Presentations

  1. Benjamin Ecker, Youzhen Li, Congcong Wang, and Yongli Gao, “Light Induced Degradation of CH3NH3PbI3 Perovskite Thin Films,” MRS 2016 Fall Meeting, Boston, Dec. 2016.
  2. Congcong Wang, Ben Ecker, Haotong Wei, Jinsong Huang, and Yongli Gao, “Degradation of CH3NH3PbBr3 Single Crystals by Water Exposure,” MRS 2016 Fall Meeting, Boston, Dec. 2016.
  3. Congcong Wang, Xiaoliang Liu, Chenggong Wang, Lu Lyu, Zhengguo Xiao, Cheng Bi, Jinsong Huang_ and Yongli Gao_“Electronic structures at the interface between Au and CH3NH3PbI3,” APS March Meeting, Baltimore, March 2016.
  4. Congcong Wang,Youzhen Li, Xuemei Xu, Chenggong Wang, Fangyan Xie_ and Yongli Gao_“Degradation of Co-Evaporated Perovskite Thin Film,” MRS 2015 Fall Meeting, Boston, Dec. 2015.
  5. Xiaoliang Liu, Chenggong Wang, Peng Liu, and Yongli Gao, “Interface Investigation of the Electronic Structure between Functional Layers in Perovskite Solar Cells,” Advanced Solar Cell Workshop II, Beijing, China, May 2015.
  6. Congcong Wang, Xiaoliang Liu, Chenggong Wang, Lu Lyu, Zhengguo Xiao, Cheng Bi, Jinsong Huang, and Yongli Gao, “Electronic structures at the interface between Au and CH3NH3PbI3,” APS March Meeting, San Antonio, March 2015.
  7. Chenggong Wang, Xiaoliang Liu, Congcong Wang, Zhengguo Xiao, Yuchuan Shao, Cheng Bi, Jinsong Huang, Yongli Gao, “Surface Analytical Investigation on Organometal Triiodide Perovskite,” APS March Meeting, San Antonio, March 2015.
  8. Runsheng Wu, Jian Xiong, Chenghao Cao, Conghua Zhou, Bingchu Yang, Yongli Gao, and Junliang Yang, “Highly Efficient Planar Heterojunction Perovskite Solar Cells Fabricated by Solvent Engineering,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  9. Haipeng Xie, LuLyu, Xiaoliang Liu, Dongmei Niu, Jinsong Huang, and Yongli Gao, “Effects of precursor ratios on electronic structure and surface composition of perovskite films,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  10. Peng Liu, Lu Lyu, Xiaoliang Liu, Dongmei Niu, Jinsong Huang, and Yongli Gao, “Interfacial Energy level alignment at MoOx/CH3NH3PbI3 Interface,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  11. Zhiyu Tan, Zhenhong Zhou, Guo Tian, Yongli Gao, and Han Huang, “Elimination of the herringbone reconstruction of Au(111) surface by self-assemblied HBB,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  12. Lei Zhang, Yingguo Yang, Han Huang, Lu Lyu, Hong Zhang, Ningtong Cao Haipeng Xie, Xingyu Gao, Dongmei Niu1, and Yongli Gao, “Thickness Dependent Air-Exposure Induced Phase Transition of CuPc Ultra-Thin Films to Well-Ordered One-Dimensional Nanocrystals on Layered-Substrates,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  13. Xiaoliang Liu, Chenggong Wang, Lu Lyu, Jinsong Huang, and Yongli Gao, “Electronic structures at the interface between Au and CH3NH3PbI3,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  14. Song Hao, Jingye Yuan, Lei Zhang, Yingbao Huang, Jun Wu, Haipeng Xie, Yongli Gao, Bingchu Yang, and Han Huang, “Investigation on the roles of weight ratio between precursors in the CVD growth of bilayered MoS2 crystals,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  15. Chuan Qian, Jia Sun, Lei Zhang, Han Huang, Junliang Yang, and Yongli Gao, “Crystal-Domain Orientation and Boundary of Organic Semiconductor Thin Film Investigated by in-situ Kelvin Probe Force Microscopy,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  16. Chuan Qian, Jia Sun, Junliang Yang, and Yongli Gao, “Flexible and low-voltage organic field-effect transistors on biodegradable cellulose paper,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  17. Junliang Yang, Jian Xiong, Qiao Hu, and Yongli Gao, “Printing Fabrication and Interface Materials for Solution-Processed Organic Photovoltaics,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  18. Hong Zhang, Lu Lyu, Peng Liu, Haipeng Xie,Yuhe Zhang, Ningtong Cao, Haipeng Xie, Mayee Dongmei Niu, and Yongli Gao, “The Investigation on Energy level Level alignment Alignment at C8-BTBT/Ni (100) on Metal Magnetic Substrates,” Int. Conf. Mol. Elec. Mater. Dev., Hong Kong, Jan. 2015.
  19. C.G. Wang, C.C. Wang, Y. Gao, Z. Xiao, C. Bi, Y. Shao, J.S. Huang, H.P. Xie, L. Lv, D.-M. Niu, X.L. Liu, and J.L. Yang, “Surface Analytical Investigation on Organometal Triiodide Perovskite,” MRS 2014 Fall Meeting, Boston, Dec. 2014.
  20. C.G. Wang, C.C. Wang, Y. Gao, Z. Xiao, C. Bi, Y. Shao, J.S. Huang, H.P. Xie, L. Lv, D.-M. Niu, X.L. Liu, and J.L. Yang, “Surface Analytical Investigation on Organometal Triiodide Perovskite,” AVS Symp., Baltimore, Nov. 2014.
  21. C.G. Wang and Y. Gao, “Electronic structure investigation of doping C60 with metal oxide,” APS March Meeting, Denver, March 2014.
  22. H. Huang, W. Wan, S.L. Wong, L. Lv, Y. Gao, and A.T.S. Wee, “Incorporating isolated molybdenum (Mo) atoms into bilayer epitaxial graphene on 4H-SiC(0001),” APS March Meeting, Denver, March 2014.
  23. Chenggong Wang, Irfan, and Yongli Gao, “Effect of air exposure of MoO3 film underneath thin organic film,” MRS 2013 Fall Meeting, Boston, Dec. 2013.
  24. H.P. Xie, D.M. Niu, and Y.L. Gao, “Effect of Annealing Temperature on LSMO Thin Film Composition and Structure,” CPS Annual, Xiamen, China, Sept. 2013.
  25. N.T. Cao, D.M. Niu, and Y.L. Gao, “ARPES Investigation on MoS2(0001) and Cs/ MoS2(0001),” CPS Annual, Xiamen, China, Sept. 2013.
  26. Lu Lyu, Mengqiu Long, and Yongli Gao, “Theoretical Investigation on the Orientation Dependent Energy Level Alignment at Organic Heterojunction Interfaces: C60/CuPc and C60/F16CuPc,” CPS Annual, Xiamen, China, Sept. 2013.
  27. W. Wan, L. Lu, W.S. Liang, Y. Gao, A.T.S. Wee, and H. Huang, “STM Investigation on Single Mo Atom Doping in Double Layer Graphene,” CPS Annual, Xiamen, China, Sept. 2013.
  28. Chenggong Wang, Irfan, and Yongli Gao, “Effect of air exposure of MoO3 film underneath thin CuPc layers,” MRS 2012 Fall Meeting, Boston, Dec. 2012.
  29. Chenggong Wang, Irfan, and Yongli Gao, “Orientation Dependent Ionization Potential of CuPc and Energy Level Alignment at C60/CuPc Interface,” APS March Meeting, Boston, March 2012.
  30. Irfan, Alexander James Turinske, Zhenan Bao, and Yongli Gao, “Work function recovery of air exposed molybdenum oxide thin films with vacuum annealing,” APS March Meeting, Boston, March 2012.
  31. Chenggong Wang, Irfan, and Yongli Gao, “Orientation Dependent Ionization Potential of CuPc and Energy Level Alignment at C60/CuPc Interface,” MRS 2011 Fall Meeting, Boston, Dec. 2011.
  32. Irfan, Sachi Graber, Franky So, and Yongli Gao, “Effect of high work function indium tin oxide (ITO) at organic semiconductor / ITO interface,” MRS 2011 Fall Meeting, Boston, Dec. 2011.
  33. Irfan, H,J. Ding, and Y. Gao, “Metal-Oxides Hole Injection Layer in Organic Semiconductor Devices,” 219th ECS Meeting, Montreal, Canada, April 2011.
  34. Irfan, H. Ding, and Yongli Gao, “Strong interface p-doping and band bending in C60,” APS March Meeting, Huston, March 2011.
  35. H. Ding, Irfan, C. Reese, A. Makinen, Z. Bao, and Y. Gao, “Angle resolved photoemission study of rubrene single crystal,” APS March Meeting, Huston, March 2011.
  36. Irfan, H. Ding, Y. Gao, M. Zhang, and C. W. Tang, “Strong interface p-doping and band bending in C60 on MoOx,” MRS 2010 Fall Meeting, Boston, Dec. 2010.
  37. H. Ding, C. Reese, A. J. Mäkinen, Z. Bao, and Y. Gao, “Angle-resolved photoemission study of rubrene single crystal,” MRS 2009 Fall Meeting, Boston, Dec. 2009.
  38. Irfan, H. Ding, and Yongli Gao, D.-Y. Kim, J. Subbiah, G. Sarasqueta, and F. So, “Energy level evolution of varying molybdenum trioxide inter-layer between conducting indium tin oxide (ITO) and chloro aluminum pthalocyanine (AlPc-Cl),” MRS 2009 Fall Meeting, Boston, Dec. 2009.
  39. Irfan, H. Ding, Y. Gao, W. Xia, H. Lin, C. W. Tang, “Nitric-phosphoric acid etching effects on the surface chemical composition of CdTe thin film,” APS March Meeting, Pittsburgh, March 2009.
  40. H. Ding, Irfan, Yongli Gao, D.-Y. Kim, and F. So, “The effect of molybdenum oxide interlayer on organic photovoltaic cells,” APS March Meeting, Pittsburgh, March 2009.
  41. H. Ding, Irfan, Y. Gao, M. Cinchetti, M. Sanchez-Albaneda, J.-P. Wüstenberg, O. Andreyev, M. Bauer, and M. Aeschlimann, “Photoemission investigation of spin dynamics in organic semiconductor,” APS March Meeting, Pittsburgh, March 2009.
  42. Y. Gao, H. Ding, H. Wang, and D. Yan, “Band Bending and Debye Screening in F16CuPc/BP2T Ambipolar Organic Thin Film Transistor,” SPIE Symposium, San Diego, Aug. 2008.
  43. K. Park, H. Ding, F. So, and Y. Gao, “Mechanism of LiF interlayer for electron injection,” SPIE Symposium, San Diego, Aug. 2008.
  44. H. Ding, Y. Gao, M. Cinchetti, J.-P. Wustenberg, M. Sanchez-Albaneda, O. Andreyev, M. Bauer, and M. Aeschlimann, "Spin- and Time-Resolved Two Photon Photoemission Study of Spin Injection fromInorganic to Organic Semiconductor," MRS-IMRC, Chongqing, June, 2008.
  45. H. Ding, K.W. Park, and Y. Gao, “Modification of the Electronic Structure of Organic Semiconductor by Alkali Metal,” MRS-IMRC, Chongqing, June, 2008.
  46. H. Ding, Y. Gao, M. Cinchetti, J.-P. Wustenberg, M. Sanchez-Albaneda, O. Andreyev, M. Bauer, and M. Aeschlimann, “Spin Injection and Spin Dynamics at the CuPc/GaAs Interface,” Intermag, Madrid, May 2008.
  47. K.W. Park, H.J. Ding, Y. Gao, and F. So, “Electronic Structure of LiF-doped Alq,” APS March Meeting, New Orleans, March 2008.
  48. H. Ding, K.W. Park, and Y. Gao, “Unoccupied State Evolution in Cs-Doped Copper Phthalocyanine,” APS March Meeting, New Orleans, March 2008.
  49. Y. Gao, H. Ding, H. Wang, and D. Yan, “Electronic Structure of Interfaces and Heterojunction Ambipolar Organic Thin Film Transistor,” APS March Meeting, New Orleans, March 2008.
  50. H. Ding, K.W. Park, and Y. Gao, “Unoccupied State Evolution in Cs-Doped Copper Phthalocyanine,” MRS 2007 Fall Meeting, Boston, Dec. 2007.
  51. H. Ding and Y. Gao, “Energy level alignment at the rubrene/metal interface,” MRS 2007 Fall Meeting, Boston, Dec. 2007.
  52. H. Ding and Y. Gao, “Gold/LiF/tris-(8-hydroxyquinoline) aluminum interfaces,” ECS 212th Meeting, Washington DC, Sept. 2007.
  53. H. Ding and Y. Gao, “Modification on the Electronic Structure of Organic Semiconductors by Alkali Metal,” ECS 212th Meeting, Washington DC, Sept. 2007.
  54. Y. Gao, H. Ding, H. Wang, and D. Yan, “Electronic structure of interfaces between hexadecafluoro-phthalocyanine and 2,5-bis(4-biphenylyl) bithiophene,” ECS 212th Meeting, Washington DC, Sept. 2007.
  55. Andreyev, M. Cinchettir, M. Aeschlimann, H. Ding, and Y. Gao, “Spin- and Time-Resolved Two Photon Photoemission Study of Spin Injection from Inorganic to Organic Semiconductor,” SpinOS07, Bologna, Italy, Sept. 2007.
  56. H. Ding and Y. Gao, O. Andreyev, J. Wüstenberg, M. Bauer, and M. Aeschlimann, “Spin Injection from GaAs to CuPc,” American Physical Society, Denver, March 2007.
  57. H. Ding, S. Zorba, and Y. Gao, “Photoemission study of tris(8-hydroxyquinoline) aluminum/aluminum oxide/tris(8-hydroxyquinoline) aluminum interface,” American Physical Society, Denver, March 2007.
  58. H. Ding and Y. Gao, O. Andreyev, J. Wüstenberg, M. Bauer, and M. Aeschlimann, “Spin Injection from GaAs to CuPc,” MRS 2006 Fall Meeting, Boston, December 2006.
  59. Andreyev, J. Wüstenberg, M. Bauer, M. Aeschlimann, H. Ding and Y. Gao, “Loss-Free Spin Injection into Organic Semiconductor CuPc,” The 6th International Conference on Electroluminescence of Molecular Materials and Related Phenomena, Hong Kong, Aug. 2006.
  60. Andreyev, J. Wüstenberg, M. Bauer, M. Aeschlimann, H. Ding and Y. Gao, “Loss-Free Spin Injection into Organic Semiconductor CuPc,” American Physical Society, Baltimore, March 2006.
  61. H. Ding and Y. Gao, “Alkali Metal Doping and Energy Level Shift in Organic Semiconductor Surfaces,” American Physical Society, Baltimore, March 2006.
  62. H. Ding and Y. Gao, “Alkali Metal Doping and Energy Level Shift in Organic Semiconductors,” MRS 2005 Fall Meeting, Boston, December 2005.
  63. H. Ding, Y. Gao, O. Andreyev, and M. Aeschlimann, “Spin Injection Through a Co/CuPc Interface,” MRS 2005 Fall Meeting, Boston, December 2005.
  64. Andreyev, Y. Gao, and M. Aeschlimann, “Loss-Free Spin Injection through a Co/CuPc Interface,” 8th European Conference on Molecular Electronics, Bologna, Italy, June 2005.
  65. H. Ding and Y. Gao, “Reversal of Doping Induced Energy Level Shift in Organic Semiconductors,” International Conference of Materials for Advanced Technology, Singapore, July 2005.
  66. S. Zorba and Y. Gao, “Fractal-Mound Growth of Pentacene Thin Films: A Novel Morpholog,” American Physical Society, Los Angelos, March 2005.
  67. H. Ding and Y. Gao, “Doping in Alq,” SOMR-05, Rochester, March 2005.
  68. S. Zorba and Y. Gao, “Growth Kinetics of Ordered Pentacene Thin Films,” International Conference on Science and Technology of Synthetic Metals, Wollongong, July 2004.
  69. N.J. Watkins and Y. Gao, “Energy Level Alignment of Pentacene and Dielectric Materials,” International Conference on Science and Technology of Synthetic Metals, Wollongong, July 2004.
  70. L. Yan, N.J. Watkins, S. Zorba, and Y. Gao, “Metal-Organic Interface Dipole and Thermodynamic Equilibrium,” International Conference on Science and Technology of Synthetic Metals, Wollongong, July 2004.
  71. Y. Gao and L. Yan, “Energy Level Shift in CuPc,” International Conference on Science and Technology of Synthetic Metals, Wollongong, July 2004.
  72. S. Zorba and Y. Gao, “Feasibility of Static Induction Transistor with Organic Semiconductors,” Symposium on Semiconductor Devices, South Bend, June 2004.
  73. S. Zorba and Y. Gao, “Fractal-Mound Growth of Pentacene Thin Films: A Novel Morphology,” 6th International Symposium on Functional _-Electron Systems, Ithaca, June 2004.
  74. L. Yan, N.J. Watkins, S. Zorba, and Y. Gao, “Metal-Organic Interface Dipole and Thermodynamic Equilibrium,” 6th International Symposium on Functional _-Electron Systems, Ithaca, June 2004.
  75. L. Yan and Y. Gao, “Metal-Organic Interface Dipole and Charge Transfer,” American Physical Society, Montreal, March 2004.
  76. S. Zorba and Y. Gao, “Feasibility of Static Induction Transistor with Organic Semiconductors,” American Physical Society, Montreal, March 2004.
  77. S. Zorba and Y. Gao, “Fractal-Mound Growth of Pentacene Thin Films: A Novel Morphology,” American Physical Society, Montreal, March 2004.
  78. N. J. Watkins, A. J. Mäkinen, Y. Gao, M. Uchida, and Z. H. Kafafi, “Direct observation of the evolution of both the HOMO and LUMO energy levels of a silole derivative at magnesium silole interface,” SPIE’s 48th Annual Meeting, San Diego, July 2003.
  79. Serkan Zorba, Li Yan, Neil J. Watkins, Yongli Gao, “Evolution of the Growth Front of Perylene Thin Films on Glass and Au Substrates” MRS 2002 Fall Meeting, Boston, December 2002.
  80. N. J. Watkins, Li Yan, S. Zorba, and Yongli Gao, “Dielectric Interface Formation in Organic Semiconductor Based Electronics,” MRS 2002 Fall Meeting, Boston, December 2002.
  81. N. J. Watkins, Li Yan, S. Zorba, and Yongli Gao, “Photoemission spectroscopy study of the interface formation in organic thin film transistors,” SPIE’s 47th Annual Meeting, Seattle, July 2002.
  82. N. J. Watkins, Li Yan, S. Zorba, Yongli Gao, and C. W. Tang, “Evidence of Electron and Hole Transfer in Metal/CuPc Interfaces,” SPIE’s 47th Annual Meeting, Seattle, July 2002.
  83. Serkan Zorba, Li Yan, Neil J. Watkins, and Yongli Gao, “Growth Front Kinetics of Perylene on Glass and Au Substrates,” SPIE’s 47th Annual Meeting, Seattle, July 2002.
  84. Li Yan, N. J. Watkins, C. W. Tang, and Yongli Gao, “Fermi Level Pinning in Cs Doped CuPc,” International Conference on Science and Technology of Synthetic Metals, Shanghai, July 2002.
  85. Li Yan, N. J. Watkins, C. W. Tang, and Yongli Gao, “Direct observation of Fermi level pinning and charge transfer in metal/CuPc interfaces,” American Physical Society, Indianapolis, March 2002.
  86. N. J. Watkins, Li Yan, S. Zorba, and Yongli Gao, “A Photoemission Spectroscopic Study of the Interface Formation in Organic Thin Film Transistor,” American Physical Society, Indianapolis, March 2002.
  87. Serkan Zorba, Li Yan, Neil J. Watkins, Yongli Gao, “Unstable Growth of Perylene on Glass and Au Substrates,” American Physical Society, Indianapolis, March 2002.
  88. S. Zorba, L. Yan, N.J. Watkins, and Yongli Gao, "Kinetic Roughening Study of Perylene on Glass and Au Substrates," MRS 2001 Fall Meeting, Boston, December 2001.
  89. N. J. Watkins, Li Yan, S. Zorba, and Yongli Gao, "A Photoemission and Inverse Photoemission Spectroscopic Study of Interface Formation in Organic Thin Film Transistors," MRS 2001 Fall Meeting, Boston, December 2001.
  90. S. Zorba, Quoc Toan Le, N.J. Watkins, L. Yan, and Yongli Gao, "Surface Growth Study of Pentacene and Perylene," 48th AVS International Symposium, San Francisco, October 2001.
  91. N. J. Watkins, Li Yan, and Yongli Gao, "Interface Formation in Organic Thin Film Transistors: A Photoemission Spectroscopy Study," 48th AVS International Symposium, San Francisco, October 2001.
  92. Li Yan, C. W. Tang and Yongli Gao, "Direct Observation of Fermi Level Pinning in Alkali Metal Doped Organic Film," 48th AVS International Symposium, San Francisco, October 2001.
  93. S. Zorba, Quoc Toan Le, and Yongli Gao, "Achieving Atomic and Molecular Resolution in Air Using Scanning Probe Microscopy," SOMR-01, Rochester, November 2001.
  94. N. J. Watkins, Li Yan, S Zorba, and Yongli Gao, "Contacts in Organic Thin Film Transistors," SOMR-01, Rochester, November 2001.
  95. Li Yan, M. G. Mason, C.W. Tang, and Yongli Gao, "Photoemission and Inverse Photoemission Investigation of Organic Material and Metal/Organic Interfaces in OLED Devices," American Physical Society, San Francisco, March 2001.
  96. Serkan Zorba, Q. Toan Le, Neil J. Watkins, Li Yan, and Yongli Gao, "Current-Voltage Measurements as a Function of Applied Tip Force on Pentacene by Conducting Probe Microscopy," MRS 2000 Fall Meeting, Boston, December 2000.
  97. N.J. Watkins ,Quoc Toan Le, S. Zorba, Li Yan, and Yongli Gao, "Interface Formation in Pentacene Based Thin Film Transistors: an Electronic and Morphological Study," MRS 2000 Fall Meeting, Boston, December 2000.
  98. Li Yan, Yongli Gao, M. G. Mason, and C.W. Tang, "Energy Level Alignment at Metal/Alq3 Interfaces Investigated by Photoemission Methods," MRS 2000 Fall Meeting, Boston, December 2000.
  99. Li Yan, Yongli Gao, M. G. Mason, and C.W. Tang, "Photoemission and Inverse Photoemission Investigation of CuPc and Metal/CuPc Interfaces," MRS 2000 Fall Meeting, Boston, December 2000.
  100. Serkan Zorba, Q. Toan Le, Neil J. Watkins, Li Yan, and Yongli Gao, "Growth Modes of Vacuum Evaporated Pentacene on SiO2, MoS2 and Au Substrates," SOMR-00 Symposium on Materials Research, Rochester, October 2000.
  101. N.J. Watkins, S. Zorba, Li Yan, and Yongli Gao, "Interface Characterization of Pentacene/Gold and Pentacene/Silver," SOMR-00 Symposium on Materials Research, Rochester, October 2000.
  102. Q.T. Le, S. Zorba, E.F. Forsythe, L. Yan, N.J. Watkins, Y. Gao, S.F. Nelson, C.S. Kuo, and T.N. Jackson, "Characterization of Gold/Pentacene and Pentacene/Gold Interfaces," 47th AVS International Symposium, Boston, October 2000.
  103. Li Yan, Yongli Gao, M. G. Mason, and C.W. Tang, "Photoemission Investigation of Metal/CuPc interfaces," 47th AVS International Symposium, Boston, October 2000.
  104. Serkan Zorba, Q. Toan Le, Neil J. Watkins, Li Yan, and Yongli Gao, "Growth Modes of Vacuum Evaporated Pentacene on SiO2, MoS2 and Au Substrates," 47th AVS International Symposium, Boston, October 2000.
  105. M. G. Mason, C.W. Tang, Li Yan, and Yongli Gao, "Photoemission Iinvestigation of Energy Level Alignment and Chemistry in Al/CsF/Alq3 Interfaces," 47th AVS International Symposium, Boston, October 2000.
  106. Li Yan, Yongli Gao, M. G. Mason, and C.W. Tang, "Photoemission Study of Energy Level Alignment at the Metal/Alq3 Interfaces," 10th International Conference on Solid Films and Surfaces, Princeton, July 2000.
  107. Li Yan, Yongli Gao, M. G. Mason, and C.W. Tang, "Photoemission Characterization of Al/Alq3 and Al/LiF/Alq3 Interfaces," American Physical Society, Seattle, March 2000.
  108. Q.T. Le, Li Yan, and Yongli Gao, "Photoemission and Microscopy Study of Pentacene/Au and Pentacene/Silicon Oxide," MRS 1999 Fall Meeting, Boston, December 1999.
  109. N.J. Watkins, Yongli Gao, and G.W. Wicks, "Evolution of the Electronic Structure of GaN during Oxidation," MRS 1999 Fall Meeting, Boston, December 1999.
  110. Y. Gao, T. Miyamae, H. Mekaru, and T. Urisu, "Scanning Tunneling Microscopy Study of Surface Morphology of Si(111) after Synchrotron Radiation Stimulated Desorption of SiO2," 46th AVS International Symposium, Seattle, October 1999.
  111. A.J. Makinen, S. Schoemann, Y. Gao, M.G. Mason, A.A. Muenter, and A.R. Melnyk, "Femtosecond Charge Transfer Processes in Organic Molecular Heterostructures," 46th AVS International Symposium, Seattle, October 1999.
  112. Q.T. Le, F. Nuesch, E.W. Forsythe, L.J. Rothberg, Li Yan, and Yongli Gao, "A Photoelectron Study of Chemically Treated Indium-Tin-Oxide Surface and Its Reactivity with Phenyl Diamine," 46th AVS International Symposium, Seattle, October 1999.
  113. L. Yan, Q.T. Le, Y. Gao, M.G. Mason, and C.W. Tang, "Photoemission Characterization of Al/Alq3 and Al/LiF/Alq3 Interfaces," 46th AVS International Symposium, Seattle, October 1999.
  114. E.W. Forsythe, Q.T. Le, Y. Gao, L. Rothberg, and M.A. Abkowitz, “Growth Modes of Naphthyl-Substituted Benzidine Derivative on Standard and Ultra-Flat Induim Tin Oxide,” 46th AVS International Symposium, Seattle, October 1999.
  115. E.W. Forsythe, M.A. Abkowitz, and Yongli Gao, “The Influence of Copper Phthalocynanine on the Charge Injection and Growth Modes for Organic Light Emitting Diodes”, 46th AVS International Symposium, Seattle, October 1999.
  116. L. Yan, Q.T. Le, Y. Gao, M.G. Mason, and C.W. Tang, "Photoemission Investigation of Al/Alq3 and Al/LiF/Alq3 Interfaces," SOMR-99 Symposium on Materials Research, Rochester, October 1999.
  117. Q.T. Le, E.W. Forsythe, F. Nuesch, L.J. Rothberg, Li Yan, and Yongli Gao, "In Situ Photoelectron Spectroscopy Study of Phenyl Diamine Treated Indium-Tin-Oxide Interface," SOMR-99 Symposium on Materials Research, Rochester, October 1999.
  118. A.J. Makinen, S. Schoemann, Y. Gao, M.G. Mason, A.A. Muenter, D.A. Mantell, A.R. Melnyk, and R.L. Headrick, "Femtosecond Excited State Dynamics in Organic Molecular Films," 10th Ann. Symp. Photoinduced Charge Transfer, Rochester, July 1999.
  119. E.W. Forsythe, M. Abkowitz, C.W. Tang, and Yongli Gao, "Growth Modes and Hole Injection Characteristics of Organic Films on Induim Tin Oxide," 10th Ann. Symp. Photoinduced Charge Transfer, Rochester, July 1999.
  120. Y. Gao, H. Mekaru, T. Urisu, and T. Miyamae, "Comparative Study of Si(111) Surface after Thermal or Synchrotron Radiation Cleaning Using Scanning Tunneling Microscopy," Japanese Applied Physics Annual Meeting, Japan, July 1999.
  121. Y. Gao, H. Mekaru, T. Urisu, and T. Miyamae, "Scanning Tunneling Microscopy Study of Synchrotron Radiation Desorption of SiO2 from Si(111)," Japanese Applied Physics Annual Meeting, Japan, July 1999.
  122. F.A. Nuesch, Q.T. Le, E.W. Forsythe, Yongli Gao, and L.J. Rothberg, "Tuning of the Indium Tin Oxide Workfunction by Chemical Surface Modification Using Acids and Bases and its Application in Organic Light Emitting Diodes," American Physical Society Centeniel, Atlanta, March 1999.
  123. Li Yan, Q.T. Le, Yongli Gao, M.G. Mason, and C.W. Tang, "Photoemission Investigation of Al/Inq and Al/LiF/Inq Interfaces," American Physical Society Centeniel, Atlanta, March 1999.
  124. A.J. Makinen, S. Schoemann, Y. Gao, A.R. Melnyk, D.A. Mantell, M.G. Mason, and A.A. Muenter, "Ultrafast Charge Transfer Reactions in Organic Photoreceptor Structures," American Physical Society Centeniel, Atlanta, March 1999.
  125. R.L. Headrick, A.J. Makinen, A.R. Melnyk, S. Schoemann, and Y. Gao, "High Intensity X-Ray Diffraction Study of Vacuum Evaporated Thin Films of N,N'-bis(2-phenethyl) perylene-3,4:9,10-bis(dicarboximide)," American Physical Society Centeniel, Atlanta, March 1999.
  126. S. Schoemann, A.J. Makinen, Y. Gao, M.G. Mason, and A.A. Muenter, "Band Bending Effects on the Picosecond Timescale for GaAs(110) Surfaces," American Physical Society Centeniel, Atlanta, March 1999.
  127. N.J. Watkins, G.W. Wicks, and Yongli Gao, "Study of GaN Oxidation by X-ray Photoemission Spectroscopy", American Physical Society Centeniel, Atlanta, March 1999.
  128. E.W. Forsythe, T.Q. Le, L. Yan, D.C. Morton, C.W. Tang, and Yongli Gao, “Interfaces in Organic Light Emtting Diodes,” DARPA Information Exchange Conf., Washington D.C., March 1999.
  129. E.W. Forsythe, D.C. Morton, T.Q. Le, C.W. Tang, and Yongli Gao, "Energy Level Alignment and Trap States in Doped Tris-8-(hydroxyquinoline) Using Thermally Stimulated Luminescence," SPIE Conf., San Jose, January 1999.
  130. Quoc Toan Le, M. G. Mason, Li Yan, V.-E. Choong, E. W. Forsythe, C. W. Tang, and Yongli Gao, "Interface Formation between Al and Ca with Tis-(8-hydroxyquinoline) Aluminum," SPIE Conf., San Jose, January 1999.
  131. E.W. Forsythe, Yongli Gao, C.W. Tang, and D.C. Morton, “Trap States in Trs-8-(hydorxyquinoline) Aluminum as a Function of Doping Using Thermally Stimulated Luminescence,” MRS 1998 Fall Meeting, Boston, December 1998.
  132. Q.T. Le, F. M. Avendano, E. W. Forsythe, L. Yan, Y. Gao, and C.W. Tang, "Stability Mechanism of Tris-(8-hydroxyquinoline) Aluminium Based Light-Emitting Devices: XPS and AFM Study," MRS 1998 Fall Meeting, Boston, December 1998.
  133. F.M. Avendano, E.W. Forsythe, and Y. Gao, "The Growth Mode of Phenyldiamine (NPB) on Indium Tin Oxide for Light Emitting Device Applications," MRS 1998 Fall Meeting, Boston, December 1998.
  134. A.J. Makinen, S. Schoemann, A.R. Melnyk, D.A. Mantell, M.G. Mason, A.A. Muenter, and Y. Gao, "Excited State Dynamics in Organic Bilayer Structures Probed by Femtosecond Time-Resolved Photoemission Spectroscopy," MRS 1998 Fall Meeting, Boston, December 1998.
  135. N. Watkins, G. Wicks, and Y. Gao, "X-ray Photoemission Spectroscopy Study of Oxidation of GaN," MRS 1998 Fall Meeting, Boston, December 1998.
  136. E.W. Forsythe, Y. Gao, G.S. Tompa, L.G. Provost, and J. Doyle, “Photoemission Spectroscopy Analysis of ZnO Films for Display Applications,” 45th AVS International Symposium, Baltimore, November 1998.
  137. F.A. Nuesch, E.W. Forsythe, and Y. Gao, "Ultraviolet and X-ray Photoemission Spectroscopy Characterization of Base and Acid Treaded Indium Tin Oxide for Organic Device Applications," 45th AVS International Symposium, Baltimore, November 1998.
  138. F.M. Avendano, E.W. Forsythe, Y. Gao, and C.W. Tang, "Investigation of the Growth Mode of Phenyldiamine (NPB) on Indium Tin Oxide," 45th AVS International Symposium, Baltimore, November 1998.
  139. Q.T. Le, F. M. Avendano, E. W. Forsythe, L. Yan, Y. Gao, and C.W. Tang, "XPS and AFM Investigation of Stability Mechanism of Tris-(8-hydroxyquinoline) Aluminium Based Light-Emitting Devices," 45th AVS International Symposium, Baltimore, November 1998.
  140. E.W. Forsythe, V.-E. Choong, C.W. Tang, and Y. Gao, “Interface Analysis of Nathyl-substituted Benzidine Derivative and Tris-(8-hydroxy quinoline) Aluminum Using Ultraviolet and X-Ray Photoemission Spectroscopy,” 45th AVS International Symposium, Baltimore, November 1998.
  141. A.J. Makinen, S. Xu, S. Diol, A.R. Melnyk, D.A. Mantell, M.G. Mason, A.A. Muenter, and Y. Gao, "Morphology and Relaxation Dynamics in Thin Organic Films Probed by Femtosecond Time-Resolved Photoemission Spectroscopy," 45th AVS International Symposium, Baltimore, November 1998.
  142. L. Yan, Q.T. Le, Y. Gao, M.G. Mason, and C.W. Tang, "Investigation of Al/Inq3 using UPS and XPS," SOMR-98 Symposium on Materials Research, Rochester, October 1998.
  143. A. Makinen, S. Schoemann, A. Melnyk, and Y. Gao, "The Effect of Morphology on Relaxation Dynamics in Thin Organic Films Probed by Femtosecond Photoemission Spectroscopy," SOMR-98 Symposium on Materials Research, Rochester, October 1998.
  144. F. Avendano, E.W. Forsythe, and Y. Gao, "Investigations of the Multilayer Structure in Organic Light Emitting Devices," SOMR-98 Symposium on Materials Research, Rochester, October 1998.
  145. N. Watkins, G. Wicks, and Y. Gao, "X-ray Photoemission Spectroscopy Study of Oxidation of GaN," SOMR-98 Symposium on Materials Research, Rochester, October 1998.
  146. E.W. Forsythe, Q.T. Le, V.-E. Choong, Y. Gao, and C.W. Tang, “Interface Analysis of Nathyl-substituted Benzidine Derivative and Tris-(8-hydroxy quinoline) Aluminum Using UV and X-ray Photoemission Spectroscopy,” 9th International Workshop on Inorganic and Organic Electroluminescence, Bend, Oregon, September 1998.
  147. Quoc Toan Le, F.M. Avendano, E.W. Forsythe, Y. Gao, and C.W. Tang, “Degradation of Tris-(8-hydroxy quinoline) Aluminum-based LEDs,” 9th International Workshop on Inorganic and Organic Electroluminescence, Bend, Oregon, September 1998.
  148. Quoc Toan Le, V.-E. Choong, M.G. Mason, C.W. Tang, and Yongli Gao, “Photoemission Study of Interfaces in OLED,” International Conference on Science and Technology of Synthetic Metals, Montpellier, France, July 1998.
  149. F.M. Avendano, E.W. Forsythe, and Yongli Gao, “Scanning Probe Analysis of Surfaces in OLED,” International Conference on Science and Technology of Synthetic Metals, Montpellier, France, July 1998.
  150. S. Xu, S.J. Diol, A. Makinen, L. Rothberg, Yongli Gao, M.G. Mason, A.A. Muenter, D.A. Mantell, and R.J.D. Miller, “Super-Radiant Decay, in Two-Dimensional Layered Semiconductors,” Conference on Ultrafast Phenomena, Germany, July 1998.
  151. Li Yan, E.W. Forsythe, Quoc Toan Le, Yongli Gao, H. Murata and Z.H. Kafafi, “Photoemission Characterization of Undoped and Rubrene-doped Tris-(8-hydroxyquinoline) Aluminium,” American Vacuum Society, Up-State New York Symposium, Buffalo, New York, May 1998.
  152. F.M. Avendano, T.Q. Le, C.W. Tang, and Yongli Gao, “Lateral Force Microscopy and X-ray Photoemission Spectroscopy Characterization of Tris-(8-hydroxyquinoline) Aluminum Based Light-Emitting Diodes”, American Vacuum Society, Up-State New York Symposium, Buffalo, New York, May 1998.
  153. Q.T. Le, E.W. Forsythe, Yongli Gao, R. Pairleitner, and G. Leising, “Characterization of metal/m-LPPP Interfaces with Photoemission Technique”, American Vacuum Society, Up-State New York Symposium, Buffalo, New York, May 1998.
  154. Y. Gao, "Interface Charge Transfer and Electrochemistry in Organic Light Emitting Diodes," DARPA Information Exchange Conf., Washington D.C., March 1998.
  155. E.W. Forsythe, V.-E. Choong, C.W. Tang, and Yongli Gao, “Interface Analysis of NPB and Alq Using Ultraviolet and x-ray Photoemission Spectroscopy,” American Physical Society, Los Angelos, March 1998.
  156. Z. Zhang, W. Zeng, S. Xu, A. Makinen, G. Wicks, and Y. Gao, “Femtosecond Studies of Carrier Dynamics in GaN,” American Physical Society, Los Angelos, March 1998.
  157. E.W. Forsythe, D.C. Morton, Yongli Gao, and C.W. Tang, “Trap States of Naphthyl-Substituted Benzidine Derivative and Trs-8-(hydorxyquinoline) Aluminum with Doping Using Thermally Stimulated Luminescence,” American Physical Society, Los Angelos, March 1998.
  158. F.M. Avendano, E.W. Forsythe, and Yongli Gao, “Atomic Force Microscopy Anaylsis of Indium Tin Oxide Surface For Organic Light Emitting Diodes,” American Physical Society, Los Angelos, March 1998.
  159. E.W. Forsythe, B.R. Hsieh, Y.Yu, S.J. Konezny, P. Roche, J. Casperson, and Yongli Gao, “Coumarin 6 Doped DP6-PPV Light Emitting Diodes,” American Physical Society, Los Angelos, March 1998.
  160. E.W. Forsythe, D.C. Morton, C.W. Tang, and Y. Gao, "Trap States of Tris-8-(hydroxyquinoline) Aluminum and Naphthyl-Substituted Benzidine Derivative Using Thermally Stimulated Luminescence," Materials Research Society, Boston, December 1997.
  161. V.-E. Choong, Y. Gao, G. Mason, and C.W. Tang, "Investigation of interface formation Between Calcium and 8-hydroxyquinoline Aluminum," Materials Research Society, Boston, December 1997.
  162. V.-E. Choong, Y. Park, N.R. Shivaparan, and Y. Gao, C.W. Tang, 'Deposition induced quenching of tris-8-hydroxyquinoline aluminum," Materials Research Society, Boston, December 1997.
  163. A.J. Makinen, S. Xu, S. Diol, A.R. Melnyk, D.A. Mantell, Y. Gao, G.M. Mason, and A.A. Muenter, "Ultrafast Tow-Photon Photoemission Study of Diimide Perylene," Gordon Conference, Proctor, July 1997.
  164. S. Xu, P. Zhang, S. Diol, A. Makinen, D. A. Mantell, A. A. Muenter, G. M. Mason, R. J. D. Miller, L. Rothberg, and Y. Gao, "Abnormal Ultrafast Electron Dynamics In Two Dimensional Layered Systems," Gordon Conference, Proctor, July 1997.
  165. V.-E. Choong, Y. Park, and Y. Gao, M.G. Mason, and C.W. Tang, "Photoluminesence Quenching of Alq3 by Metal Deposition: A Surface Analytical Investigation," 44th American Vacuum Society Symposium, San Jose, October 1997.
  166. V.-E. Choong, Y. Park, B. R. Hsieh, and Y. Gao, "Photoemission Spectroscopy Analysis and Organic Light Emitting Materials," 44th American Vacuum Society Symposium, San Jose, October 1997.
  167. E. Forsythe, V. Choong, B.R. Hsieh, C.W. Tang, and Y. Gao, "Quenching and Reviving of Organic Light Emitting Materials by Metals," DARPA Information Exchange Conf., Washington D.C., March 1997.
  168. A.J. Makinen, S. Xu, S. Diol, A.R. Melnyk, D.A. Mantell, Y. Gao, G.M. Mason, and A.A. Muenter, "Ultrafast Tow-Photon Photoemission Study of Perylene Bisimide Pigments," American Physical Society, Kansas City, March 1997.
  169. S. Diol, S. Xu, A.J. Makinen, Y. Gao, and R.J.D. Miller, "Femtosecond and Picosecond Hot Electron Dynamics at GaAs(100) Surfaces," American Physical Society, Kansas City, March 1997.
  170. S. Xu, S. Diol, A.J. Makinen, D.A. Mantell, A.A. Muenter, G.M. Mason, B.A. Parkinson, R.J.D. Miller, and Y. Gao, "Femtosecond Two-Photon Photoemission Study of Layered Semiconductor SnS2 at Room- and Low-Temperature," American Physical Society, Kansas City, March 1997.
  171. V. Choong, Y. Park, Y. Gao, B.R. Hsieh, and C.W. Tang, "Revival of Ca Induced Photoluminescence Quenching of a Phenylene Vinylene Oligomer via Ca Oxidation," American Physical Society, Kansas City, March 1997.
  172. V. Choong, Y. Park, Y. Gao, B.R. Hsieh, and C.W. Tang, "Metal Induced Luminescence Quenching in Organic Light Emitting Materials," American Physical Society, Kansas City, March 1997.
  173. Y. Park, V. Choong, and Y. Gao, B.R. Hsieh, C.W. Tang, T. Wehrmeister, and K. Müllen, "Recovery of Molecular Photoluminescence by Oxidation of Metal Overlayer," Materials Research Society, Boston, December 1996.
  174. H. Razafitrimo, B.R. Hsieh, and Y. Gao, "Investigating the Surface Structure of Conjugated Polymer Layers by Scanning Tunneling Microscopy," 43rd American Vacuum Society Symposium, Philadelphia, October 1996.
  175. S.J. Diol, C.C. Miller, Y. Gao, R.J.D. Miller, "Hot Electron Dynamics at GaAs(100) Surface," 43rd American Vacuum Society Symposium, Philadelphia, October 1996.
  176. S. Xu, C.C. Miller, D.A. Mantell, R.J.D. Miller, and Y. Gao, "Time-Resolved Photoemission Spectroscopy Studies of Layered Compounds," 43rd American Vacuum Society Symposium, Philadelphia, October 1996.
  177. Y. Park, V. Choong, B.R. Hsieh, C.W. Tang, T. Wehrmeister, K. Mullen, and Y. Gao, "Electron Spectroscopy Studies of Interface Formation Between Metal Electrodes and Luminescent Organic Materials," 43rd American Vacuum Society Symposium, Philadelphia, October 1996.
  178. V. Choong, Y. Park, B.R. Hsieh, C.W. Tang, T. Wehrmeister, K. Mullen, and Y. Gao, "Effects of Metals on Luminescence of Organic Materials," 43rd American Vacuum Society Symposium, Philadelphia, October 1996.
  179. S. Xu, J. Cao, C.C. Miller, A.A. Muenter, D.A. Mantell, R.J.D. Miller, and Y. Gao, "Direct Time-Domain Measurement of Electron Relaxation in Layered Materials," American Physical Society, St. Louis, March 1996.
  180. J. Cao, R.J.D. Miller, Y. Gao, H. Elsayed-Ali, and D.A. Mantell, "Femtosecond Photoemission Study of Electron Dynamics on Copper Surfaces," American Physical Society, St. Louis, March 1996.
  181. V. Choong, J. J. Vitale, H. Razafitrimo, Y. Gao, C. W. Tang, and B. R. Hsieh, "Effects of Conversion Temperature and Time on Photoluminescence spectra of Poly(2,3-diphenyl-1,4-phenylenevinylene) (DP-PPV)," American Physical Society, St. Louis, March 1996.
  182. H. Razafitrimo, E. Ettedgui, L.H. Guo, G.L. McLendon, and Y. Gao, "X-ray Photoemission Study of The Interface Formation between Calcium and Self-Assembled Alkanethiol Monolayer," American Physical Society, St. Louis, March 1996.
  183. H. Razafitrimo, Y. Gao, and B.R. Hsieh, "Imaging conjugated polymers layers by scanning tunneling microscopy (STM)," American Physical Society, St. Louis, March 1996.
  184. X.L. Chen, X. Zhang, S.A. Jenekhe, V. Choong, and Y. Gao, "Electroluminescence of n-Type Conjugated Polymers and Copolymers," Materials Research Society, Boston, December 1995.
  185. Y. Park, E. Ettedgui, Y. Gao, and B.R. Hsieh, "Interface Formation Processes between Ca and a Phenylene Vinylene Oligomer," Materials Research Society, Boston, December 1995.
  186. C.C. Miller, J. Cao, R.J.D. Miller, and Y. Gao, "Reverse Surface Photovoltage Effects in GaAs Surface Quantum Wells," Materials Research Society, Boston, December 1995.
  187. S. Diol, C.C. Miller, Y. Gao, and R.J.D. Miller, "Photogenerated Hot Electron Dynamics at GaAs(100) Surfaces," Materials Research Society, Boston, December 1995.
  188. V. Choong, Y. Park, Y. Gao, and B.R. Hsieh, "Molecular Quantum Mechanical Calculations of the Interface Formation between Al, Ca and Mg with Poly(Phenylene Vinylene) (PPV) Oligomers," Materials Research Society, Boston, December 1995.
  189. S. Xu, J. Cao, C.C. Miller, D.A. Mantell, R.J.D. Miller, and Y. Gao, "Direct Time Domain Measurement of Electron Relacation in a Layered Electron Gas," Materials Research Society, Boston, December 1995.
  190. J. Cao, Y. Gao, R.J.D. Miller, H. Elsayed-Ali, and D.A. Mantell, "Direct Time Domain Measurement of Ultrafast Electron Relacation at Copper Surfaces by Novel Time-Resolved Photoemission Spectroscopy," Materials Research Society, Boston, December 1995.
  191. E. Ettedgui, H. Razafitrimo, Y. Gao, B.R. Hsieh, and M.W. Ruckman, "Schottky Barrier Formation at the Ca/Poly(p-Phenylene Vinylene) Interface and its Role in Tunneling at the Interface," Materials Research Society, Boston, December 1995.
  192. Y. Park, E. Ettedgui, Y. Gao, and B.R. Hsieh, "Interface Formation Processes between Ca and a Phenylene Vinylene Oligomer," Northeast Regional Meeting, American Chemical Society, Rochester, October 1995.
  193. E. Ettedgui, H. Razafitrimo, Y. Gao, and B.R. Hsieh, "Charge Transfer at the Interface of Metal and Poly(p-Phenylene Vinylene) and its Derivatives Studied Using Near Edge X-ray Absorption Fine Structure Spectroscopy," Northeast Regional Meeting, American Chemical Society, Rochester, October 1995.
  194. H. Razafitrimo, E. Ettedgui, Y. Gao, and B.R. Hsieh, "Scanning Tunneling Microscopy Study of Poly(2,3-Diphenyl Phenylene Vinylene)," Northeast Regional Meeting, American Chemical Society, Rochester, October 1995.
  195. V. Choong, Y. Park, Y. Gao, and B.R. Hsieh, "Molecular Quantum Mechanical Calculations of the Interface Formation between Al, Ca and Mg with Poly(Phenylene Vinylene) (PPV) Oligomers," Northeast Regional Meeting, American Chemical Society, Rochester, October 1995.
  196. C.A. Schmuttenmaer, C.C. Miller, J. Cao, J.W. Herman, D.A. Mantell, Y. Gao, and R.J.D. Miller, "Femtosecond Time-Resolved Photoemission Study of Hot Electron Relaxation at the GaAs(100) Surface," Northeast Regional Meeting, American Chemical Society, Rochester, October 1995.
  197. S. Diol, C.C. Miller, J. Cao, Y. Gao, and R.J.D. Miller, "Hot Electron Reaction Dynamics at GaAs Surfaces," Northeast Regional Meeting, American Chemical Society, Rochester, October 1995.
  198. Y. Gao, "Interface Formation in Organic Semiconductor Devices," Northeast Regional Meeting, American Chemical Society, Rochester, October 1995.
  199. H. Razafitrimo, E. Ettedgui, Y. Gao, and B.R. Hsieh, "Scanning Tunneling Microscopy (STM) Study of the Surfaces in Polymeric Light Emitting Diode (LED)," American Vacuum Society, Up-State New York Symposium, Rochester, New York, June 1995.
  200. Y. Gao, J. Cao, R.J.D. Miller, H. Elsayed-Ali, and D.A. Mantell, "Anomalous Long Electron Lifetime Observed on Alkali Metal Covered Cu Films," American Physical Society, San Jose, March 1995.
  201. J. Cao, R.J.D. Miller, Y. Gao, H. Elsayed-Ali, C.A. Schmuttenmaer, and D.A. Mantell, "Time-Resolved Two Photon Photoemission Studies of the Electron Dynamics of Au(111) Films," American Physical Society, San Jose, March 1995.
  202. H. Razafitrimo, E. Ettedgui, Y. Gao, and B.R. Hsieh, "Scanning Tunneling Microscopy (STM) Study of the Surface and Interface of Polymeric Light Emitting Diode (LED)," American Physical Society, San Jose, March 1995.
  203. E. Ettedgui, H. Razafitrimo, Y. Gao, and B.R. Hsieh, "Effects of Sample Aging on the Interface Formation Between Aluminum and Poly(p-Phenylene Vinylene) by I-V Measurements and X-Ray Photoelectron Spectroscopy," American Physical Society, San Jose, March 1995.
  204. V. Choong, Y. Park, Y. Gao, and B.R. Hsieh, "Molecular Quantum Mechanical Calculations of the Interface Formation of Aluminum and Poly(Phenylene Vinylene) (PPV) Oligomers," American Physical Society, San Jose, March 1995.
  205. Y. Park, E. Ettedgui, Y. Gao, and B.R. Hsieh, "Spectroscopic Studies of Thin Poly(Phenylene Vinylene) Oligomer Films Deposited on Metal Surface," American Physical Society, San Jose, March 1995.
  206. H. Razafitrimo, K.T. Park, E. Ettedgui, Y. Gao, and B.R. Hsieh, "Interface Formation of Ca with Poly(p-phenylene vinylene)-Di-Phenyl and Poly(p-phenylene vinylene)-Phenyl," Rochester Materials Research Society Symposium, Rochester, September 1994.
  207. E. Ettedgui, Y. Gao, and B.R. Hsieh, "X-ray Photoemission Spectroscopy Study of Band Bending at the Interface of Metal with Poly(p-phenylene vinylene)," Rochester Materials Research Society Symposium, Rochester, September 1994.
  208. E. Ettedgui, H. Razafitrimo, K.T. Park, Y. Gao, and B.R. Hsieh, "X-ray Photoemission Spectroscopy Study of Band Bending at the Interface of Metal with Poly(p-phenylene vinylene)," AVS Symposium of Applied Surface Science, Boston, June 1994.
  209. J.W. Herman, J. Cao, C.A. Schmuttenmaer, R.J.D. Miller, Y. Gao, M.A. Aeshelimann, and D.A. Mantell, "Time-Resolved Two Photon Photoemission Studies of the Excited Electron Dynamics on Cesiated Cu(100)," American Physical Society, Pittsburgh, March 1994.
  210. H. Razafitrimo, E. Ettedgui, J.A. Osaheni, S.A. Jenekhe, and Y. Gao, "Ca on Poly(p-phenylene bensobisoxazole): Interface Reaction and Band Bending," American Physical Society, Pittsburgh, March 1994.
  211. H. Razafitrimo, E. Ettedgui, Z.-W. Li, T. Brown, Y. Gao, and B.R. Hsieh, "Microscopic Study of Thin Poly(p-phenylene vinylene) Film," American Physical Society, Pittsburgh, March 1994.
  212. J. Cao, C.A. Schmuttenmaer, J.W. Herman, R.J.D. Miller, Y. Gao, and D.A. Mantell, "Effect of Electron Lifetime Measurements by Time-Resolved Two Photon Photoemission," American Physical Society, Pittsburgh, March 1994.
  213. C.A. Schmuttenmaer, M.A. Aeshelimann, J. Cao, Y. Gao, R.J.D. Miller, and D.A. Mantell, "Generation of Photoelectrons with Excess Kinetic Energy from Metal Surfaces," American Physical Society, Pittsburgh, March 1994.
  214. K.T. Park, Y. Gao, and B.R. Hsieh, "Comparative Study of Interface Formation of Ca with Polymers," American Physical Society, Pittsburgh, March 1994.
  215. E. Ettedgui, H. Razafitrimo, Y. Gao, and B.R. Hsieh, "Interface Formation of Al with Poly(p-phenylene vinylene) and the Role of Surface Preparation," American Physical Society, Pittsburgh, March 1994.
  216. J. Cao, Y. Gao, M.A. Aeshelimann, C.A. Schmuttenmaer, H.E. Elsayed-Ali, R.J.D. Miller, and D.A. Mantell, "Femtosecond Photoemission Studies of Single Crystal Copper Surfaces: Implications for Surface Photochemistry," Waterloo Chemical Physics Symposium, Waterloo, November 1993.
  217. M.A. Aeshelimann, C.A. Schmuttenmaer, J. Cao, Y. Gao, H.E. Elsayed-Ali, R.J.D. Miller, and D.A. Mantell, "Generation of Photoelectrons with excess Kinetic Energy from Metal Surfaces," Am. Opt. Soc. Symp., Toronto, October 1993.
  218. C.A. Schmuttenmaer, M.A. Aeshelimann, J. Cao, H.E. Elsayed-Ali, R.J.D. Miller, D.A. Mantell, and Y. Gao, "Photoexcited Charge Transfer to Adsorbates at Metal Surfaces," Am. Opt. Soc. Symp., Toronto, October 1993.
  219. C.A. Schmuttenmaer, J. Cao, M.A. Aeshelimann, H.E. Elsayed-Ali, R.J.D. Miller, D.A. Mantell, and Y. Gao, "Femtosecond Photoemission Studies of Above Threshold Ionization from Cu(100) and Cu(110)," 53rd Physical Electronics Conference, Troy, June 1993.
  220. L. Tsybeskov, C. Peng, S.P. Duttagupta, E. Ettedgui, Y. Gao, P.M. Fauchet, and G.E. Carver, "Comparative Study of Light-Emitting Porous Silicon Anodized with Light Assistance and in the Dark," Mat. Res. Soc. Symp., May 1993.
  221. P.M. Fauchet, E. Ettedgui, A. Raisanen, L.J. Brillson, F. Seiferth, S.K. Kurinec, Y. Gao, C. Peng, and L. Tsybeskov, "Can Oxidation and Other Treatments Help Us Understand the Nature of Light-Emitting Porous Silicon?" Mat. Res. Soc. Symp., May 1993.
  222. Ken T. Park and Y. Gao, "Cryogenic Growth of Al Nitride Layers on GaAs(110): X-ray Photoemission and Inverse Photoemission Spectroscopy Studies," American Physical Society, Seattle, March 1993.
  223. Y. Gao, Ken T. Park, and B.R Hsieh, "Interface Formation of Al and Ca with Poly(p-phenylene vinylene)," American Physical Society, Seattle, March 1993.
  224. Bing R. Hsieh, Y. Gao, and Ken T. Park, "Characteristics of Metal-Poly(phenylene vinylene) Interfaces," Symp. International Soc. Opt. Eng., San Jose, February, 1993.
  225. E. Ettedgui, C. Peng, L. Tsybeskov, Y. Gao, P.M. Fauchet, H.A. Mizes, and G.E. Carver, "High Spatial Resolution Mapping of Porous Silicon," Mat. Res. Soc. Symp., Pittsburgh, November, 1992.
  226. Ken T. Park and Y. Gao, "A Study of Al Nitride Layers on GaAs(110) Using X-ray Photoemission Spectroscopy and Inverse Photoemission Spectroscopy," American Physical Society, Indianapolis, Indiana, March 1992.
  227. Y. Gao and Ken T. Park, "Medium Energy Electron Diffraction from Cu(100)," American Physical Society, Indianapolis, Indiana, March 1992.
  228. Ken T. Park, Jianming Cao, Y. Gao, M.W. Ruckman, "Nitridation and Nitride layers Growth on GaAs(100)," American Vacuum Society, New York State Symposium, Rochester, New York, June 1991.
  229. Y. Gao and Jianming Cao, "Incident Beam Effects in Electron-stimulated Auger Electron Diffraction," American Physical Society, Cincinnati, Ohio, March 1991.
  230. E.A. Murphy, H.E. Elsayed-Ali, Ken T. Park, Jianming Cao, and Y. Gao, "Anisotropy of Surface Disordering of Pb(100): An Angle Resolved X-Ray Photoemission Study," American Physical Society, Cincinnati, Ohio, March 1991.
  231. Ken T. Park, Jianming Cao, Y. Gao, M.W. Ruckman, "Growth of Nitride layers on GaAs(100) by Al Deposition on Cryogenically Condensed NH3," American Physical Society, Cincinnati, Ohio, March 1991.
  232. Y. Gao, C.P. Lusignan, M.W. Ruckman, and M. Strongin, "Al Oxide Growth on GaAs(100) by Reactive Deposition into an Adsorbed Molecular Oxygen Layer," American Physical Society, Anaheim, California, March 1990.
  233. Y. Gao, T.J. Wagener, Y. Hu, M.B. Jost, J.H. Weaver, N.D. Spencer, and K.C. Goretta, "Resonance Inverse Photoemission of Bi2Ca1+xSr2-xCu2O8+y and YBa2Cu3O7-x, Unoccupied Oxygen States, and Plasmons," American Physical Society, St. Louis, Missouri, March 1989.
  234. Y. Gao, Y. Hu, T.J. Wagener, and J.H. Weaver, "Empty Electronic State Evolution for Sc and Electron Dynamics at the 3p-3d Giant Dipole Resonance," American Physical Society, St. Louis, Missouri, March 1989.
  235. B.M. Trafas, I.M. Vitomirov, C.M. Aldao, Y. Gao, F. Xu, J.H. Weaver, and D.L. Partins, "Cr Co, Pd, Au, and In Overlayers on PbS(100) Surfaces: Adatom Interactions and Interface Formation," 35th American Vacuum Society Symposium, Atlanta, Georgia, October 1988.
  236. G.D. Waddill, C.M. Aldao, I.M. Vitomirov, Y. Gao, and J.H. Weaver, "Temperature Effects on Schottky Barrier Formation for Au/lnP(110)," 35th American Vacuum Society Symposium, Atlanta, Georgia, October 1988.
  237. Yongjun Hu, T.J. Wagener, Y. Gao, H.M. Meyer III, J.H. Weaver, "Unoccupied Electronic Structure in Cluster Formation: Au, Pd, and Sc on Graphite," 35th American Vacuum Society Symposium, Atlanta, Georgia, October 1988.
  238. T.J. Wagener, Y. Gao, H.M. Meyer III, Yongjun Hu, J.H. Weaver, D. Peterson, Z. Fisk, and A.J. Arko, "Inverse Photoemission Study of Single Crystal High Tc Superconductors," 35th American Vacuum Society Symposium, Atlanta, Georgia, October 1988.
  239. T.J. Wagener, Y. Gao, H.M. Meyer III, D.M. Hill, S.G. Anderson, and J.H. Weaver, "Spectroscopic Examinations of the Surface Stability of High Temperature Superconductors," 34th American Vacuum Society Symposium, Anaheim, California, November 1987.
  240. H.M. Meyer III, Y. Gao, T.J. Wagener, D.M. Hill, S.G. Anderson, and J.H. Weaver, "High Temperature Superconductors: Occupied and Unoccupied Electronic States," 34th American Vacuum Society Symposium, Anaheim, California, November 1987.
  241. Y. Gao, H.M. Meyer III, T.J. Wagener, D.M. Hill, S.G. Anderson, and J.H. Weaver, "Interface Formation: High Temperature Superconductors with Noble Metals, Reactive Transition Metals, and Semiconductors," 34th American Vacuum Society Symposium, Anaheim, California, November 1987.
  242. Y. Gao, T.J. Wagener, D.M. Hill, H.M. Meyer III, J.H. Weaver, A.J. Arko, B. Flandermeyer, and D.W. Capone II, "High-Temperature Superconductors: Occupied and Unoccupied Electronic States, Surface Stability, and Interface Formation," 194th Meeting of American Chemical Society, New Orleans, Louisiana, August 1987.
  243. Y. Gao and R. Reifenberger, "Measurements of Electron Yield in Photofield Emission from Tungsten," American Physical Society, Las Vegas, Nevada, March 1986.
  244. Y. Gao and R. Reifenberger, "Field Emission Energy Distribution Study of Laser Induced Thermal Effects on Metal Surfaces," 32nd American Vacuum Society Symposium, Houston, Texas, November 1985.
  245. Y. Gao and R. Reifenberger, "Field Emission Energy Distribution Study of Laser-Induced Thermal Effects of W(100) Surface Reconstruction," Tri-State Symposium of the American Vacuum Society, Oconomowoc, Wisconsin, June 1985.
  246. Y. Gao and R. Reifenberger, "Polarization Dependence of Photoemission from the W(100) Surface State at Energies Below Threshold," American Physical Society, Baltimore, Maryland, March 1985.