K
Kiyoshi Sugiyama
Researcher at Nagoya University
Publications - 22
Citations - 3894
Kiyoshi Sugiyama is an academic researcher from Nagoya University. The author has contributed to research in topics: Photoemission spectroscopy & Vacuum level. The author has an hindex of 9, co-authored 22 publications receiving 3761 citations. Previous affiliations of Kiyoshi Sugiyama include Komatsu Limited.
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Journal ArticleDOI
Energy level alignment and interfacial electronic structures at organic/metal and organic/organic interfaces
Journal ArticleDOI
Dependence of indium–tin–oxide work function on surface cleaning method as studied by ultraviolet and x-ray photoemission spectroscopies
TL;DR: In this article, the effect of the method used to clean indium-tin-oxide (ITO) on its work function was investigated by ultraviolet photoemission spectroscopy (UPS) and x-ray photo-emission spectrum analysis (X-ray PSA) and it was shown that C-containing contaminants, O/In ratio, and In/Sn ratio on the ITO surface affect the work function.
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Electronic structures of organic molecular materials for organic electroluminescent devices studied by ultraviolet photoemission spectroscopy
Kiyoshi Sugiyama,Daisuke Yoshimura,Takayuki Miyamae,Takafumi Miyazaki,Hisao Ishii,Yukio Ouchi,Kazuhiko Seki +6 more
TL;DR: In this article, the electronic structures of evaporated films of five organic light-emitting and carrier-injecting materials for organic electroluminescent devices were studied by ultraviolet photo-emission spectroscopy.
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Energy-level alignment at model interfaces of organic electroluminescent devices studied by UV photoemission: trend in the deviation from the traditional way of estimating the interfacial electronic structures
TL;DR: In this article, the electronic structures of model interfaces of organic electroluminescent (EL) devices were investigated with UV photo-emission spectroscopy (UPS), and the authors found that the work function of metal electrode was changed by deposition of organic layer, indicating the invalidity of the traditional energy level alignment model where a common vacuum level was assumed at organic/metal interface.
Journal ArticleDOI
Electronic structure of 8-hydroxyquinoline aluminum (alq3)/metal interfaces studied by UV photoemission
H. Ishii,Daisuke Yoshimura,Kiyoshi Sugiyama,S. Narioka,Y. Hamatani,I. Kawamoto,Takafumi Miyazaki,Yukio Ouchi,Kanako Seki +8 more
TL;DR: The electronic structures of tris(8-hydroxyquinoline) aluminum (Alq 3 ) / metal (Au, Al) interfaces as a model interface of organic electroluminescent (EL) devices were investigated by ultraviolet photo-emission spectroscopy (UPS) as discussed by the authors.