Electronic structure of organic carrier transporting material/metal interfaces as a model interface of electroluminescent device studied by UV photoemission

K. Sugiyama, D. Yoshimura, E. Ito, Takafumi Miyazaki, Y. Hamatani, I. Kawamoto, H. Ishii, Y. Ouchi, K. Seki

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Electronic structures of N,N′-diphenyl-N,N′- (3-methylphenyl)-1,1′-biphenyl-4,4′-diamine (TPD) / metal and N,N′-diphenyl-1,4,5,8-naphtyltetracarboxylimide (DP-NTCI) / metal interfaces were directly investigated as a model interface of organic electroluminescent (EL) devices using UV photoemission spectroscopy (UPS). At the organic / metal interfaces, abrupt shift of vacuum level was observed, in contrast to the traditional assumption of common vacuum level at the interface. For understanding EL devices, we see the necessity of the direct observation of the interfacial electronic structure by UPS or other techniques for understanding EL devices.

Original languageEnglish
Pages (from-to)2425-2426
Number of pages2
JournalSynthetic Metals
Volume86
Issue number1 -3 pt 3
DOIs
Publication statusPublished - Jan 1 1997
Externally publishedYes

Fingerprint

Luminescent devices
Photoemission
Electronic structure
photoelectric emission
Metals
Photoelectron spectroscopy
electronic structure
Ultraviolet spectroscopy
Vacuum
metals
Diamines
Temperature programmed desorption
vacuum
diamines
spectroscopy
diphenyl
shift

Keywords

  • Metal/semiconductor interfaces
  • Photoelectron spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics

Cite this

Electronic structure of organic carrier transporting material/metal interfaces as a model interface of electroluminescent device studied by UV photoemission. / Sugiyama, K.; Yoshimura, D.; Ito, E.; Miyazaki, Takafumi; Hamatani, Y.; Kawamoto, I.; Ishii, H.; Ouchi, Y.; Seki, K.

In: Synthetic Metals, Vol. 86, No. 1 -3 pt 3, 01.01.1997, p. 2425-2426.

Research output: Contribution to journalArticle

Sugiyama, K. ; Yoshimura, D. ; Ito, E. ; Miyazaki, Takafumi ; Hamatani, Y. ; Kawamoto, I. ; Ishii, H. ; Ouchi, Y. ; Seki, K. / Electronic structure of organic carrier transporting material/metal interfaces as a model interface of electroluminescent device studied by UV photoemission. In: Synthetic Metals. 1997 ; Vol. 86, No. 1 -3 pt 3. pp. 2425-2426.
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