Crystalline/amorphous Raman markers of hole-transport material NPD in organic light-emitting diodes

Takuro Sugiyama, Yukio Furukawa*, Hidetoshi Fujimura

*この研究の対応する著者

研究成果査読

18 被引用数 (Scopus)

抄録

Raman marker bands characteristic of solid-state structure have been found for N,N′-di-1-naphthaleyl-N,N′-diphenyl-1,1′-biphenyl-4, 4′-diamine (NPD), which is used as a hole-transport material in organic light-emitting diodes. The widths of the marker bands observed for an amorphous state at 1607, 1290, and 1192 cm-1 are broader than those for the crystalline state observed at 1609, 1288, and 1198 cm-1. These Raman bands are found to be useful for detecting the crystallization, which may cause degradation of organic light emitting diodes, of amorphous NPD films.

本文言語English
ページ(範囲)330-333
ページ数4
ジャーナルChemical Physics Letters
405
4-6
DOI
出版ステータスPublished - 2005 4 12

ASJC Scopus subject areas

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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