High-current injection and transport on order of kA/cm2 in organic light-emitting diodes having mixed organic/organic heterojunction interfaces

研究成果: ジャーナルへの寄稿学術誌査読

23 被引用数 (Scopus)

抄録

We manufactured multilayer organic light-emitting diodes (OLEDs) with mixed organic/organic heterojunction interfaces composed of alpha-sexithiophene and phenyldipyrenylphosphine oxide carrier-transporting layers. In the mixed-interface OLEDs, we achieved a low driving voltage of 3.6V at a current flow of 100mA/cm2, which was caused by efficient carrier injection at the mixed interfaces. We investigated how much current can flow through these OLEDs with the aim of fabricating electrically pumped organic laser diodes. We found that an OLED of this type with a small active area of 625 μm 2 on a high-thermal-conductivity sapphire substrate can sustain high current densities of 1.1 kA/cm2 and emits bright electroluminescence of 7.9 Mcd/m2 under direct current.

本文言語英語
ページ(範囲)L861-L863
ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
46
33-35
DOI
出版ステータス出版済み - 9月 7 2007

!!!All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(その他)
  • 物理学および天文学(全般)

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