Enhanced out-coupling efficiency of organic light-emitting diodes using an nanostructure imprinted by an alumina nanohole array

Kuniaki Endo, Chihaya Adachi

研究成果: Contribution to journalArticle査読

15 被引用数 (Scopus)

抄録

We demonstrate organic light-emitting diodes (OLEDs) with enhanced out-coupling efficiency containing nanostructures imprinted by an alumina nanohole array template that can be applied to large-emitting-area and flexible devices using a roll-to-roll process. The nanostructures are imprinted on a glass substrate by an ultraviolet nanoimprint process using an alumina nanohole array mold and then an OLED is fabricated on the nanostructures. The enhancement of out-coupling efficiency is proportional to the root-mean-square roughness of the nanostructures, and a maximum improvement of external electroluminescence quantum efficiency of 17% is achieved. The electroluminescence spectra of the OLEDs indicate that this improvement is caused by enhancement of the out-coupling of surface plasmon polaritons.

本文言語英語
論文番号121102
ジャーナルApplied Physics Letters
104
12
DOI
出版ステータス出版済み - 3 24 2014

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(その他)

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