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

Abstract

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.

Authors:
 [1];  [1]
  1. Center for Organic Photonics and Electronics Research, Kyushu University, 744 Motooka, Nishi, Fukuoka 819-0395 (Japan)
Publication Date:
OSTI Identifier:
22258616
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM OXIDES; ELECTROLUMINESCENCE; LIGHT EMITTING DIODES; NANOSTRUCTURES; QUANTUM EFFICIENCY

Citation Formats

Endo, Kuniaki, Yokohama Research Laboratories, Mitsubishi Rayon Co., Ltd., 10-1 Daikoku, Tsurumi, Yokohama 230-0053, Adachi, Chihaya, and Institute for Carbon Neutral Energy Research. Enhanced out-coupling efficiency of organic light-emitting diodes using an nanostructure imprinted by an alumina nanohole array. United States: N. p., 2014. Web. doi:10.1063/1.4869468.
Endo, Kuniaki, Yokohama Research Laboratories, Mitsubishi Rayon Co., Ltd., 10-1 Daikoku, Tsurumi, Yokohama 230-0053, Adachi, Chihaya, & Institute for Carbon Neutral Energy Research. Enhanced out-coupling efficiency of organic light-emitting diodes using an nanostructure imprinted by an alumina nanohole array. United States. https://doi.org/10.1063/1.4869468
Endo, Kuniaki, Yokohama Research Laboratories, Mitsubishi Rayon Co., Ltd., 10-1 Daikoku, Tsurumi, Yokohama 230-0053, Adachi, Chihaya, and Institute for Carbon Neutral Energy Research. 2014. "Enhanced out-coupling efficiency of organic light-emitting diodes using an nanostructure imprinted by an alumina nanohole array". United States. https://doi.org/10.1063/1.4869468.
@article{osti_22258616,
title = {Enhanced out-coupling efficiency of organic light-emitting diodes using an nanostructure imprinted by an alumina nanohole array},
author = {Endo, Kuniaki and Yokohama Research Laboratories, Mitsubishi Rayon Co., Ltd., 10-1 Daikoku, Tsurumi, Yokohama 230-0053 and Adachi, Chihaya and Institute for Carbon Neutral Energy Research},
abstractNote = {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.},
doi = {10.1063/1.4869468},
url = {https://www.osti.gov/biblio/22258616}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 12,
volume = 104,
place = {United States},
year = {Mon Mar 24 00:00:00 EDT 2014},
month = {Mon Mar 24 00:00:00 EDT 2014}
}