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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/7935

Title: High-current Injection and Transport on Order of kA/cm^2 in Organic Light-emitting Diodes Having Mixed Organic/Organic Heterojunction Interfaces
Authors: Matsushima, Toshinori
Adachi, Chihaya
Keywords: organic light-emitting diode
organic/organic heterojunction interface
high current density
electrically pumped organic laser diode
Issue Date: 2007-09-07
Publisher: The Japan Society of Applied Physics
Magazine name: Japanese Journal of Applied Physics
Volume: 46
Number: 35
Start page: L861
End page: L863
DOI: 10.1143/JJAP.46.L861
Abstract: 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 3.6 V at a current flow of 100 mA/cm^2, 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/cm^2 and emits bright electroluminescence of 7.9 Mcd/m^2 under direct current.
Rights: This is the author's version of the work. It is posted here by permission of The Japan Society of Applied Physics. Copyright (C) 2007 The Japan Society of Applied Physics. Toshinori Matsushima, and Chihaya Adachi, Japanese Journal of Applied Physics, 46(35), 2007, L861-L863. http://jjap.ipap.jp/link?JJAP/46/L861/
URI: http://hdl.handle.net/10119/7935
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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