Color-tunable electroluminescence from white organic light-emitting devices through coupled surface plasmons

被引：33
|
作者：
Feng, Jing [1 ]
Okamoto, Takayuki [1 ]
Simonen, Janne [1 ]
Kawata, Satoshi [1 ]
机构：
[1] RIKEN, Nanophoton Lab, Wako, Saitama 3510198, Japan
来源：
APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 08期
基金：
日本学术振兴会;
关键词：
D O I：
10.1063/1.2645149
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The authors report color-tunable electroluminescence from white organic light-emitting devices (WOLEDs) through coupling of surface plasmons in a metal/insulator/metal (MIM) structure. The MIM structure was fabricated by depositing Ag and 2, 9-dimethyl-4, 7-diphenyl-1, 10-phenanthroline (BCP) films on the Ag cathode of a WOLED. The transmission wavelength through the MIM structure depends on the thickness of the middle BCP layer and can be tuned in the visible range. Therefore, the broadband emission from WOLEDs is selectively transmitted, and color-tunable EL emission was obtained. Blue, green, and red light emissions were observed when the BCP layer thicknesses are 70, 100, and 130 nm, respectively. (c) 2007 American Institute of Physics.
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