High-Efficiency Silicon Nanocrystal Light-Emitting Devices

被引：314
|
作者：
Cheng, Kai-Yuan [1 ]
Anthony, Rebecca [2 ]
Kortshagen, Uwe R. [2 ]
Holmes, Russell J. [1 ]
机构：
[1] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA
[2] Univ Minnesota, Dept Mech Engn, Minneapolis, MN 55455 USA
来源：
NANO LETTERS | 2011年 / 11卷 / 05期
基金：
美国国家科学基金会;
关键词：
Silicon nanocrystal; hybrid nanocrystal-OLEDs; electroluminescence; PLASMA SYNTHESIS; QUANTUM; ELECTROLUMINESCENCE; DIODES; TRANSPORT;
D O I：
10.1021/nl2001692
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We demonstrate highly efficient electroluminescence from silicon nanocrystals (SiNCs). In an optimized nanocrystal-organic light-emitting device, peak external quantum efficiencies of up to 8.6% can be realized with emission originating solely from the SiNCs. The high efficiencies reported here demonstrate for the first time that with an appropriate choice of device architecture it is possible to achieve highly efficient electroluminescence from nanocrystals of an indirect band gap semiconductor.
引用
收藏
页码：1952 / 1956
页数：5
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