Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455, United States.
Nano Lett. 2011 May 11;11(5):1952-6. doi: 10.1021/nl2001692. Epub 2011 Apr 4.
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.
我们展示了硅纳米晶体（SiNCs）的高效电致发光。在优化的纳米晶-有机发光器件中，通过仅源自 SiNCs 的发射，可以实现高达 8.6%的峰值外量子效率。这里报道的高效率首次表明，通过选择适当的器件结构，可以实现间接带隙半导体纳米晶体的高效电致发光。
