White light-emitting diode based on Multi-core/shell CdSe/ZnS quantum dots

被引：0
|
作者：
Shen C. [1 ]
Li K. [1 ]
Ming J. [2 ]
机构：
[1] Institute of Optoelectronic Technology, China Jiliang University
[2] Hangzhou DaMing Fluorescent Material Co., Ltd.
来源：
Chinese Optics Letters | 2011年 / 9卷 / SUPPL. 1期
关键词：
D O I：
10.3788/COL201109.S10703
中图分类号：
学科分类号：
摘要：
Core/shell CdSe/ZnS quantum dots (QDs) are synthesized by thermal deposition using cadmium oxide and selenium as precursors for a hot lauric acid and hexadecylamine trioctylphosphine oxide hybrid. The CdSe/ZnS QDs show high photoluminescence efficiency, with a quantum yield greater than 48% and size-tunable emission wavelengths ranging from 500 to 620 nm. A diode that emits white light with color coordinates of (0.311, 0.321) and luminous efficiency of 46.7 lm/W at 20 mA, as standardized by the Commission Internationale de L'Eclairage or International Commission on Illumination, is fabricated by combining a blue indium-gallium nitride (InGaN) chip with multi-CdSe/ZnS QDs. © 2011 Chinese Optics Letters.
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