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Multi-color-emitting quantum dot-based white LEDs

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Abstract

Research on white light-emitting diodes (LEDs) based on multi-color-emitting quantum dots (QDs) is carried out in this Letter. The equations of luminous efficiency (LE), color rendering index (CRI), chromaticity coordinates (x,y), and color temperature (Tc) of white LEDs are obtained, according to the spectral-LE function Φ of LED chips and QDs. The calculated results indicate that the values of the performance parameters of QD-based white LEDs are closely related and proportional to the QDs’ fluorescence spectra, and white LEDs with a high LE and a high CRI may be fabricated based on QDs. We have provided theoretical guidance for preparing such white LEDs.

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DOI:10.3788/col201614.112301

所属栏目:Optical devices

收稿日期:2016-08-04

录用日期:2016-09-23

网络出版日期:2016-10-27

作者单位    点击查看

Xiaoqin Gao:National Mobile Communications Research Laboratory, Southeast University, Nanjing 21 0096, China
Jian Dang:National Mobile Communications Research Laboratory, Southeast University, Nanjing 21 0096, China
Liang Wu:National Mobile Communications Research Laboratory, Southeast University, Nanjing 21 0096, China
Bin Sheng:National Mobile Communications Research Laboratory, Southeast University, Nanjing 21 0096, China
Jiayu Zhang:School of Electronic Science and Engineering, Advanced Photonics Center, Southeast University, Nanjing 2 10096, China
and Zaichen Zhang:National Mobile Communications Research Laboratory, Southeast University, Nanjing 21 0096, China

联系人作者:联系作者(zczhang@seu.edu.cn)

备注:This work was supported by the National Natural Science Foundation of China under Grant Nos. 61571105 and 61223001. The authors want to thank Prof. T.-C. Poon of Virginia Tech for editing some parts of the paper.

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引用该论文

Xiaoqin Gao, Jian Dang, Liang Wu, Bin Sheng, Jiayu Zhang, and Zaichen Zhang, "Multi-color-emitting quantum dot-based white LEDs," Chinese Optics Letters 14(11), 112301 (2016)

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