High Color Rendering White-light-emitting Diodes Based on Cu-doped ZnInS and ZnCdS Quantum Dots

YUAN Xi; MA Rui-xin; SHAN Mei-ling; ZHAO Jia-long; LI Hai-bo

doi:10.3788/fgxb20153611.1258

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High Color Rendering White-light-emitting Diodes Based on Cu-doped ZnInS and ZnCdS Quantum Dots

更新时间：2020-08-12

- High Color Rendering White-light-emitting Diodes Based on Cu-doped ZnInS and ZnCdS Quantum Dots
- Chinese Journal of Luminescence Vol. 36, Issue 11, Pages: 1258-1265(2015)
- 作者机构：
  
  1. 吉林师范大学功能材料物理与化学教育部重点实验室,吉林四平,136000
  2. 吉林师范大学信息技术学院,吉林四平,136000
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20153611.1258
  CLC： TN312.8;O482.31
- Received：21 August 2015，
  
  Revised：28 September 2015，
  
  Published：10 November 2015
- 稿件说明：
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袁曦, 马瑞新, 单美玲等. 基于Cu掺杂ZnInS和ZnCdS量子点的高显色性白光LED[J]. 发光学报, 2015,36(11): 1258-1265

YUAN Xi, MA Rui-xin, SHAN Mei-ling etc. High Color Rendering White-light-emitting Diodes Based on Cu-doped ZnInS and ZnCdS Quantum Dots[J]. Chinese Journal of Luminescence, 2015,36(11): 1258-1265
袁曦, 马瑞新, 单美玲等. 基于Cu掺杂ZnInS和ZnCdS量子点的高显色性白光LED[J]. 发光学报, 2015,36(11): 1258-1265 DOI： 10.3788/fgxb20153611.1258.

YUAN Xi, MA Rui-xin, SHAN Mei-ling etc. High Color Rendering White-light-emitting Diodes Based on Cu-doped ZnInS and ZnCdS Quantum Dots[J]. Chinese Journal of Luminescence, 2015,36(11): 1258-1265 DOI： 10.3788/fgxb20153611.1258.

摘要

利用胶体化学方法合成了发光波长可调的Cu掺杂量子点

其波长范围可从绿光到深红光连续调节.通过将绿光ZnInS :Cu和红光ZnCdS :Cu量子点与蓝光GaN芯片相结合

制备了高显色性的白光LED

其流明效率为71 lmW

-1

色温为4 788 K

显色指数高达94

CIE色坐标为(0.352 4

0.365 1).通过测量Cu掺杂量子点的荧光衰减曲线

发现不存在从绿光ZnInS :Cu到红光ZnCdS :Cu量子点的能量传递过程

因为红光ZnCdS :Cu量子点在绿光波段没有吸收. 实验结果表明

Cu掺杂量子点有望应用于固态照明领域.

Abstract

Cu-doped quantum dots (QDs) were used as color converting materials for preparing efficient white light-emitting diodes (LEDs). The Cu-doped QDs synthesized by chemical method showed composition-tunable emission from green to deep red and large Stokes shifts. By using the combination of green light-emitting ZnInS :Cu QDs and red emitting ZnCdS :Cu QDs with blue GaN chips

a high color rendering white LED was fabricated. The resulting three-band RGB QD-white LED exhibits high performance with luminous efficacy of 71 lm/W

color rendering index up to 94

CIE-coordinates of (0.352 4

0.365 1)

and color temperature of 4 788 K. Based on the changes in the photoluminescence lifetimes of Cu-doped QDs

it is found that the energy transfer process from green ZnInS :Cu QDs to red ZnCdS :Cu QDs can be negligible

because the red QDs had no absorption at green band. These results suggest that Cu-doped QDs are promising for solid state lighting.

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references

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Related Author

CHEN Xiao-hui

YUAN Xi

HUA Jie

ZHAO Jia-long

LI Hai-bo

WANG Xiu-ying

ZHAO Jia-long

WANG Xiu-ying

Related Institution

School of Science, Northeast University

Key Laboratory of Functional Materials Physics and Chemistry of The Ministry of Education, Jilin Normal University

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

Research Institute of Changchun University of Science and Technology in Chongqing

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