基于Cu掺杂ZnInS和ZnCdS量子点的高显色性白光LED

袁曦; 马瑞新; 单美玲; 赵家龙; 李海波

doi:10.3788/fgxb20153611.1258

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基于Cu掺杂ZnInS和ZnCdS量子点的高显色性白光LED

材料合成及性能 | 更新时间：2020-08-12

- 基于Cu掺杂ZnInS和ZnCdS量子点的高显色性白光LED
- High Color Rendering White-light-emitting Diodes Based on Cu-doped ZnInS and ZnCdS Quantum Dots
- 发光学报 2015年36卷第11期页码：1258-1265
- 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：
  
  国家自然科学基金(21371071)资助项目()
- DOI：10.3788/fgxb20153611.1258
  中图分类号： TN312.8;O482.31
- 纸质出版日期：2015-11-10，
  
  收稿日期：2015-8-21，
  
  修回日期：2015-9-28，
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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.

关键词

量子点纳米晶Cu掺杂量子点白色发光二极管能量传递

Keywords

quantum dotsnanocrystalsCu-dopedquantum dotswhite LEDsenergy transfer

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