基于CuInS2/ZnS核壳结构量子点的高光效暖白光LED

艾哲; 倪帅帅; 张亚非

doi:10.3788/fgxb20153611.1282

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基于CuInS₂/ZnS核壳结构量子点的高光效暖白光LED

材料合成及性能 | 更新时间：2020-08-12

- 基于CuInS₂/ZnS核壳结构量子点的高光效暖白光LED
- Warm White LED with High Luminous Efficiency Based on CuInS₂/ZnS Core/Shell Quantum Dots
- 发光学报 2015年36卷第11期页码：1282-1288
- 作者机构：
  
  上海交通大学电子信息与电气工程学院薄膜与微细加工技术教育部重点实验室上海,200240
- 作者简介：
- 基金信息：
  
  国家自然科学基金(YYWX_E12102791-201304)资助项目()
- DOI：10.3788/fgxb20153611.1282
  中图分类号： O482.31
- 纸质出版日期：2015-11-10，
  
  收稿日期：2015-8-13，
  
  修回日期：2015-9-19，
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艾哲, 倪帅帅, 张亚非. 基于CuInS2/ZnS核壳结构量子点的高光效暖白光LED[J]. 发光学报, 2015,36(11): 1282-1288

AI Zhe, NI Shuai-shuai, ZHANG Ya-fei. Warm White LED with High Luminous Efficiency Based on CuInS2/ZnS Core/Shell Quantum Dots[J]. Chinese Journal of Luminescence, 2015,36(11): 1282-1288
艾哲, 倪帅帅, 张亚非. 基于CuInS2/ZnS核壳结构量子点的高光效暖白光LED[J]. 发光学报, 2015,36(11): 1282-1288 DOI： 10.3788/fgxb20153611.1282.

AI Zhe, NI Shuai-shuai, ZHANG Ya-fei. Warm White LED with High Luminous Efficiency Based on CuInS2/ZnS Core/Shell Quantum Dots[J]. Chinese Journal of Luminescence, 2015,36(11): 1282-1288 DOI： 10.3788/fgxb20153611.1282.

摘要

采用逐步热注射法合成了用于白光LED的CuInS

/ZnS(CIS/ZnS)核壳结构量子点.通过调整Cu/In的比率

在CuInS

(CIS)量子点的基础上

合成了发射波长在570~650 nm之间可调的CIS/ZnS量子点.与CIS量子点的低量子产率相比

具有核壳结构的CIS/ZnS量子点的量子产率达到了78%.通过在黄光荧光粉YAG :Ce

表面旋涂CIS/ZnS量子点的方式制备了暖白光LED器件.在工作电流为10 mA时

暖白光LED的发光效率达到了244.58 lm/W.由于CIS/ZnS量子点的加入

所制备的白光LED器件的显色指数达到86.7且发光颜色向暖色调发生了转移

相应的色坐标为(0.340 6

0.369 0).

Abstract

A stepwise hot-injection method was proposed to synthesize CuInS

/ZnS (CIS/ZnS) core/shell quantum dots. Based on CIS quantum dots

the emission bands of the prepared CIS/ZnS quantum dots can be tuned from 570 to 650 nm by varying Cu/In ratio. Compared to the low quantum yields of CIS quantum dots

the quantum yields of CIS/ZnS core/shell quantum dots can reach 78%. The white LEDs with warm tone were successfully obtained

via

spin-coating CIS/ZnS quantum dots on the yellow phosphor YAG :Ce

. The experimental results indicate that the white LEDs possess high luminous efficiency of 244.58 lm/W under 10 mA current density. As a result of joining CIS/ZnS quantum dots

the prepared white LEDs display higher color rendering index (CRI) of about 82.7 and warm white light with a correlated CIE parameters of (0.340 6

0.369 0).

关键词

CuInS2/ZnS核壳结构量子点可调暖白光

Keywords

CuInS2/ZnScore/shell quantum dotstunablewarm white light

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