Warm White LED with High Luminous Efficiency Based on CuInS2/ZnS Core/Shell Quantum Dots

AI Zhe; NI Shuai-shuai; ZHANG Ya-fei

doi:10.3788/fgxb20153611.1282

您当前的位置：

首页 >

文章列表页 >

Warm White LED with High Luminous Efficiency Based on CuInS₂/ZnS Core/Shell Quantum Dots

更新时间：2020-08-12

- Warm White LED with High Luminous Efficiency Based on CuInS₂/ZnS Core/Shell Quantum Dots
- Chinese Journal of Luminescence Vol. 36, Issue 11, Pages: 1282-1288(2015)
- 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：
- DOI：10.3788/fgxb20153611.1282
  CLC： O482.31
- Received：13 August 2015，
  
  Revised：19 September 2015，
  
  Published：10 November 2015
- 稿件说明：
移动端阅览
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

Keywords

references

Arzu C, Ren L F, Wei N J, et al. Flexible quantum dot-PVA composites for white LEDs [J]. J. Mater. Chem. C, 2015, 3(2):257-264.

Talapin D V, Lee J S, Kovalenko M V, et al. Prospects of colloidal nanocrystals for electronic and optoelectronic applications [J]. Chem. Rev., 2010, 110(1):389-458.

Kamat P V. Quantum dot solar cells. Semiconductor nanocrystals as light harvesters [J]. J. Phys. Chem. C, 2008, 112(48):18737-18753.

Smith A M, Duan H W, Mohs A M, et al. Bioconjugated quantum dots for in vivo molecular and cellular imaging [J]. Adv. Drug Deliv. Rev., 2008, 60(11):1226-1240.

Xie R, Rutherford M, Peng X G. Formation of high-quality Ⅰ-Ⅲ-Ⅵ semiconductor nanocrystals by tuning relative reactivity of cationic precursors [J]. J. Am. Chem. Soc., 2009, 131(15):5691-5697.

Zhong H Z, Zhou Y, Ye M F, et al. Controlled synthesis and optical properties of colloidal ternary chalcogenide CuInS2 nanocrystals [J]. Chem. Mater., 2008, 20(20):6434-6443.

Li L, Daou T J, Texier I, et al. Highly luminescent CuInS2/ZnS core/shell nanocrystals: Cadmium-free quantum dots for in vivo imaging [J]. Chem. Mater., 2009, 21(12):2422-2429.

Li T L, Teng H. Solution synthesis of high-quality CuInS2 quantum dots as sensitizers for TiO2 photoelectrodes [J]. J. Mater. Chem., 2010, 20:3656-3664.

Nose K, Soma Y, Omata T, et al. Synthesis of ternary CuInS2 nanocrystals; phase determination by complex ligand species [J]. Chem. Mater., 2009, 21(13):2607-2613.

Woo S S, Heesun Y. Efficient white-light-emitting diodes fabricated from highly fluorescent copper indium slfide core/shell quantum dots [J]. Chem. Mater., 2012, 24(10):1961-1967.

Chen Y H, Zhang X, Zhou J, et al. Effect of red, green CdSe@ZnS quantum dots ratios on standard three-band white LED devices [J]. Chin. J. Lumin.(发光学报), 2014, 35(8):992-997 (in Chinese).

Wen J Z, Qing L, Wen Y J, et al. Color-tunable highly bright photoluminescence of cadmium-free cu-doped Zn-In-S nanocrystals and electroluminescence [J]. Chem. Mater., 2014, 26(2):1204-1212.

Chuang P H, Lin C C, Liu R S. Emission-tunable CuInS2/ZnS quantum dots: Structure, optical properties, and application in white light-emitting diodes with high color rendering index [J]. Appl. Mater. Interf., 2014, 6(17):15379-15387.

Uehara M, Watanabe K, Tajiri Y, et al. Synthesis of CuInS2 fluorescent nanocrystals and enhancement of fluorescence by controlling crystal defect [J]. J. Chem. Phys., 2008, 129(13):134709-1-6.

Kim Y K, Ahn S H, Chung K, et al. The photoluminescence of CuInS2 nanocrystals: Effect of non-stoichiometry and surface modification [J]. J. Mater. Chem., 2012, 22:1516-1520.

Chen B K, Zhong H Z, Zhang W Q, et al. Highly emissive and color-tunable CuInS2-based colloidal semiconductor nanocrystals: Off-stoichiometry effects and improved electroluminescence performance [J]. Adv. Funct. Mater., 2012, 22:2081-2088.

Dai M L, Ogawa S, Kameyama T, et al. Tunable photoluminescence from the visible to near-infrared wavelength region of nonstoichiometric AgInS2 nanoparticles [J]. J. Mater. Chem., 2012, 22:12851-12858.

Deng D W, Yu J S. Photoluminescence properties of citrate-stabilized water-soluble CdSe and CdSe/CdS quantum dots [J]. Chin. J. Inorg. Chem.(无机化学学报), 2008, 24(5):701-707 (in Chinese).

Qu L Z, Chen Z Q, Deng D W, et al. Oil-soluble CuInS2/ZnS quantum dots and water transfer using temperature-sensitive poly (N-isopropylacrylamide-co-aerylamide-co-octadecyl acrylatel) micelle [J]. Chin. J. Inorg. Chem (无机化学学报), 2013, 29(7):1361-1368 (in Chinese).

Views

142

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Novel Eu²⁺-Activated Apatite Single-Host White-Emitting Phosphors

Related Author

ZHANG Liping

GAO Chengyan

SHI Qiufeng

GUO Haijie

WANG Lei

HUANG Ping

QIAO Jianwei

Related Institution

College of Physics and Optoelectronic Engineering， Taiyuan University of Technology

Department of Physics， Taiyuan Normal University

AI问答

Address：No.3888 Dong Nanhu Road, Changchun, Jilin, China Postal code：130033
Tel：0431-86176862 Email：fgxbt@126.com
Technical support is provided by Beijing Founder electronics co., LTD 吉ICP备11002662号-17 京公网安备11010802024621
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰