半导体量子点在白光LED器件上的应用研究

高小钦; 卓宁泽; 王海波; 崔一平; 张家雨

doi:10.7498/aps.64.137801

摘要

以CdSe, CuInS2和CdS:Mn量子点为例, 本文基于量子点白光LED器件的电光转换过程, 引入量子点的类光谱光效率函数, 给出了该器件的色坐标、光效和量子点配比等计算公式, 理论计算结果和实验结果基本一致. 研究结果表明量子点的荧光峰位和峰宽对白光器件的显色指数有显著影响.

关键词:

量子点 /
固态照明 /
白光LED

Based on the electro-optical energy transfer process, the pseudo-spectral-luminous efficiency function (QD) of quantum dots (QDs) is introduced, the equations of chromaticity coordinates, luminous efficiency, and the QDs' mass of the white-light-emitting devices with CdSe, CuInS2 or CdS:Mn QDs are obtained, and the calculated results are in agreement with the experimental data. For a certain luminescent peak wavelength, when the full width at half maximum of the QD's photoluminescence becomes larger, the QD value becomes smaller while the chromaticity coordinates become more different from those of the corresponding monochromatic light. It is indicated that the color rendering index (CRI) of the devices is strongly dependent on the photoluminescent position and width of the QDs, and the CRI value can be increased towards 98 when a certain kind of CdS:Mn QDs is added into the traditional white-light LEDs.

Keywords:

作者及机构信息

1.
东南大学电子科学与工程学院, 先进光子学中心, 南京 210096;

2.
南京工业大学电光源材料研究所, 南京 210015

基金项目: 国家重点基础研究发展计划(973计划)(批准号:2012CB921801)和江苏省科技支撑计划(批准号:BE2012163)资助的课题.

Authors and contacts

1.
School of Electronic Science and Engineering, Advanced Photonics Center, Southeast University, Nanjing 210096, China;

2.
Research Institute of Electric Light Source Materials, Nanjing University of Technology, Nanjing 210015, China

Funds: Project supported by the National Basic Research Program of China (Grant No. 2012CB921801), and the Science and Technology Department of JiangSu Province, China (Grant No. BE2012163).

参考文献

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[9]	Kim J U, Kim Y S, Yang H 2009 Materials Letters 63 614
[10]	Wang X B, Yan X S, Li W W, Sun K 2012 Adv. Mater. 24 2742
[11]	Fang D F, Ding X, Dai R C, Zhao Z, Wang Z P, Zhang Z M 2014 Chin. Phys. B 23 127804
[12]	Xing G C, Chakrabortty S, Chou K L, Mishra N, Huan C H A, Chan Y, Sum T C 2010 Appl. Phys. Lett. 97 061112
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施引文献

[1]	Liu M Q 2013 LED and Its Application Technology (Beijing:Chemical Industry Press) p15-19, 95-97 (in Chinese) [刘木清 2013 LED 及其应用技术 (北京: 化学工业出版社) 第15-19, 95-97页]
[2]	Schubert E F, Kim J K 2005 Science 308 1274
[3]	Chung W, Yu H J, Park S H, Chun B H, Kim S H 2011 Materials Chemistry and Physics 126 162
[4]	Lin C C, Liu R S 2011 J. Phys. Chem. Lett. 2 1268
[5]	Zhang H C, Ye Y H, Zhang J Y, Cui Y P, Yang B P, Shen L 2012 J. Phys. Chem. C 116 15660
[6]	Lee J, Sundar V C, Heine J R, Bawendi M G, Jensen K F 2000 Adv. Mater. 12 1102
[7]	Chen B K, Zhong H Z, Wang M X, Liu R B, Zou B S 2013 Nanoscale 5 3514
[8]	Song W S, Yang H 2012 Chem. Mater. 24 1961
[9]	Kim J U, Kim Y S, Yang H 2009 Materials Letters 63 614
[10]	Wang X B, Yan X S, Li W W, Sun K 2012 Adv. Mater. 24 2742
[11]	Fang D F, Ding X, Dai R C, Zhao Z, Wang Z P, Zhang Z M 2014 Chin. Phys. B 23 127804
[12]	Xing G C, Chakrabortty S, Chou K L, Mishra N, Huan C H A, Chan Y, Sum T C 2010 Appl. Phys. Lett. 97 061112
[13]	Li M, Sheng Y 2008 Spectroscopy and Spectral Analysis 28 2352 (in Chinese) [李敏, 盛毅 2008 光谱学与光谱分析 28 2352]
[14]	Hazarika A, Pandey A, Sarma D D 2014 J. Phys. Chem. Lett. 5 2208
[15]	Nag A, Cherian R, Mahadevan P, Gopal A V, Hazarika A, Mohan A, Vengurlekar A S, Sarma D D 2010 J. Phys. Chem. C 114 18323
[16]	Jing Q C, Jiao Q C, Yu B L, Hu W S 1979 Colourometry (Beijing: Science Press) p91-93 (in Chinese) [荆其诚, 焦书兰, 喻柏林, 胡维生 1979 色度学 (北京: 科学出版社) 第91-93页]
[17]	Wu Q, Huang X, Liu L, Wang J, Chu M H, Zhang L G, Hou F Q, Liu X Y, Zhao C J, Fan Y, Luo J S, Jiang D P 2007 Chinese Journal of Luminescence 28 736 (in Chinese) [吴庆, 黄先, 刘丽, 王健, 褚明辉, 张立功, 侯凤勤, 刘学彦, 赵成久, 范翊, 罗劲松, 蒋大鹏 2007 发光学报 28 736]
[18]	Stewart A F, Bass M 1980 Appl. Phys. Lett. 37 1040
[19]	Zhang J M, Zhang X K, Zhang J Y 2009 J. Phys. Chem. C 114 3904
[20]	Yang B P, Shen X C, Zhang H C, Cui Y P, Zhang J Y 2013 J. Phys. Chem. C 117 15829
[21]	Leatherdale C A, Woo W K, Mikulec F V, Bawendi M G 2002 J. Phys. Chem. B 106 7619

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