| 半导体量子点在白光LED器件上的应用研究 |
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| 引用本文： | 高小钦,卓宁泽,王海波,崔一平,张家雨.半导体量子点在白光LED器件上的应用研究[J].物理学报,2015,64(13):137801-137801. |
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| 作者姓名： | 高小钦 卓宁泽 王海波 崔一平 张家雨 |
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| 作者单位： | 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 |
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| 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. |
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| 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.
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| 关 键 词： | 量子点 固态照明 白光LED |
| 收稿时间： | 2014-11-28 |
Application of semiconductor quantum dots to white-light-emitting diodes |
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| Gao Xiao-Qin,Zhuo Ning-Ze,Wang Hai-Bo,Cui Yi-Ping,Zhang Jia-Yu.Application of semiconductor quantum dots to white-light-emitting diodes[J].Acta Physica Sinica,2015,64(13):137801-137801. |
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| Authors: | Gao Xiao-Qin Zhuo Ning-Ze Wang Hai-Bo Cui Yi-Ping Zhang Jia-Yu |
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| Institution: | 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 |
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| Abstract: | Based on the electro-optical energy transfer process, the pseudo-spectral-luminous efficiency function (ΦQD) 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 ΦQD 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. |
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| Keywords: | quantum dot solid-state light white-light-emitting diodes |
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