半导体量子点在白光LED器件上的应用研究  

Application of semiconductor quantum dots no white-light-emitting diodes

作　　者：高小钦[1] 卓宁泽[2] 王海波[2] 崔一平[1] 张家雨[1] 

机构地区：[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

出　　处：《物理学报》2015年第13期388-393,共6页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(973计划)(批准号:2012CB921801);江苏省科技支撑计划(批准号:BE2012163)资助的课题~~

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.Based on the electro-optical energy transfer process, the pseudo-spectral-luminous e？ciency function （ΦQD） of quantum dots （QDs） is introduced, the equations of chromaticity coordinates, luminous e？ciency, 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, theΦQD 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.

关 键 词：量子点 固态照明 

分 类 号：O471.1[理学—半导体物理]