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.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
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~~
关键词
量子点
固态照明
quantum dot
solid-state light
white-light-emitting diodes
