照明工程学报2017，Vol.28Issue(1)：5-9,5.DOI:10.3969∕j.issn.1004-440X.2017.01.002
量子阱宽度对蓝光LED性能影响的研究
Effect of Quantum Well Width on the Performance of Blue LEDs
摘要
Abstract
The blue light emitting diode ( LED) with quantum well structure is studied by the method of device simulation. The results indicate:with the increases of the width of the quantum well, the turn-on voltage increases; when the well width is 5 nm, the largest brightness can be obtained, but the emission spectrum is in the orange region and the luminescent efficiency is low;the largest luminescent efficiency can be obtained when the well width is between 2. 5 to 3. 5 nm, and the emission spectrum is within the blue range;when the quantum well width is constant, the spectrum undergoes blue shift when with the bias voltage increases. We also analyzed the reasons of the lower efficiency and emission spectrum shift: the different states of the bound states are responsible for the blue shift of the spectra, and the enhancement of the Auger recombination is the main reason for the decrease of the device efficiency.关键词
蓝光LED/光电性能/器件仿真/量子阱Key words
blue LED/optical electric characteristics/device simulation/quantum well分类
信息技术与安全科学引用本文复制引用
吴月芳,郭伟玲,陈艳芳,雷亮..量子阱宽度对蓝光LED性能影响的研究[J].照明工程学报,2017,28(1):5-9,5.基金项目
国家863资助项目 (2015AA033304), 16教师队伍建设-青年拔尖项目 (市级) (2000543116503) （2015AA033304）
