发光二极管
量子效率
光电子学
材料科学
波长
偶极子
电场
电压
p-n结
物理
半导体
量子力学
作者
Sheikh Ifatur Rahman,R. Armitage,Siddharth Rajan
标识
DOI:10.35848/1347-4065/ad07fa
摘要
Abstract Longer wavelength emitters such as green LEDs display a pronounced efficiency drop at higher current densities, resulting in relatively low wall-plug efficiency (WPE). Multi-active region approach can improve the WPE significantly and tackle the “green gap” challenge. This work reports multi-active region p-down LEDs with high external efficiency operating entirely in the green wavelength. Devices were developed using p-down topology, where the PN junction is oriented such that electric fields from depletion and built-in polarization dipoles are aligned. Ga-polar multi-active region green LEDs with excellent voltage and external quantum efficiency scaling, and significantly higher WPE is demonstrated in this work.
科研通智能强力驱动
Strongly Powered by AbleSci AI