Browsing by Author "Xu, Huan"

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Emission dynamics of GaN-based blue resonant-cavity light-emitting diodes
(2019-12-01)
Xu, Rong-Bin
;
Xu, Huan
;
Mei, Yang
;
Shi, Xiao-Ling
;
Ying, Lei-Ying
We fabricated GaN-based blue resonant-cavity light-emitting diodes (RCLEDs) by inserting InGaN quantum well (QW) active region between two dielectric distributed Bragg reflectors (DBRs). Due to the different gain enhancement factors in a single device, multi-longitudinal modes were observed and tuned with changing the injection current density: pure-blue (PB) at low current density, violet-blue (VB) at intermediate current density, and PB again at high current density. The variation of emission spectra is explained by the competition between band-filling effect and self-heating effect.