Efficiency droop suppression in GaN-based light-emitting diodes by chirped multiple quantum well structure at high current injection*
Zhao Yu-Kuna),b), Li Yu-Fenga),b), Huang Ya-Pinga),b), Wang Honga),b), Su Xi-Linc), Ding Wena),b), Yun Fenga),b),c)†
       
Energy band diagrams of LEDs with (a) uniform MQWs, (b) chirped MQWs-a, and (c) chirped MQWs-b structures at 600 mA/mm2.