Effects of hole-injection through side-walls of large V-pits on efficiency droop in III–nitride LEDs
Zhang Dong-Yan1, 2, †, Zhang Jie3, Liu Xiao-Feng1, 2, Chen Sha-Sha1, 2, Li Hui-Wen1, 2, Liu Ming-Qing1, 2, Ye Da-Qian1, 2, Wang Du-Xiang1, 2
       

(a) EL spectra of samples A, B, and C at driving current densities of (a) 25 A/cm2, (b) 60 A/cm2, and (c) 100 A/cm2.