Variation of efficiency droop with quantum well thickness in InGaN/GaN green light-emitting diode

Liu Wei^a),^c), Zhao De-Gang†^a), Jiang De-Sheng^a), Chen Ping^a), Liu Zong-Shun^a), Zhu Jian-Jun^a), Li Xiang^a), Liang Feng^a), Liu Jian-Ping^b), Yang Hui^a),^b)

Curves of EL peak energy versus injection current for LEDs W7 and W8, denoted by black triangles and red squares, respectively. The inset shows the typical RT EL spectra of LEDs W7 (black lines) and W8 (red lines) at DC forward current I = 0.1 mA. The unit a.u. is short for arbitrary units.