Zongyu Huang1,2, Weijia Han1,2, Hongli Tang1, Long Ren1, D. Sathish Chander2, Xiang Qi1,2, Han Zhang2
1Hunan Provincial Key Laboratory of Micro-Nano Energy Materials and Devices, Xiangtan University, Hunan 411105, People’s Republic of China
2Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, People’s Republic of China