中文摘要：

Zhuo Deng obtained his B.Sc. and Ph.D. degrees in the Department of Physics from the University of Hong Kong in 2010 and 2015, respectively. After finishing his Ph. D. study, he worked as a research assistant at the Laser Spectroscopy Laboratory of the University of Hong Kong. His research interests include the luminescence properties and transport processes of charge carriers in novel optoelectronic materials and structures, in particular the III-V alloy compound photovoltaic devices. He is currently working as a research engineer at GP Electronics （HK） Ltd. Jiqiang Ning received his B.S. degree in 2000 and M.E. degree in 2003, both from The University of Science and Technology of China, and Ph.D. degree from The University of Hong Kong in 2008. His research interests include spectroscopic techniques and optical/electronic characterization of semiconductor materials and devices. He is a winner of the ＂Hundred Talents Program A＂ （2015） of the Chinese Academy of Sciences （CAS）, and now works as a professor at Suzhou Institute of Nano- Tech and Nano-Bionics, CAS. Rongxin Wang earned her Ph.D. degree in Physics Department from The University of Hong Kong in 2005. Then she worked in The Hong Kong Polytechnic University as Postdoctoral Research Fellow. Currently she holds a professorship in Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences. She has been published more than 30 SCI papers in peer-reviewed international journals such as Applied Physics Letters, Nanotechnology, Journal of Applied Physics, Solar Energy Materials and Solar Cells, and J. Micromech. Microeng. etc. Her research interest and approach are related to novel wide band gap semiconductor devices and nano-structures for practical applica- tions. Prof. Wang＇s outstanding works and important contributions include the invention of TiNi thin-film shape memory alloy based microtweezers by utilizing the residual stress in the thin films as the ＂external＂ force load for device training and operation, systemat