Guoqing Tong received Ph.D. degree in Electronic Science and Technology from Nanjing University, in 2017. 2018-2021, Dr.Tong works at the Energy Materials and Surface Sciences Unit, Okinawa Institute of Science and Technology (OIST). Since 2022, Dr. Guoqing works at Hefei University of Technology (HFUT) as a full Professor. He focus on the semiconductor optoelectronic devices such as solar cells, photodetectors and light-emitting diodes.