Xinyuan Wu is a PhD student in the School of Photovoltaic and Renewable Energy Engineering (SPREE) at UNSW Sydney. In 2017, he received his bachelor degree in Opto-electronics Information Science and Engineering from Changchun University of Science and Technology (CUST), China. From 2018 to 2020, he studied Photovoltaics and Solar Energy in SPREE. During his master project, he worked with Shaozhou Wang in black silicon surface passivation simulation and was supervised by Professor Bram Hoex. After he got his master degree, he returned to UNSW Hoex Group for his PhD study. Currently, he is focusing on the degradation research of the PV module, especially the Light and elevated Temperature Induced Degradation(LeTID) of the Tunnel Oxide Passivated Contact (TOPCon) solar celsl.