Borong Sang is a PhD candidate in School of Photovoltaic and Solar Energy Engineering(SPREE) in UNSW, working in A/Pro Bram Hoex’s group.  He received his Bachelor of Engineering at Nanjing University of Science and Technology in 2015, studying Material Science and Engineering; during which his interests lied in the research of nanomaterial and technology. He successfully applied pulsed electro-deposition approach to prepare Ni-P alloy amorphous thin film in nano-size (<30nm). At the same time, he built a good knowledge in the field of semiconductor technologies. From 2016 to 2017, he completed his Master degree by coursework in SPREE at UNSW studying Photovoltaics & Solar Energy and graduated with excellence.  During his final year’s thesis in postgraduate study, he investigated the temperature dependence of I-V and EQE of Multi-crystalline silicon PERC cells using state-of-the-art LED-based solar simulator from WAVELABS. Now, Borong starts to investigate the utilisation of metal oxide layers, prepared using Atomic Layer Deposition(ALD) system, in passivating contacts of solar cells, especially for electron selective contacts – aiming at improving the efficiency of cells. Materials(metals) involved in this project are but not limited to Ti, Ta, Nb which are ideal for electron selective contacts for their high work functions. ALD technology is proposed to be applied in this project for its ultimate control of thickness and composition of ultrathin layers, as well as low pinhole densities in the material. ALD is suitable for very large areas and batch sizes, which means that the lab result could be applied to an industry level quickly.