Qi Wang

Recently the standard back surface field (BSF) p-type monocrystalline silicon solar cells were significantly replaced by the passivated emitter rear contact (PERC) solar cells in large volume. PERC solar cells appear successfully migrating from lab’s development to factory manufacturing. The story is unfolded with solutions of passivated-layer equipment for mass production, light induced degradation, and p-type wafer quality. At mass production, the average solar cell efficiency is over 21%. The average module wattage of 60 cells (6”) achieves over 300W.

Dr. Qi Wang serves as Chief Scientist at Jinko Solar. He was Chief Scientist at GCL system integration and a PV consultant at ENN. He worked at National Renewable Energy Laboratory (NREL) for 19 years. At NREL, he was a Principal Scientist and Si Group Manager of the National Center for Photovoltaic; and principal investigator of the wafer Si agreement at NREL for the Department of Energy. He received his B.S. in physics from Peking University, China and Ph.D. in solid state physics from Syracuse University, US. He has over 27 years’ experience in solar cell fabrication, materials and devices characterization, device physics, and design and thin-film deposition research tools. He has worked on hydrogenated amorphous silicon, organic/inorganic hybrid, thin c-Si, and especially high efficiency c-Si heterojunction devices.

Thie seminar is co-sponsored by Quantum Energy and Sustainable Solar Technologies (QESST).. Contact: Margie Creedon, ASU LightWorks, Margie.Creedon@asu.edu.