Prof. Xiao received his Ph. D. degree in physics at the University of California at Berkeley in 1992. After his further training in the Lawrence Berkeley National Laboratory as a post doctorate fellow, he joined the Department of Physics at the Hong Kong University of Science and Technology in 1994, where he directed his research in surface science and nano science with both optical techniques and scanning probe microscopies. In 2007, Prof. Xiao moved to the Chinese University of Hong Kong and branched his research to photovoltaic solar energy. He is a recipient of the Outstanding Yong Scientist Fund, Chinese National Science Foundation, 2004 and Prof. Xiao received his Ph. D. degree in physics at the University of California at Berkeley in 1992. After his further training in the Lawrence Berkeley National Laboratory as a post doctorate fellow, he joined the Department of Physics at the Hong Kong University of Science and Technology in 1994, where he directed his research in surface science and nano science with both optical techniques and scanning probe microscopies. In 2007, Prof. Xiao moved to the Chinese University of Hong Kong and branched his research to photovoltaic solar energy. He is a recipient of the Outstanding Yong Scientist Fund, Chinese National Science Foundation, 2004 and an awardee of “Thousand Talents Scheme”,China, 2010. Prof. Xiao has made various contribution to surface science, nano science and renewable energy science and engineering, including inventing linear optical diffraction method for detecting submonolayer surface diffusion, discovery of room temperature “ice-like” water structure, developing quantitative tribology at nanoscales, experimentally demonstrating quantum capacitance of nano-junctions, discovery of pseudogap state in the nano-island of conventional superconductors, and successful fabrication of the best efficiency Cu(InGa)Se2 solar cell in Great China Region. In addition to the lab device fabrication and physics study of various thin film solar cells, Prof. Xiao is also leading a team to develop instrumentation and production lines for manufacture Cu(InGa)Se2 thin film solar panels in China.

Topic: Actively control the energy bandgap grading of light absorber in Cu(InGa)Se2 solar cells