关于举行香港城市大学Sai-Wing Tsang 教授学术报告的通知

报告题目：Advanced Characterization Technique for Organic and Perovskite Solar Cells

报告人： Prof. Sai-Wing Tsang (City University of Hong Kong)

报告时间：2016年7月5日（周二）上午10:30

报告地点：北区光电国重 502会议室

欢迎广大师生踊跃参加。

报 告摘要：

Organic and perovskite solar cells are two emerging solar technologies with high potential for various light harvesting applications. Besides the encouraging achievement of efficiency have been demonstrated recently, there are interesting science in both classes of materials still under explored. Understanding those fundamental device physics and material properties would definitely sheds light on limitations and hints for further development, particularly the electronic structure and recombination dynamics.

In this talk, I will introduce some recent development of advanced characterization techniques in our group. We have successfully employed non-linear optic to modulate the electroabsorption in donor-acceptor type bulk heterojunction device to extract the effective bandgap, which facilitate the understanding of photovoltage loss in organic solar cells. Approaches using electrical method to determine the transporting gap and exciton binding energy will be highlighted. For perovskite, I will highlight our recent work on the study of ion induced degradation and the corresponding recombination processes.

报 告人简介：

Dr Stephen Sai-Wing Tsang is an assistant professor in the department of Physics and Materials Science at the City University of Hong Kong. Dr Tsang received his PhD in 2009 in the Materials Science and Engineering Department at the University of Toronto, Canada. His PhD was focused on developing experimental approaches and models to investigate the charge carrier transport across organic heterojunction, under the supervision of Prof. Zheng-Hong Lu. After his PhD, he joined the National Research Council (NRC) Canada as an Assistant Research Officer to develop solution processed quantum dots for photovoltaic applications. At 2011, he joined Prof. Franky So’s group at the University of Florida as a Postdoc Fellow to develop high efficiency polymer solar cells and investigate the corresponding device physics. Before joining CityU, he joined the Nano and Advanced Materials Institute (NAMI) in Hong Kong as an Assistant Technical Manager in the Energy division to develop CIGS and a-Si photovoltaic cells.

Dr Tsang has published over 50 peer-review papers in prestigious journals including Nature Photonics, Adv. Mater., Adv. Energy Mater., Adv. Funct. Mater., Phys. Rev. B, and Appl. Phys. Lett. etc.
ilver Award from the Materials Research Society (2006).