Professor Sam Zhang Shanyong（張善勇）, FRSC, FTFS, FIoMMM, academically known as Sam Zhang, was born and brought up in the famous "City of Mountains" Chongqing, China. He received his Bachelor of Engineering in Materials in 1982 from Northeastern University (Shenyang, China), Master of Engineering in Materials in 1984 from Iron & Steel Research Institute (Beijing, China) and Ph.D. degree in Ceramics in 1991 from The University of Wisconsin-Madison, USA. He was a tenured full professor (since 2006) at the School of Mechanical and Aerospace Engineering, Nanyang Technological University Singapore. Since January 2018, he joined School of Materials and Energy, Southwest University, China. He serves as the founding and current director of the Centre for Advanced Thin Films and Devices.
Speech Title: Stability issues in Perovskite solar cells
Abstract: Recent years has seen much progress in the development of perovskite solar cells especially in increasing conversion efficiency. However without stability no matter how efficient it is, it is never going to be commercially viable. This talk focuses on stability issues concerning perovskite solar cells. The stability issues comes from intrinsic and extrinsic two aspects. Molecular dissociation and ion migrations constitute the intrinsic aspect. The extrinsic factors many concerning the environmental effect, which include moisture, oxygen, and temperature. This talk tries to illustrate how these factors affect cells and their performance, and possible measures to take.