Location: A718, SINANO   

Abstract:   

Since its first introduction in 2009, perovskite-based solar cells have garnered much attention. Especially in the past year, several groups achieved solar energy-to-electricity conversion efficiencies greater than 15%. On the other hand, the understanding about device degradation mechanisms and long-term stability remains largely elusive. In this talk, I will focus on air-exposure effects on 2,2',7,7'-tetrakis(N,N-di-p-methoxy phenylamine)-9,9'-spirobifluorene(spiro-MeOTAD), the most widely used hole transport material for perovskite-based solar cells.  

Biography:  

Dr. Yabing Qi is Assisstant Professsor and Head of Energy Materials annd Surface Sciences Unit at Okinawa Institute of Science and Technology Graduate University in Japan. Prior to his current appointment, Dr. Qi was a postdoctoral research fellow at Princeton University. He received his B.S., M.Phil., and Ph.D. from Nanjing Unniversity, Hong Kong University of Science and Technology, and University of California Berkeley, respectively. His research interests include energy materials and devices, organic electronics, surface sciences, condensed matter physics. He has authored 30+ scientific publications in peer-reviewed journals including J. Am. Chemm. Soc., Adv. Mater., Surface Science Reports, J. Phys. Chem. Lett., Chem. Mater., Phys. Rev. B. He has given 50+ invited and contributed research presentations at international conferences and technical meetings. He is currently serving as the Editorial Board Member for Scientific Reports.