[Seminar] Synthesis of CH3NH3SnI3 Synthesis of CH3NH3SnI3 perovskite films by reaction of Sn metallic film with CH3NH3I vapor" and a method to assess the "Degradation kinetics of Perovskite solar cells exposed to H2O or O2

Short Bio

1991/11: PhD, Material Science (Bordeaux Uni.+ CNRS, France) .

1992/1~5: Thomson LCC company, R&D department (France).

1992/7~present: AIST (post-doc  permanent staff)

2010-2011: Dispatched to AIST International Office (in charge of collaborations, MOU, etc.).

Research interests:

1992~2013: Carbon materials (Fullerene, nanotube, graphene) for optoelectronics / photovoltaics 

2013~ present: Perovskite Solar cells (involved in CEREBA consortium, 2 NEDO projects)

Lecture-Abstract

Part 1: Sn-based perovskite solar cells (PSCs) are of great interest to overcome the toxicity issue posed by Pb-based perovskite. For instance, CH₃NH₃SnI₃ (MASnI₃) are often synthesized by the reaction of SnI₂ and CH₃NH₃I (MAI) dissolved in organic solutions with various additives to prevent the oxidation of Sn²⁺ into Sn⁴⁺, which are known to hamper the performance of the solar cells. Here, I will present a new technique to synthesize CH₃NH₃SnI₃ from thin layers of metallic Sn exposed to MAI vapor, based on our previous experience on the synthesis of CH₃NH₃PbI₃ (MAPbI₃) by reaction of Pb thin film in presence of CH₃NH₃I+I₂.

Host: 

Prof. Yabing Qi, Energy Materials and Surface Sciences Unit (Qi unit)