Single-source, solvent-free, room temperature deposition of black $\gamma$-CsSnI${}_3$ films

Vivien M. Kiyek, Yorick A. Birkhölzer, Yury Smirnov +7

The presence of a non-optically active polymorph (yellow-phase) competing with the optically active polymorph (black $\gamma$-phase) at room temperature in CsSnI3 and the susceptibility…