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Published on: September 8, 2017
Enhanced Structural Stability and Photo Responsiveness of CH3 NH3 SnI3 Perovskite via Pressure-Induced Amorphization
Xujie Lü1,2, Yonggang Wang3,4, Constantinos C Stoumpos5
1Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
Abstract:
An organic-inorganic halide CH3 NH3 SnI3 perovskite with significantly improved structural stability is obtained via pressure-induced amorphization and recrystallization. In situ high-pressure resistance measurements reveal an increased electrical conductivity by 300% in the pressure-treated perovskite. Photocurrent measurements also reveal a substantial enhancement in visible-light responsiveness. The mechanism underlying the enhanced properties is shown to be associated with the pressure-induced structural modification.
