Enhanced Structural Stability and Photo Responsiveness of CH3NH3SnI3 Perovskite via Pressure-Induced Amorphization and Recrystallization
Xujie L\"u, Yonggang Wang, Constantinos C. Stoumpos, Qingyang Hu,, Xiaofeng Guo, Haijie Chen, Liuxiang Yang, Jesse S. Smith, Wenge Yang, Yusheng, Zhao, Hongwu Xu, Mercouri G. Kanatzidis, and Quanxi Jia
TL;DR
This study demonstrates that pressure-induced amorphization and recrystallization significantly enhance the structural stability, electrical conductivity, and light responsiveness of CH3NH3SnI3 perovskite, promising improved optoelectronic applications.
Contribution
The paper introduces a novel pressure treatment method that improves stability and optoelectronic performance of CH3NH3SnI3 perovskite, which was not previously achieved.
Findings
Electrical conductivity increased by 300% after pressure treatment.
Enhanced visible-light responsiveness observed in photocurrent measurements.
Structural stability of perovskite significantly improved through pressure-induced processes.
Abstract
An organic-inorganic halide perovskite of CH3NH3SnI3 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 demonstrated to be associated with the improved structural stability.
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