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This content will become publicly available on August 12, 2017

Title: Enhanced structural stability and photo responsiveness of CH3NH3SnI3 perovskite via pressure-induced amorphization and recrystallization

An organic–inorganic halide CH3NH3SnI3 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. In conclusion, the mechanism underlying the enhanced properties is shown to be associated with the pressure-induced structural modification.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [3] ;  [5] ;  [5] ;  [4] ;  [6] ;  [1] ;  [3] ;  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of Nevada, Las Vegas, NV (United States); Carnegie Institution of Washington, Argonne, IL (United States)
  3. Northwestern Univ., Evanston, IL (United States)
  4. Carnegie Institution of Washington, Argonne, IL (United States); Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai (China)
  5. Carnegie Institution of Washington, Argonne, IL (United States)
  6. Univ. of Nevada, Las Vegas, NV (United States); Southern Univ. of Science and Technology, Shenzhen (China)
Publication Date:
OSTI Identifier:
1331268
Report Number(s):
LA-UR--15-29677
Journal ID: ISSN 0935-9648
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 28; Journal Issue: 39; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE material science; solar cells; high pressure