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Title: A Victim of Halide Ion Segregation. How Light Soaking Affects Solar Cell Performance of Mixed Halide Lead Perovskites

Photoinduced segregation in mixed halide perovskites has a direct influence on decreasing the solar cell efficiency as segregated I-rich domains serve as charge recombination centers. Here, the changes in the external quantum efficiency mirror the spectral loss in the absorption; however, the time scale of the IPCE recovery in the dark is slower than the absorption recovery, showing the intricate nature of the photoinduced halide segregation and charge collection in solar cell devices.
Authors:
 [1] ; ORCiD logo [2] ; ORCiD logo [3]
  1. Univ. of Notre Dame, Notre Dame, IN (United States); Univ. of Szeged, Szeged (Hungary); MTA-SZTE "Lendulet" Photoelectrochemistry Research Group, Szeged (Hungary)
  2. Univ. of Szeged, Szeged (Hungary); MTA-SZTE "Lendulet" Photoelectrochemistry Research Group, Szeged (Hungary)
  3. Univ. of Notre Dame, Notre Dame, IN (United States)
Publication Date:
Grant/Contract Number:
FC02-04ER15533
Type:
Published Article
Journal Name:
ACS Energy Letters
Additional Journal Information:
Journal Volume: 2; Journal Issue: 8; Journal ID: ISSN 2380-8195
Publisher:
American Chemical Society (ACS)
Research Org:
Univ. of Notre Dame, Notre Dame, IN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY
OSTI Identifier:
1372954
Alternate Identifier(s):
OSTI ID: 1415023