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Title: Electrochemistry and Spectroelectrochemistry of Lead Halide Perovskite Films: Materials Science Aspects and Boundary Conditions

Abstract

The unique optoelectronic properties of lead halide perovskites have triggered a new wave of excitement in materials chemistry during the past five years. Electrochemistry, spectroelectrochemistry, and photoelectrochemistry could be viable tools both for analyzing the optoelectronic features of these materials and for assembling them into hybrid architectures (e.g., solar cells). At the same time, the instability of these materials limits the pool of solvents and electrolytes that can be employed in such experiments. The focus of our study is to establish a stability window for electrochemical tests for all-inorganic CsPbBr3 and hybrid organic–inorganic MAPbI3 perovskites. In addition, we aimed to understand the reduction and oxidation events that occur and to assess the damage done during these processes at extreme electrochemical conditions. In this vein, we demonstrated the chemical, structural, and morphological changes of the films in both reductive and oxidative environments. Taking all these results together as a whole, we propose a set of boundary conditions and protocols for how electrochemical experiments with lead halide perovskites should be carried out and interpreted. The presented results will contribute to the understanding of the electrochemical response of these materials and lead to a standardization of results in the literature so that comparisonsmore » can more easily be made.« less

Authors:
 [1];  [2]; ORCiD logo [2]; ORCiD logo [3]
  1. Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States, Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Square 1, Szeged, H-6720, Hungary
  2. Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556, United States, Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
  3. Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Square 1, Szeged, H-6720, Hungary, ELI-ALPS Research Institute, Szeged, Dugonics sq. 13, 6720, Hungary
Publication Date:
Research Org.:
Univ. of Notre Dame, IN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1413570
Alternate Identifier(s):
OSTI ID: 1508278
Grant/Contract Number:  
FC02-04ER15533
Resource Type:
Published Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Name: Chemistry of Materials Journal Volume: 30 Journal Issue: 3; Journal ID: ISSN 0897-4756
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Samu, Gergely F., Scheidt, Rebecca A., Kamat, Prashant V., and Janáky, Csaba. Electrochemistry and Spectroelectrochemistry of Lead Halide Perovskite Films: Materials Science Aspects and Boundary Conditions. United States: N. p., 2017. Web. doi:10.1021/acs.chemmater.7b04321.
Samu, Gergely F., Scheidt, Rebecca A., Kamat, Prashant V., & Janáky, Csaba. Electrochemistry and Spectroelectrochemistry of Lead Halide Perovskite Films: Materials Science Aspects and Boundary Conditions. United States. doi:10.1021/acs.chemmater.7b04321.
Samu, Gergely F., Scheidt, Rebecca A., Kamat, Prashant V., and Janáky, Csaba. Fri . "Electrochemistry and Spectroelectrochemistry of Lead Halide Perovskite Films: Materials Science Aspects and Boundary Conditions". United States. doi:10.1021/acs.chemmater.7b04321.
@article{osti_1413570,
title = {Electrochemistry and Spectroelectrochemistry of Lead Halide Perovskite Films: Materials Science Aspects and Boundary Conditions},
author = {Samu, Gergely F. and Scheidt, Rebecca A. and Kamat, Prashant V. and Janáky, Csaba},
abstractNote = {The unique optoelectronic properties of lead halide perovskites have triggered a new wave of excitement in materials chemistry during the past five years. Electrochemistry, spectroelectrochemistry, and photoelectrochemistry could be viable tools both for analyzing the optoelectronic features of these materials and for assembling them into hybrid architectures (e.g., solar cells). At the same time, the instability of these materials limits the pool of solvents and electrolytes that can be employed in such experiments. The focus of our study is to establish a stability window for electrochemical tests for all-inorganic CsPbBr3 and hybrid organic–inorganic MAPbI3 perovskites. In addition, we aimed to understand the reduction and oxidation events that occur and to assess the damage done during these processes at extreme electrochemical conditions. In this vein, we demonstrated the chemical, structural, and morphological changes of the films in both reductive and oxidative environments. Taking all these results together as a whole, we propose a set of boundary conditions and protocols for how electrochemical experiments with lead halide perovskites should be carried out and interpreted. The presented results will contribute to the understanding of the electrochemical response of these materials and lead to a standardization of results in the literature so that comparisons can more easily be made.},
doi = {10.1021/acs.chemmater.7b04321},
journal = {Chemistry of Materials},
number = 3,
volume = 30,
place = {United States},
year = {2017},
month = {12}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1021/acs.chemmater.7b04321

Citation Metrics:
Cited by: 14 works
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Works referencing / citing this record:

Spectroelectrochemical Sensing: Current Trends and Challenges
journal, November 2018

  • Garoz‐Ruiz, Jesus; Perales‐Rondon, Juan Victor; Heras, Aranzazu
  • Electroanalysis, Vol. 31, Issue 7
  • DOI: 10.1002/elan.201900075

Spectroelectrochemical Sensing: Current Trends and Challenges
journal, November 2018

  • Garoz‐Ruiz, Jesus; Perales‐Rondon, Juan Victor; Heras, Aranzazu
  • Electroanalysis, Vol. 31, Issue 7
  • DOI: 10.1002/elan.201900075