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Photoinduced phase segregation and degradation of perovskites revealed by x-ray photoelectron spectroscopy

Felix, Roberto ; Rehermann, Carolin ; Liu, Dongyang ; Handick, Evelyn ; Hartmann, Claudia ; Wilks, Regan G. ; Unger, E. LU and Bar, Marcus (2019) 46th IEEE Photovoltaic Specialists Conference, PVSC 2019 In Conference Record of the IEEE Photovoltaic Specialists Conference p.2362-2367
Abstract

Pb-based perovskite absorbers with organic (i.e., CH3NH3+) and inorganic (i.e., Cs+) cations and a halide composition of 75% Br and 25% I are investigated with x-ray photoelectron spectroscopy while submitted to environmental stress factors to study their stability. Changes in chemical properties of the absorbers were monitored in ultra-high vacuum and under simulated solar, as well as, x-ray irradiation. Although changes are detected for both types of perovskite absorbers, the organic cation perovskite exhibits a more pronounced tendency to photodegrade.

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author
; ; ; ; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
chemical structure, halide hybrid organic-inorganic perovskite absorbers, halide inorganic perovskite absorbers, thin-film photovoltaic cells, x-ray photoelectron spectroscopy
host publication
2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019
series title
Conference Record of the IEEE Photovoltaic Specialists Conference
article number
8980746
pages
6 pages
publisher
Institute of Electrical and Electronics Engineers Inc.
conference name
46th IEEE Photovoltaic Specialists Conference, PVSC 2019
conference location
Chicago, United States
conference dates
2019-06-16 - 2019-06-21
external identifiers
  • scopus:85081560459
ISSN
0160-8371
ISBN
9781728104942
DOI
10.1109/PVSC40753.2019.8980746
language
English
LU publication?
yes
id
ac7a0875-a620-460b-8e7a-a1812452fd28
date added to LUP
2020-03-30 13:43:04
date last changed
2020-04-02 02:49:46
@inproceedings{ac7a0875-a620-460b-8e7a-a1812452fd28,
  abstract     = {<p>Pb-based perovskite absorbers with organic (i.e., CH<sub>3</sub>NH<sub>3</sub><sup>+</sup>) and inorganic (i.e., Cs<sup>+</sup>) cations and a halide composition of 75% Br and 25% I are investigated with x-ray photoelectron spectroscopy while submitted to environmental stress factors to study their stability. Changes in chemical properties of the absorbers were monitored in ultra-high vacuum and under simulated solar, as well as, x-ray irradiation. Although changes are detected for both types of perovskite absorbers, the organic cation perovskite exhibits a more pronounced tendency to photodegrade.</p>},
  author       = {Felix, Roberto and Rehermann, Carolin and Liu, Dongyang and Handick, Evelyn and Hartmann, Claudia and Wilks, Regan G. and Unger, E. and Bar, Marcus},
  booktitle    = {2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019},
  isbn         = {9781728104942},
  issn         = {0160-8371},
  language     = {eng},
  pages        = {2362--2367},
  publisher    = {Institute of Electrical and Electronics Engineers Inc.},
  series       = {Conference Record of the IEEE Photovoltaic Specialists Conference},
  title        = {Photoinduced phase segregation and degradation of perovskites revealed by x-ray photoelectron spectroscopy},
  url          = {http://dx.doi.org/10.1109/PVSC40753.2019.8980746},
  doi          = {10.1109/PVSC40753.2019.8980746},
  year         = {2019},
}