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Unveiling the Local Fate of Charge Carriers in Halide Perovskite Thin Films via Correlation Clustering Imaging

Seth, Sudipta LU ; Louis, Boris LU ; Asano, Koki ; Van Roy, Toon ; Roeffaers, Maarten B.J. ; Debroye, Elke ; Scheblykin, Ivan G. LU orcid ; Vacha, Martin and Hofkens, Johan (2025) In Chemical and Biomedical Imaging 3(4). p.244-252
Abstract

As the field of metal halide perovskites matures, a range of compositionally different perovskite films has found a place in efficient optoelectronic devices. These films feature variable local structural stability, carrier diffusion, and recombination, while there is still a lack of easy-to-implement generic protocols for high-throughput characterization of these variable properties. Correlation clustering imaging (CLIM) is a recently developed tool that resolves peculiarities of local photophysics by assessing the dynamics of photoluminescence detected by wide-field optical microscopy. We demonstrate the capability of CLIM as a high-throughput characterization tool of perovskite films using MAPbI3 (MAPI) and triple cation... (More)

As the field of metal halide perovskites matures, a range of compositionally different perovskite films has found a place in efficient optoelectronic devices. These films feature variable local structural stability, carrier diffusion, and recombination, while there is still a lack of easy-to-implement generic protocols for high-throughput characterization of these variable properties. Correlation clustering imaging (CLIM) is a recently developed tool that resolves peculiarities of local photophysics by assessing the dynamics of photoluminescence detected by wide-field optical microscopy. We demonstrate the capability of CLIM as a high-throughput characterization tool of perovskite films using MAPbI3 (MAPI) and triple cation mixed halide (TCMH) perovskites as examples where it resolves the interplay of carrier diffusion, recombination, and defect dynamics. We found significant differences in the appearance of metastable defect states in these two films. Despite a better surface quality and larger grain size, MAPI films showed more pronounced effects of fluctuating defect states than did TCMH films. As CLIM shows a significant difference between materials known to lead to different solar cell efficiencies, it can be considered a tool for quality control of thin films for perovskite optoelectronic devices.

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author
; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
functional imaging, halide perovskites, local photophysics, metastable defects, Structure−function relationship
in
Chemical and Biomedical Imaging
volume
3
issue
4
pages
9 pages
publisher
The American Chemical Society (ACS)
external identifiers
  • pmid:40313532
  • scopus:105003665384
ISSN
2832-3637
DOI
10.1021/cbmi.4c00113
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 The Authors. Co-published by Nanjing University and American Chemical Society.
id
0587f7ff-6c47-48e2-a2dd-f9de05aaa1cc
date added to LUP
2025-08-05 15:17:07
date last changed
2025-08-06 03:00:03
@article{0587f7ff-6c47-48e2-a2dd-f9de05aaa1cc,
  abstract     = {{<p>As the field of metal halide perovskites matures, a range of compositionally different perovskite films has found a place in efficient optoelectronic devices. These films feature variable local structural stability, carrier diffusion, and recombination, while there is still a lack of easy-to-implement generic protocols for high-throughput characterization of these variable properties. Correlation clustering imaging (CLIM) is a recently developed tool that resolves peculiarities of local photophysics by assessing the dynamics of photoluminescence detected by wide-field optical microscopy. We demonstrate the capability of CLIM as a high-throughput characterization tool of perovskite films using MAPbI<sub>3</sub> (MAPI) and triple cation mixed halide (TCMH) perovskites as examples where it resolves the interplay of carrier diffusion, recombination, and defect dynamics. We found significant differences in the appearance of metastable defect states in these two films. Despite a better surface quality and larger grain size, MAPI films showed more pronounced effects of fluctuating defect states than did TCMH films. As CLIM shows a significant difference between materials known to lead to different solar cell efficiencies, it can be considered a tool for quality control of thin films for perovskite optoelectronic devices.</p>}},
  author       = {{Seth, Sudipta and Louis, Boris and Asano, Koki and Van Roy, Toon and Roeffaers, Maarten B.J. and Debroye, Elke and Scheblykin, Ivan G. and Vacha, Martin and Hofkens, Johan}},
  issn         = {{2832-3637}},
  keywords     = {{functional imaging; halide perovskites; local photophysics; metastable defects; Structure−function relationship}},
  language     = {{eng}},
  month        = {{04}},
  number       = {{4}},
  pages        = {{244--252}},
  publisher    = {{The American Chemical Society (ACS)}},
  series       = {{Chemical and Biomedical Imaging}},
  title        = {{Unveiling the Local Fate of Charge Carriers in Halide Perovskite Thin Films via Correlation Clustering Imaging}},
  url          = {{http://dx.doi.org/10.1021/cbmi.4c00113}},
  doi          = {{10.1021/cbmi.4c00113}},
  volume       = {{3}},
  year         = {{2025}},
}