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Controlling Photoluminescence and Photocatalysis Activities in Lead-Free Cs2PtxSn1−xCl6 Perovskites via Ion Substitution

Yin, Hang ; Chen, Junsheng ; Guan, Peng ; Zheng, Daoyuan ; Kong, Qingkun ; Yang, Songqiu ; Zhou, Panwang ; Yang, Bin ; Pullerits, Tönu LU and Han, Keli (2021) In Angewandte Chemie - International Edition 60(42). p.22693-22699
Abstract

Lead-free halide perovskites have triggered interest in the field of optoelectronics and photocatalysis because of their low toxicity, and tunable optical and charge-carrier properties. From an application point of view, it is desirable to develop stable multifunctional lead-free halide perovskites. We have developed a series of Cs2PtxSn1−xCl6 perovskites (0≤x≤1) with high stability, which show switchable photoluminescence and photocatalytic functions by varying the amount of Pt4+ substitution. A Cs2PtxSn1−xCl6 solid solution with a dominant proportion of Pt4+ shows broadband photoluminescence with a lifetime on the microsecond... (More)

Lead-free halide perovskites have triggered interest in the field of optoelectronics and photocatalysis because of their low toxicity, and tunable optical and charge-carrier properties. From an application point of view, it is desirable to develop stable multifunctional lead-free halide perovskites. We have developed a series of Cs2PtxSn1−xCl6 perovskites (0≤x≤1) with high stability, which show switchable photoluminescence and photocatalytic functions by varying the amount of Pt4+ substitution. A Cs2PtxSn1−xCl6 solid solution with a dominant proportion of Pt4+ shows broadband photoluminescence with a lifetime on the microsecond timescale. A Cs2PtxSn1−xCl6 solid solution with a small amount of Pt4+ substitution exhibits photocatalytic hydrogen evolution activity. An optical spectroscopy study reveals that the switch between photoluminescence and photocatalysis functions is controlled by sub-band gap states. Our finding provides a new way to develop lead-free multifunctional halide perovskites with high stability.

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author
; ; ; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
charge-carrier dynamics, lead-free perovskite, photocatalysis, photoluminescence, sub-band gap
in
Angewandte Chemie - International Edition
volume
60
issue
42
pages
22693 - 22699
publisher
John Wiley & Sons Inc.
external identifiers
  • pmid:34355483
  • scopus:85114669296
ISSN
1433-7851
DOI
10.1002/anie.202108133
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2021 Wiley-VCH GmbH
id
e2581ea8-e38f-4714-b827-635a26321d62
date added to LUP
2021-10-13 14:48:36
date last changed
2025-12-16 18:58:26
@article{e2581ea8-e38f-4714-b827-635a26321d62,
  abstract     = {{<p>Lead-free halide perovskites have triggered interest in the field of optoelectronics and photocatalysis because of their low toxicity, and tunable optical and charge-carrier properties. From an application point of view, it is desirable to develop stable multifunctional lead-free halide perovskites. We have developed a series of Cs<sub>2</sub>Pt<sub>x</sub>Sn<sub>1−x</sub>Cl<sub>6</sub> perovskites (0≤x≤1) with high stability, which show switchable photoluminescence and photocatalytic functions by varying the amount of Pt<sup>4+</sup> substitution. A Cs<sub>2</sub>Pt<sub>x</sub>Sn<sub>1−x</sub>Cl<sub>6</sub> solid solution with a dominant proportion of Pt<sup>4+</sup> shows broadband photoluminescence with a lifetime on the microsecond timescale. A Cs<sub>2</sub>Pt<sub>x</sub>Sn<sub>1−x</sub>Cl<sub>6</sub> solid solution with a small amount of Pt<sup>4+</sup> substitution exhibits photocatalytic hydrogen evolution activity. An optical spectroscopy study reveals that the switch between photoluminescence and photocatalysis functions is controlled by sub-band gap states. Our finding provides a new way to develop lead-free multifunctional halide perovskites with high stability.</p>}},
  author       = {{Yin, Hang and Chen, Junsheng and Guan, Peng and Zheng, Daoyuan and Kong, Qingkun and Yang, Songqiu and Zhou, Panwang and Yang, Bin and Pullerits, Tönu and Han, Keli}},
  issn         = {{1433-7851}},
  keywords     = {{charge-carrier dynamics; lead-free perovskite; photocatalysis; photoluminescence; sub-band gap}},
  language     = {{eng}},
  number       = {{42}},
  pages        = {{22693--22699}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Angewandte Chemie - International Edition}},
  title        = {{Controlling Photoluminescence and Photocatalysis Activities in Lead-Free Cs<sub>2</sub>Pt<sub>x</sub>Sn<sub>1−x</sub>Cl<sub>6</sub> Perovskites via Ion Substitution}},
  url          = {{http://dx.doi.org/10.1002/anie.202108133}},
  doi          = {{10.1002/anie.202108133}},
  volume       = {{60}},
  year         = {{2021}},
}