Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 60, Issue 42, Pages 22693-22699Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202108133
Keywords
charge-carrier dynamics; lead-free perovskite; photocatalysis; photoluminescence; sub-band gap
Categories
Funding
- National Natural Science Foundation of China (NSFC) [22088102]
- National Natural Science Foundation of China [21833009, 22179072]
- National Key Research and Development Program of China [2017YFA0204800]
- LiaoNing Revitalization Talents Program [XLYC1802126]
- Dalian City Foundation for Science and Technology Innovation [2019J12GX031]
- Swedish Energy Agency
- Lundbeck Foundation [R303-2018-3237]
Ask authors/readers for more resources
The research team has successfully developed stable Cs2PtxSn1-xCl6 perovskites with switchable photoluminescence and photocatalytic functions by adjusting the amount of Pt4+ substitution. This solid solution material exhibits diversity in optical properties and functionality, showing potential for various applications.
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available