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Defects of Metal Halide Perovskites in Photocatalytic Energy Conversion: Friend or Foe?
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Defects of Metal Halide Perovskites in Photocatalytic Energy Conversion: Friend or Foe?
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Journal Article
Defects of Metal Halide Perovskites in Photocatalytic Energy Conversion: Friend or Foe?
2024
Overview
Photocatalytic solar‐to‐fuel conversion over metal halide perovskites (MHPs) has recently attracted much attention, while the roles of defects in MHPs are still under debate. Specifically, the mainstream viewpoint is that the defects are detrimental to photocatalytic performance, while some recent studies show that certain types of defects contribute to photoactivity enhancement. However, a systematic summary of why it is contradictory and how the defects in MHPs affect photocatalytic performance is still lacking. In this review, the innovative roles of defects in MHP photocatalysts are highlighted. First, the origins of defects in MHPs are elaborated, followed by clarifying certain benefits of defects in photocatalysts including optical absorption, charge dynamics, and surface reaction. Afterward, the recent progress on defect‐related MHP photocatalysis, i.e., CO2 reduction, H2 generation, pollutant degradation, and organic synthesis is systematically discussed and critically appraised, putting emphasis on their beneficial effects. With defects offering peculiar sets of merits and demerits, the personal opinion on the ongoing challenges is concluded and outlining potentially promising opportunities for engineering defects on MHP photocatalysts. This critical review is anticipated to offer a better understanding of the MHP defects and spur some inspiration for designing efficient MHP photocatalysts. The recent progress on defect engineering of metal halide perovskites (MHPs) for photocatalysis is summarized and reexamined, focusing on discussing and critically appraising the benefits of defects, together with outlining potentially promising opportunities and directions for moving MHP‐based photocatalysis research forward.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc,Wiley
