Defect- and interfacial-engineering strategies to synthesize CsPbX3 perovskite nanocrystals for efficient photo(electro)catalysis
Andres F. Gualdrón-Reyes a, Camilo A. Mesa a, Sixto Giménez a, Iván Mora Seró a
a Institute of Advanced Materials (INAM), Universitat Jaume I, 12071 Castelló de la Plana, Spain
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Oral, Andres F. Gualdrón-Reyes, presentation 094
Publication date: 20th April 2022

Perovskite nanocrystals (PNCs) are promissory materials in optoelectronics due to improved light harvesting, photocarrier generation and the ease for tuning their optical properties, by varying their particle size and halide composition.[1] These characteristics have opened the door to interesting applications such as photo(electro)catalysis for carrying out oxidation/reduction reactions more efficiently.[2] However, there is a scarce in the state-of-the-art about the photo(electro)chemical (PEC) properties of these materials in form of electrodes for establishing their oxidizing/reducing power, also considering that the photocatalytic (PC) activity of PNCs mainly depends on the surface chemical environment formed during their synthesis. In this contribution, we show the ability of PNCs to perform photo(electro)catalytic degradation of targeted organic molecules as a proof-of-concept, and we also deduce how the purification of PbX2 precursors as a defect-engineering strategy influences on their PC properties. Then, we demonstrate that the use of different carrier transporting layers impacts on the PEC behavior of PNCs based photomaterials, fabricating selective photoelectrodes to perform oxidation/reduction reactions. Lastly, we address to lead-free PNCs with high potentiality for solar-driven chemical reactions.

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