Suppression of Undesired Losses in Organometal Halide Perovskite-Based Photoanodes for Efficient Photoelectrochemical Water Splitting

Hojoong Choi; Young Yun Kim; Sehun SeoYoonsung JungSo-Min YooChan Su MoonNam Joong JeonSanseong LeeKwanghee LeeFrancesca M. TomaJangwon SeoSanghan Lee

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Suppression of Undesired Losses in Organometal Halide Perovskite-Based Photoanodes for Efficient Photoelectrochemical Water Splitting

机译：Suppression of Undesired Losses in Organometal Halide Perovskite-Based Photoanodes for Efficient Photoelectrochemical Water Splitting

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Organometal halide perovskites (OHPs) have become potential candidates forhigh-efficiency photoelectrodes for use in photoelectrochemical (PEC) watersplitting. However, undesired losses, such as the non-radiative recombinationof photogenerated carriers and sluggish reaction kinetics of PEC watersplitting, are the main limitations to achieving maximum efficiency forOHP-based photoelectrodes. Herein, high-efficiency OHP-based photoanodeswith a rational design that suppresses the undesired losses is reported. As arational design for OHP-based photoanodes, the defect-passivated electrontransport layers effectively suppress the undesired recombination ofphotogenerated carriers from the OHP layers. In addition, Fe-doped Ni_3S_2with a high catalytic activity promotes the reaction kinetics of PEC wateroxidation, thereby suppressing the undesired losses at the interface betweenthe OHP photoanodes and electrolytes. The fabricated Fe-doped Ni_3S_2/Nifoil/OHP photoanodes exhibit a remarkable applied bias photon-to-currentefficiency of 12.79%, which is the highest of the previously reportedOHP-based photoanodes by suppressing undesired losses. The strategies forachieving high-efficiency OHP-based photoanodes provide insights into therational design of photoelectrodes based on OHPs.

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来源
《Advanced energy materials》 |2023年第31期|2300951.1-2300951.13|共13页
作者
Hojoong Choi; Young Yun Kim; Sehun SeoYoonsung JungSo-Min YooChan Su MoonNam Joong JeonSanseong LeeKwanghee LeeFrancesca M. TomaJangwon SeoSanghan Lee;
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作者单位

School of Materials Science and EngineeringGwangju Institute of Science and TechnologyGwangju 61005, Republic of Korea;

Division of Advanced MaterialsKorea Research Institute of Chemical Technology (KRICT)Daejeon 34114, Republic of Korea;

Chemical Sciences DivisionLawrence BerkeleyNational Laboratory1Cyclotron Road, Berkeley, CA 94720,USA,Liquid Sunlight AllianceLawrence Berkeley National Laboratory1 Cyclotron Road, Berkeley, CA 94720, USASchool of Materials Science and EngineeringGwangju Institute of Science and TechnologyGwangju 61005, Republic of Korea,Heeger Center for Advanced MaterialsGwangju Institute of Science and TechnologyGwangju 61005, Republic of KoreaChemical Sciences DivisionLawrence BerkeleyNational Laboratory1Cyclotron Road, Berkeley, CA 94720,USA,Liquid Sunlight AllianceLawrence Berkeley National Laboratory1 Cyclotron Road, Berkeley, CA 94720, USA,Institute of Functional Materials for SustainabiliDivision of Advanced MaterialsKorea Research Institute of Chemical Technology (KRICT)Daejeon 34114, Republic of Korea,Depeartment of Chemical & Biomolecular EngineeringKorea Advanced Institute of Science and TechnologyDaejeon 34141, Republic of Korea;

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正文语种英语
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defect passivation; organometal halide perovskites; photoanodes; photoelectrochemical water splitting; solar cells;

Suppression of Undesired Losses in Organometal Halide Perovskite-Based Photoanodes for Efficient Photoelectrochemical Water Splitting

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