Highest Solar-to-Hydrogen Conversion Efficiency in Cu2ZnSnS4 Photocathodes and Its Directly Unbiased Solar Seawater Splitting

Highest Solar-to-Hydrogen Conversion Efficiency in Cu2ZnSnS4 Photocathodes and Its Directly Unbiased Solar Seawater Splitting

Highlights A novel approach, precursor seed layer engineering, is applied to prepare Cu2ZnSnS4 (CZTS) light-absorbing films using the solution-processed spin-coating method. Mo/CZTS/CdS/TiO2/Pt photocathode effectively mitigates defects in CZTS light absorber and the CZTS/CdS heterojunction interfac...

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Bibliographic Details
Main Authors: Muhammad Abbas, Shuo Chen, Zhidong Li, Muhammad Ishaq, Zhuanghao Zheng, Juguang Hu, Zhenghua Su, Yanbo Li, Liming Ding, Guangxing Liang
Format: Article
Language:English
Published: SpringerOpen 2025-05-01
Series:Nano-Micro Letters
Subjects:
Cu2ZnSnS4
Solar-to-hydrogen conversion
Charge transfer dynamics
Precursor seed layer engineering
Seawater splitting
Online Access:https://doi.org/10.1007/s40820-025-01755-8
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Summary:Highlights A novel approach, precursor seed layer engineering, is applied to prepare Cu2ZnSnS4 (CZTS) light-absorbing films using the solution-processed spin-coating method. Mo/CZTS/CdS/TiO2/Pt photocathode effectively mitigates defects in CZTS light absorber and the CZTS/CdS heterojunction interface, optimizing charge carrier dynamics. Record photoelectrochemical performance including half-cell solar-to-hydrogen (HC-STH) efficiency of 9.91%, photocurrent density of 29.44 mA cm−2 at 0 V RHE in 0.5 M H2SO4 electrolyte, and STH efficiency of 2.20% in CZTS-BiVO4 tandem cell in natural seawater is achieved.
ISSN:2311-6706
2150-5551

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