Solution transformation of SnS into Cu2ZnSnS4xSe4(1-x) for solar water splitting

Cao, Meng; Zhang, Xiang; Gong, Huipei; Sun, Yan; Zhang, Shan; Jiang, Yucheng; Zhang, Jijun; Shen, Yue; Wang, Linjun

doi:10.1016/j.ceramint.2021.05.323

Cited by 3 publications

(1 citation statement)

References 43 publications

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“…It is worth to mention that the obtained J ph value of device PC-2 is significantly higher than that of previously reported kesterites (i.e., including CZTS, CZTSe, and CZTSSe) thin-film photocathodes, also representing the top value for state-of-the-art chalcogenide-based photocathodes (Figure 1g; Table S1, Supporting Information). [3,5,10,11,14,15,[28][29][30][31][32] J-V curves associated to these devices in dark and continuous simulated sunlight irradiation are shown in Figure 1e, presenting a synchronous variation with strong correlation with CZTSSe film thickness. In addition, Figure 1f exhibits the as-calculated HC-STH conversion efficiencies.…”

Section: Resultsmentioning

confidence: 99%

Charge Separation Enhancement Enables Record Photocurrent Density in Cu₂ZnSn(S,Se)₄ Photocathodes for Efficient Solar Hydrogen Production

Liang

Liu

Ishaq

et al. 2023

Advanced Energy Materials

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Cu2ZnSn(S,Se)4 (CZTSSe) is a promising light absorbing semiconductor for solar energy conversion in photovoltaic cells and photo‐electrochemical (PEC) water‐splitting devices, owing to its earth‐abundant constituents, adjustable band‐gap, and superior absorption coefficient. However, the severe charge carrier recombination and the sluggish charge separation efficiency are the main issues obstructing the enhancement of device performance. In this work, a planar‐type Mo/CZTSSe/CdS/TiO2/Pt photocathode is fabricated. High‐quality CZTSSe film with compact and uniform crystal grains can be obtained via a two‐step process involving solution processed spin coating and thermally processed selenization. When an appropriate film thickness is used, both bulk defects and surface/interface defects are passivated, significantly suppressing the defects‐assisted recombination. Moreover, the benign energy band alignment of CZTSSe/CdS heterojunction is favorable to enhance photo‐generated charge separation and transfer efficiency. A remarkable photocurrent density of 40.40 mA cm−2 (at 0 VRHE) can be achieved, approaching to its theoretical value of 42.85 mA cm−2, and representing the highest value reported to date for kesterites‐based photocathodes. A champion CZTSSe photocathode with half‐cell solar‐to‐hydrogen conversion efficiency of 6.47% suggests a bright future for efficient solar hydrogen production applications.

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Section: Resultsmentioning

confidence: 99%

Charge Separation Enhancement Enables Record Photocurrent Density in Cu₂ZnSn(S,Se)₄ Photocathodes for Efficient Solar Hydrogen Production

Liang

Liu

Ishaq

et al. 2023

Advanced Energy Materials

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Regulating SnZn defects and optimizing bandgap in the Cu2ZnSn(S,Se)4 absorption layer by Ge gradient doping for efficient kesterite solar cells

Guo,

Li,

Jiang

et al. 2024

Ceramics International

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Boosting photoelectrochemical and photovoltaic performance of kesterite through compositional engineering via S–Se synergy

Jang,

Gaikwad,

Malavekar

et al. 2025

International Journal of Hydrogen Energy

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Solution transformation of SnS into Cu2ZnSnS4xSe4(1-x) for solar water splitting

Cited by 3 publications

References 43 publications

Charge Separation Enhancement Enables Record Photocurrent Density in Cu₂ZnSn(S,Se)₄ Photocathodes for Efficient Solar Hydrogen Production

Charge Separation Enhancement Enables Record Photocurrent Density in Cu₂ZnSn(S,Se)₄ Photocathodes for Efficient Solar Hydrogen Production

Regulating SnZn defects and optimizing bandgap in the Cu2ZnSn(S,Se)4 absorption layer by Ge gradient doping for efficient kesterite solar cells

Boosting photoelectrochemical and photovoltaic performance of kesterite through compositional engineering via S–Se synergy

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Solution transformation of SnS into Cu2ZnSnS4xSe4(1-x) for solar water splitting

Cited by 3 publications

References 43 publications

Charge Separation Enhancement Enables Record Photocurrent Density in Cu2ZnSn(S,Se)4 Photocathodes for Efficient Solar Hydrogen Production

Charge Separation Enhancement Enables Record Photocurrent Density in Cu2ZnSn(S,Se)4 Photocathodes for Efficient Solar Hydrogen Production

Regulating SnZn defects and optimizing bandgap in the Cu2ZnSn(S,Se)4 absorption layer by Ge gradient doping for efficient kesterite solar cells

Boosting photoelectrochemical and photovoltaic performance of kesterite through compositional engineering via S–Se synergy

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Resources

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Charge Separation Enhancement Enables Record Photocurrent Density in Cu₂ZnSn(S,Se)₄ Photocathodes for Efficient Solar Hydrogen Production

Charge Separation Enhancement Enables Record Photocurrent Density in Cu₂ZnSn(S,Se)₄ Photocathodes for Efficient Solar Hydrogen Production