DOAJ Open Access 2023

Fabrication of Cu2ZnSnS4 (CZTS) by co-electrodeposition of Cu-Zn-Sn alloys, and effect of chemical composition of CZTS on their photoelectrochemical water splitting

Mitsuru Tanaka Yuya Hirose Yoshiyuki Harada Masanari Takahashi Yoshihisa Sakata +1 lainnya

Abstrak

Sulfide kesterite Cu2ZnSnS4 (CZTS), an intrinsic p-type semiconductor, provides an attractive low-cost, environmentally friendly photoelectrochemical (PEC) water splitting to evolve hydrogen. The purpose of this study was to clarify the effect of the chemical composition of CZTS on the PEC properties and the correlation with their structures. The CZTS was fabricated on a Mo/glass by a non-vacuum process, i.e., co-electrodeposition (co-ED) of Cu-Zn-Sn (CZT) alloys, followed by sulfurization with solid sulfur. To optimize the chemical composition of CZTS, the bath concentrations, applied potentials and amounts of electric charge for preparation conditions of the CZT precursors were examined. The CZTS with Cu-poor and Sn-rich composition compared with stoichiometry was found to exhibit relatively effective PEC water splitting. It was suggested that the high PEC performance was attributed to efficient charge carrier transport due to the presence of a small amount of SnO2 phase on the CZTS surface.

Topik & Kata Kunci

Chemistry

Penulis (6)

Mitsuru Tanaka

Yuya Hirose

Yoshiyuki Harada

Masanari Takahashi

Yoshihisa Sakata

Shinya Higashimoto

Format Sitasi

APA MLA BibTeX

Tanaka, M., Hirose, Y., Harada, Y., Takahashi, M., Sakata, Y., Higashimoto, S. (2023). Fabrication of Cu2ZnSnS4 (CZTS) by co-electrodeposition of Cu-Zn-Sn alloys, and effect of chemical composition of CZTS on their photoelectrochemical water splitting. https://doi.org/10.1016/j.rechem.2023.100900

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1016/j.rechem.2023.100900
Akses: Open Access ✓