Fabricating S-scheme Sb2S3@CdSexS1–x quasi-one-dimensional heterojunction photoanodes by in-situ growth strategy towards photoelectrochemical water splitting | |
Liu, Dekang1; Zhang, Dekai1; Wang, Yishan2![]() | |
作者部门 | 瞬态光学研究室 |
2024-12-01 | |
发表期刊 | Journal of Materials Science and Technology
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ISSN | 10050302 |
卷号 | 201页码:250-260 |
产权排序 | 2 |
摘要 | Nowadays, energy and environmental problems are becoming increasingly prominent in society, the development of clean and environmentally friendly energy is in line with the construction of ecological civilization and energy, which have attracted the attention of many researchers over the past decades. Narrow band gap semiconductor Sb2S3 is widely used in the area of solar cells because of its high light absorption coefficient and suitable bandgap width. However, numerous deep-level defects provide plentiful photogenerated carrier recombination sites, which restricts the improvement of photoelectrochemical properties seriously. In this work, S-scheme Sb2S3@CdSexS1–x core-shell quasi-one-dimensional heterojunction photoanodes were prepared on the FTO substrate by a two-step vapor transport deposition (VTD) method, chemical bath deposition (CBD) and in-situ selenization method. The results showed that CdSexS1–x nanoparticles (NPs) were tightly coated on the Sb2S3 nanorods (NRs). The photocurrent density of the Sb2S3@CdSexS1–x photoanodes was 1.61 mA cm–2 under 1.23 VRHE. Compared with the Sb2S3 photoanodes (0.61 mA cm–2), Sb2S3@CdSexS1–x photoanodes obtained a 2.64-fold improvement, and the dark current was effectively reduced. It showed excellent stability and fast photocurrent response in a 600 s optical stability test. It was concluded that: (1) The charge transfer mechanism of the S-scheme can avoid the problem of high recombination rate of photogenerated charge carriers due to the defects of Sb2S3 effectively, and realized spatial separation of photogenerated carriers. (2) The [hk1] oriented Sb2S3 NRs and the formed quasi-one-dimensional heterostructures promote efficient carrier transport. (3) The introduction of Se effectively regulated the band structure of CdS, slowed down the photocorrosion of S, and improved the stability of the photoelectrodes significantly. © 2024 |
关键词 | Sb2 S3 nanorods Vapor transport deposition In-situ selenization S-scheme heterojunction Photoelectrochemical performance |
DOI | 10.1016/j.jmst.2024.02.049 |
收录类别 | EI |
语种 | 英语 |
出版者 | Chinese Society of Metals |
EI入藏号 | 20241916035918 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/97456 |
专题 | 瞬态光学研究室 |
通讯作者 | Miao, Hui |
作者单位 | 1.School of Physics, Northwest University, Xi'an; 710127, China; 2.State Key Laboratory of Transient Optics and Photonics, Chinese Academy of Sciences, Xi'an; 710119, China; 3.School of Chemical Engineering, Northwest University, Xi'an; 710127, China |
推荐引用方式 GB/T 7714 | Liu, Dekang,Zhang, Dekai,Wang, Yishan,等. Fabricating S-scheme Sb2S3@CdSexS1–x quasi-one-dimensional heterojunction photoanodes by in-situ growth strategy towards photoelectrochemical water splitting[J]. Journal of Materials Science and Technology,2024,201:250-260. |
APA | Liu, Dekang,Zhang, Dekai,Wang, Yishan,Liu, Enzhou,&Miao, Hui.(2024).Fabricating S-scheme Sb2S3@CdSexS1–x quasi-one-dimensional heterojunction photoanodes by in-situ growth strategy towards photoelectrochemical water splitting.Journal of Materials Science and Technology,201,250-260. |
MLA | Liu, Dekang,et al."Fabricating S-scheme Sb2S3@CdSexS1–x quasi-one-dimensional heterojunction photoanodes by in-situ growth strategy towards photoelectrochemical water splitting".Journal of Materials Science and Technology 201(2024):250-260. |
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