Direct growth of hematite film on p(+)n-silicon micro-pyramid arrays for low-bias water splitting
文献类型：期刊论文
| 作者 | Xiao, Chenhong; Zhou, Zhongyuan; Li, Liujing; Yang, Zhenhai; Wu, Shaolong; Li, Xiaofeng |
| 刊名 | SOLAR ENERGY MATERIALS AND SOLAR CELLS
 |
| 出版日期 | 2021 |
| 卷号 | 224 |
| 关键词 | OXYGEN VACANCIES PHOTOANODES OXIDE PERFORMANCE NANOSTRUCTURES LAYER TI |
| 英文摘要 | Solar water splitting based on photoelectrochemical (PEC) cells has been intensively demonstrated to be promising for hydrogen energy, but it is usually difficult for one pure PEC system to achieve overall solar-driven water splitting. To solve this problem, integrating one PEC cell with one photovoltaic (PV) cell is widely employed, however, the preparation of an unabridged PV cell and the electrical connection between them are complicated. Herein, we directly synthesized hematite (alpha-Fe2O3) film on the as-prepared p(+)n-Si micro-pyramid arrays with the modifications of SnO2 interlayer and Co-Pi catalyst overlayer, and the turn-on potential achieved a substantial decrease, which is 0.34 V smaller than the Sn-doped hematite film grown on the FTO substrate (FTO/Sn@alpha-Fe2O3). The influences of interlayer, overlayer and alpha-Fe2O3 preparation conditions are systemically investigated. Besides, we comparatively studied the FTO/Sn@alpha-Fe2O3 photoanode in tandem with the complete p(+)n-Si micro-pyramid PV cell, and observed the turn-on potential as low as 0.32 V vs. RHE. The performance improvement is ascribed to a combination of the additional photovoltage from the embedded p(+)n-Si junction, the enhancement both in optical absorption and surface area of alpha-Fe2O3 film, and the promoted collection efficiency of photogenerated carriers from the interface and surface modifications. This work fills the gap of combining alpha-Fe2O3 photoanode and p+n-Si junction with the aim of overall solar-driven water splitting, and provides a new route to simplify the PEC/PV tandem system. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21854]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Li, XF (corresponding author), Soochow Univ, Suzhou Nano Sci & Technol, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou 215006, Peoples R China. 2.Wu, SL 3.Li, XF (corresponding author), Soochow Univ, Suzhou Nano Sci & Technol, Sch Optoelect Sci & Engn, Suzhou 215006, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Xiao, Chenhong,Zhou, Zhongyuan,Li, Liujing,et al. Direct growth of hematite film on p(+)n-silicon micro-pyramid arrays for low-bias water splitting[J]. SOLAR ENERGY MATERIALS AND SOLAR CELLS,2021,224. |
| APA | Xiao, Chenhong,Zhou, Zhongyuan,Li, Liujing,Yang, Zhenhai,Wu, Shaolong,&Li, Xiaofeng.(2021).Direct growth of hematite film on p(+)n-silicon micro-pyramid arrays for low-bias water splitting.SOLAR ENERGY MATERIALS AND SOLAR CELLS,224. |
| MLA | Xiao, Chenhong,et al."Direct growth of hematite film on p(+)n-silicon micro-pyramid arrays for low-bias water splitting".SOLAR ENERGY MATERIALS AND SOLAR CELLS 224(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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