气候变化领域集成服务门户(CCPortal): 3.17% efficient Cu2ZnSnS4-BiVO4integrated tandem cell for standalone overall solar water splitting

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DOI	10.1039/d0ee03892j
	3.17% efficient Cu2ZnSnS4-BiVO4integrated tandem cell for standalone overall solar water splitting
	Huang D.; Wang K.; Li L.; Feng K.; An N.; Ikeda S.; Kuang Y.; Ng Y.; Jiang F.
发表日期	2021
ISSN	17545692
起始页码	1480
结束页码	1489
卷号	14 期号:3
英文摘要	A 7.27% efficient Cu2ZnSnS4-based solar water splitting photocathode with long term stability of 24 hours was first reported by modification of a HfO2/CdS/HfO2 sandwich buffer layer. The effect of the deposited HfO2 atomic layer film at the two interfaces of CdS/CZTS and Pt/CdS or the electrolyte on the photoelectrochemical photocurrent, photovoltage and stability of the CZTS-based photocathode was systemically investigated with the following methods: time course observation of micromorphology transformation trends, light intensity-dependent Voc values (to reflect the variation in interfacial carrier recombination) and EIS spectra (for determining the changes in resistance that influence the charge transfer and trapping inside of the bulk semiconductors or surface/interfaces of the photocathode). The HfO2 layer between the CZTS and CdS interfaces significantly decreased the carrier recombination ratio inside the photocathode, and the HfO2 layer between the CdS and Pt or the electrolyte efficiently optimized the electrode/electrolyte interface that facilitates the charge transfer without being trapped. Furthermore, the CZTS-BiVO4 photocathode with a photoanode tandem cell was fabricated, and its unbiased solar to hydrogen conversion efficiency was achieved 3.17%, while a large 5 × 5 cm integrated CZTS photocathode in tandem with the BiVO4 photoanode with superior long term stability over 60 hours was assembled for the first time. © 2021 The Royal Society of Chemistry.
英文关键词	Buffer layers; Cadmium sulfide; Charge carriers; Charge transfer; Electrolytes; Hafnium oxides; II-VI semiconductors; Photocathodes; Photocurrents; Bulk semiconductors; Carrier recombination; Electrode/electrolyte interfaces; Long term stability; Micromorphologies; Photoelectrochemicals; Solar water splitting; Solar-to-hydrogen conversions; Bismuth compounds; copper; fuel cell; photolysis; solar power
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190748
作者单位	Institute of Semiconductor Science and Technology, South China Normal University, 55 Zhongshan Avenue West, Tianhe District, Guangzhou, 510631, China; Ningbo Institute of Industrial Technology, Chinese Academy of Science, Ningbo, 315200, China; Department of Chemistry, Konan University, 9-1 Okamoto, Higashinada, Kobe, Hyogo, 658-8501, Japan; School of Energy and Environment, City University of Hong Kong, Kowloon, 999077, Hong Kong
推荐引用方式 GB/T 7714	Huang D.,Wang K.,Li L.,et al. 3.17% efficient Cu2ZnSnS4-BiVO4integrated tandem cell for standalone overall solar water splitting[J],2021,14(3).
APA	Huang D..,Wang K..,Li L..,Feng K..,An N..,...&Jiang F..(2021).3.17% efficient Cu2ZnSnS4-BiVO4integrated tandem cell for standalone overall solar water splitting.Energy & Environmental Science,14(3).
MLA	Huang D.,et al."3.17% efficient Cu2ZnSnS4-BiVO4integrated tandem cell for standalone overall solar water splitting".Energy & Environmental Science 14.3(2021).