Influence of Preparation Conditions on the Properties of Cu2S Photocathodes

doi:10.3866/PKU.WHXB201202204

GIEC OpenIR > 中国科学院广州能源研究所

	Influence of Preparation Conditions on the Properties of Cu2S Photocathodes
	Shi Ji-Fu; Fan Ye; Xu Xue-Qing; Xu Gang; Chen Li-Hua
	2012-04-01
发表期刊	ACTA PHYSICO-CHIMICA SINICA
卷号	28 期号:4 页码:857-864
摘要	Cu2S nanomaterials were prepared, and the influence of preparation conditions on the morphology and catalytic reduction of sodium polysulfide was investigated. The Cu2S photocathode prepared under optimal conditions was used as a quantum-dot-sensitized solar cell. For preparation of the Cu2S photocathodes, HCl pretreatment and reaction with sodium polysulfide were important processes. The Cu2S photocathodes had petal-like structures composed of nano-plates. The Cu2S photocathodes become rough and porous, which increased the surface area, as the HCl concentration increased and pretreatment time was prolonged. As a result, interfacial charge transfer resistance between the Cu2S electrodes and polysulfide electrolyte decreased. Because the reaction between Cu and sodium polysulfide is very fast, the reaction time should be controlled. Otherwise, the Cu2S film will fracture. For good catalytic performance of the Cu2S photocathodes, the best preparation conditions were 30% HCl, pretreatment time for 40 min, and reaction with sodium polysulfide for 10 s. The quantum-dot-sensitized solar cell showed a high photoelectric conversion efficiency of 4.01%.
文章类型	Article
关键词	Cu2s Photocathode Interfacial Charge Transfer Resistance Impedance Quantum-dot-sensitized Solar Cell
WOS标题词	Science & Technology ; Physical Sciences
DOI	10.3866/PKU.WHXB201202204
研究领域[WOS]	Chemistry
关键词[WOS]	SENSITIZED SOLAR-CELLS ; COUNTER ELECTRODES ; TIO2 FILMS ; LOW-COST ; CDSE ; EFFICIENCY ; PERFORMANCE ; CARBON
收录类别	SCI
语种	英语
WOS类目	Chemistry, Physical
WOS记录号	WOS:000302764400018
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/10548
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Shi Ji-Fu,Fan Ye,Xu Xue-Qing,et al. Influence of Preparation Conditions on the Properties of Cu2S Photocathodes[J]. ACTA PHYSICO-CHIMICA SINICA,2012,28(4):857-864.
APA	Shi Ji-Fu,Fan Ye,Xu Xue-Qing,Xu Gang,&Chen Li-Hua.(2012).Influence of Preparation Conditions on the Properties of Cu2S Photocathodes.ACTA PHYSICO-CHIMICA SINICA,28(4),857-864.
MLA	Shi Ji-Fu,et al."Influence of Preparation Conditions on the Properties of Cu2S Photocathodes".ACTA PHYSICO-CHIMICA SINICA 28.4(2012):857-864.