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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
Source PublicationACTA PHYSICO-CHIMICA SINICA
Volume28Issue:4Pages:857-864
AbstractCu2S 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%.
SubtypeArticle
KeywordCu2s Photocathode Interfacial Charge Transfer Resistance Impedance Quantum-dot-sensitized Solar Cell
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3866/PKU.WHXB201202204
WOS Subject ExtendedChemistry
WOS KeywordSENSITIZED SOLAR-CELLS ; COUNTER ELECTRODES ; TIO2 FILMS ; LOW-COST ; CDSE ; EFFICIENCY ; PERFORMANCE ; CARBON
Indexed BySCI
Language英语
WOS SubjectChemistry, Physical
WOS IDWOS:000302764400018
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Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10548
Collection中国科学院广州能源研究所
AffiliationChinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
Recommended Citation
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.
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