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题名: Charge recombination reduction in dye-sensitized solar cells by depositing ultrapure TiO2 nanoparticles on "inert" BaTiO3 films
作者: Zhong, Min1, 2;  Shi, Jingying1;  Zhang, Wenhua1;  Han, Hongxian1;  Li, Can1
关键词: Interfacial charge recombination ;  Trap states ;  BaTiO3 ;  Anatase TiO2 ;  Dye-sensitized solar cells
刊名: MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
发表日期: 2011-08-25
DOI: 10.1016/j.mseb.2011.05.052
卷: 176, 期:14, 页:1115-1122
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology ;  Physical Sciences
类目[WOS]: Materials Science, Multidisciplinary ;  Physics, Condensed Matter
研究领域[WOS]: Materials Science ;  Physics
英文摘要: Ultrapure TiO2 nanoparticles (similar to 5 nm in size) were supported on "inert" BaTiO3 films by TiCl4 treatment, which was used to fabricate dye-sensitized solar cells (DSSCs). The optimized electrode, designated as BaTiO3/TiO2(4), was obtained upon four cycles of TiCl4 treatment. DSSC with BaTiO3/TiO2(4) electrode exhibits superior power conversion efficiency (PCE) compared to that with conventional anatase TiO2 (similar to 25 nm in size) electrode. The interfacial charge recombination kinetics was investigated by electrochemical impedance spectroscopy (EIS) and intensity-modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS). In contrast to DSSC with anatase TiO2 electrode, the dramatically enhanced electron lifetime for DSSC with BaTiO3/TiO2(4) electrode could be attributed to the decrease of recombination reaction at the TiO2 photoelectrode/electrolyte interface. It is proposed that the lower interfacial charge recombination can be related to the relatively shallower trap distributions in DSSC with BaTiO3/TiO2(4) electrode. (C) 2011 Elsevier BM. All rights reserved.
关键词[WOS]: ELECTRON-TRANSPORT ;  COLLECTION EFFICIENCY ;  IMPEDANCE ;  SURFACE ;  PERFORMANCE ;  SPECTROSCOPY ;  EVOLUTION ;  TITANATE ;  CIRCUIT ;  DENSITY
语种: 英语
WOS记录号: WOS:000295557600012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142545
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Zhong, Min,Shi, Jingying,Zhang, Wenhua,et al. Charge recombination reduction in dye-sensitized solar cells by depositing ultrapure TiO2 nanoparticles on "inert" BaTiO3 films[J]. MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS,2011,176(14):1115-1122.
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