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题名: Model relation between the energy-band edge and the Fermi level of the nondegenerate semiconductor TiO2: Application to electrochemistry
作者: Li, Guo-Ling1;  Li, Wei-Xue1;  Li, Can1
刊名: PHYSICAL REVIEW B
发表日期: 2010-12-08
DOI: 10.1103/PhysRevB.82.235109
卷: 82, 期:23
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Condensed Matter
研究领域[WOS]: Physics
英文摘要: Assuming small-polaron model, an effective relation between the energy-band edge and the Fermi level is derived for the nondegenerate semiconductor. The new relation is distinct from the standard one based on rigid-ion model, and could be generally applied to electrochemistry to obtain valid band-edge positions from the measured flat-band potentials for small-polaron semiconductors. We reassign the band-edge position of small-polaronlike rutile TiO2. Essence of the new model and relation, e. g., in understanding photoinduced interfacial charge transfer, is demonstrated in the comparative studies of anatase and rutile TiO2 that are used in photocatalysis and dye-sensitized solar cells.
关键词[WOS]: MAXIMUM-ENTROPY-METHOD ;  DYE-SENSITIZED TIO2 ;  RUTILE TIO2 ;  ANATASE TIO2 ;  SMALL POLARONS ;  PHOTOCATALYTIC ACTIVITY ;  TEMPERATURE-DEPENDENCE ;  ELECTRON INJECTION ;  OPTICAL-ABSORPTION ;  SINGLE-CRYSTALS
语种: 英语
WOS记录号: WOS:000286767600001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141912
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

Recommended Citation:
Li, Guo-Ling,Li, Wei-Xue,Li, Can. Model relation between the energy-band edge and the Fermi level of the nondegenerate semiconductor TiO2: Application to electrochemistry[J]. PHYSICAL REVIEW B,2010,82(23).
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