共 35 条
A new ZnO nanotetrapods/SnO2 nanoparticles composite photoanode for high efficiency flexible dye-sensitized solar cells
被引:53
作者:

Chen, Wei
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h-index: 0
机构:
Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China

Qiu, Yongcai
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h-index: 0
机构:
Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China

Yang, Shihe
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h-index: 0
机构:
Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
机构:
[1] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China
关键词:
LOW-TEMPERATURE FABRICATION;
CONVERSION EFFICIENCY;
TIO2;
FILMS;
HYDROTHERMAL CRYSTALLIZATION;
NANOCRYSTALLINE TIO2;
EQUIVALENT-CIRCUIT;
ELECTRON INJECTION;
PHOTOELECTRODES;
ENHANCEMENT;
SNO2;
D O I:
10.1039/c000584c
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
We report a new photoanode for flexible dye sensitized solar cells based on a judicious combination of SnO2 nanoparticles and ZnO nanotetrapods and the development of an effective low temperature fabrication technique of "acetic acid gelation-mechanical press-ammonia activation''. A 4.91% efficiency has been achieved on an ITO-coated polyethylenenaphthalate (ITO/PEN) substrate under 1 sun equivalent illumination. The peculiar symmetrical branching morphology of ZnO nanotetrapods is beneficial to charge collection of the SnO2/ZnO composite photoanode. The formation of a thin ZnO shell on SnO2 nanoparticles, after ammonia activation, is critical to boosting the open-circuit photovoltage and to improving inter-particle contacts as well as photoelectron injection. The mechanical press, apart from enhancing film durability, has also significantly improved charge collection.
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页码:9494 / 9501
页数:8
相关论文
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Swiss Fed Inst Technol, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland Univ Toulouse 2, CNRS, LCC UPR 8241, F-31077 Toulouse, France

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