期刊
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
卷 166, 期 3, 页码 196-202出版社
ELSEVIER
DOI: 10.1016/j.mseb.2009.11.023
关键词
ZnO; Hierarchical nanostructure; Solar cell
资金
- Natural Science Foundation of China [10732020, 50672065]
- Chinese 863 project [2007AA021808, 2009AA03Z301]
- Post-doctoral Foundation of China [20080430722]
- MFAL-TJ of Motorola Inc.
Uniform hierarchical ZnO nanostructures are synthesized on a large scale based on a solution approach at low temperature. The primary ZnO hexagonal prisms are firstly produced by the reaction of Zn(NO3)(2) with hexamethylenetetramine, and then ZnO branches grow on the primary prisms by using ethylene-diamine molecules as an evocator. The morphology of the hierarchical nanostructure can be controlled conveniently by adjusting the molar ratio of [EDA]/[Zn2+]. The hierarchical structure provides an effective pathway for carrier transport as well as larger Surface area for dye adsorption, when ZnO hierarchical nanostructures serve as photoanode materials, the solar cells show higher conversion efficiency than that of primary ZnO nanowires. (C) 2009 Elsevier B.V. All rights reserved.
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