Journal
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
Volume 166, Issue 3, Pages 196-202Publisher
ELSEVIER
DOI: 10.1016/j.mseb.2009.11.023
Keywords
ZnO; Hierarchical nanostructure; Solar cell
Funding
- Natural Science Foundation of China [10732020, 50672065]
- Chinese 863 project [2007AA021808, 2009AA03Z301]
- Post-doctoral Foundation of China [20080430722]
- MFAL-TJ of Motorola Inc.
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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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