Journal
CRYSTAL GROWTH & DESIGN
Volume 10, Issue 6, Pages 2455-2459Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cg9015367
Keywords
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Funding
- Program for New Century Excellent Talents [07-0430]
- National Basic Research Program of China [2007CB936302]
- China Postdoctoral Sustentation Fund [200904501062]
- Jiangsu Province Postdoctoral Sustentation Fund [0901001B]
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Herein we present the successful synthesis of aligned arrays of single-crystalline, 6-fold-symmetrical, hierarchical ZnO nanostructures via a two-step vapor-phase transport method. The X-ray diffraction and transmission electron microscopy results illustrate that the backbones of the as-grown product have excellent orientation along the [001] direction, and the branches epitaxially grow on the backbone along the (100) direction. At room temperature, the 6-fold-symmetrical hierarchical ZnO nanostructure arrays exhibit a very strong green luminescence centered at 515 nm: The field emission measurements show that they have a turn-on field of 5.6 V/mu m and field-enhancement factor of 1351, which indicate their potential application in field emission nanodevices.
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