Journal
CARBON
Volume 50, Issue 10, Pages 3622-3626Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2012.03.033
Keywords
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Funding
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20103514120009]
- Scientific Research Project for Universities
- Fujian Education Department [JK2010005]
- National High Technology Research and Development Program of China (863 Program) [2012AA030303]
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Zinc oxide (ZnO) nanorods were vertically grown on the surface of graphene sheets by chemical vapor deposition, and their use in a field emission device was demonstrated. In comparison with pristine graphene, the graphene/ZnO nanorod hybrid structure exhibited efficient field emission with low turn-on field, low threshold field, high emission spot density, high field enhancement factor and excellent emitting stability. It is proposed that the introduction of mid-density ZnO nanorods on the surface of graphene sheets can increase the number of emitters, enhance tunneling probability, and lead to optimized field emission for the hybrid emitters. The results showed that the field emission properties of graphene can be tailored by growing various ZnO nanostructures on its surface. (C) 2012 Elsevier Ltd. All rights reserved.
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