Journal
APPLIED PHYSICS LETTERS
Volume 101, Issue 17, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4763474
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Funding
- National Natural Science Foundation of China [NSFC 50902004, 11023003, 10974003]
- National 973 Projects from China's Ministry of Science and Technology [2009CB623703, 2011CB707601, 2012CB933401, MOST]
- Sino-Swiss Science and Technology Cooperation Program [2010DFA01810]
- National Fund for Fostering Talents for Basic Science (NFFTBS) [J1030310, J1103205]
- National Undergraduate Innovational Experimentation Program
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Large scale, uniform single-layer graphene was transferred onto well-aligned ZnO nanowire arrays to produce high density nanoscale protrusions within graphene for efficient field emission. Polymethyl methacrylate (PMMA) was used as a supporting layer to provide a quasi-flat surface for graphene transfer. Highly efficient (maximum current density of similar to 500 mu A/cm(2)) and stable field emission with low turn-on fields (5.4 V/mu m) was observed due to highly localized electric field, which is much better than those without using PMMA. F-N plot showed an unique up-bending feature of single-layer graphene. Our approach provides an efficient way to produce high quality single-layer graphene field emitters. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4763474]
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