Field Emission Performance of Randomly Oriented ZnO Hexagonal Nanoprisms : Catalyst-Free Chemical Vapor Deposition(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
- 論文の詳細を見る
Randomly-aligned ZnO hexagonal nanoprisms were fabricated by using catalyst-free chemical vapor deposition (CFCVD) in a double-tube system. The growth mechanism is attributed to vapor-solid mechanism. The absence of metal catalyst nanoparticles on the top of nanoprisms ensures a real field emission from ZnO nanostructures. The artificial defects arising from HF acid etching on Si(lll) substrate serve as the nuclei centers. It is shown that the emission current density of 1mA/cm^2 is obtained at 6.6V/μm macroscopic electric field. The field enhancement factor (γ=3000) is far larger than the theoretical value (γ=205), which implies that the dominating contributions can be attributed to the pyramidal salients other than the whole crests of hexagonal nanoprisms.
- 一般社団法人日本物理学会の論文
- 2006-01-15
著者
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YANG Y.
Department of Oral Biology, Brain Korea 21 Project, Yonsei University College of Dentistry
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Xiao Y.
Department Of Physics Xiangtan University
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Xuan Kai
Department of Physics and Institute of Modern Physics, Xiangtan University
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Yan X.
College of Sciences, Nanjing University of Aeronautics and Astronautics
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Ding S.
Department of Physics and Institute of Modern Physics, Xiangtan University
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GUO Z.
College of Sciences, Nanjing University of Aeronautics and Astronautics
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- Field Emission Performance of Randomly Oriented ZnO Hexagonal Nanoprisms : Catalyst-Free Chemical Vapor Deposition(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)