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Liu Y, Meng X, Wan X, Wang Z, Huang H, Long H, Song Z, Fang G. Synthesis and field emission studies of tower-like GaN nanowires. Nanoscale Res Lett 2014; 9:607. [PMID: 25404876 PMCID: PMC4231361 DOI: 10.1186/1556-276x-9-607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 11/02/2014] [Indexed: 06/04/2023]
Abstract
UNLABELLED Tower-like GaN nanowires were successfully fabricated on Au-coated Si substrates by chemical vapor deposition. The tower-like nanowire consisted of a nanowire at the center and microcrystal layers stacked one by one around the nanowire. The tower-like nanowires grew along the [0001] direction, and the exposed surfaces of the microcrystal layers are [Formula: see text] and [Formula: see text] facets. The growth mechanism of the tower-like GaN nanowires was proposed. The field emission property of tower-like GaN nanowires was tested. Due to the sharp tips, nearly vertical alignment and rough surfaces caused by the microcrystal layers, the tower-like GaN nanowires show excellent performance in field emission with a turn-on field of 2.44 V/μm which is lower than those of other GaN one-dimensional (1D) nanomaterials. PACS 81.15.Gh; 68.37.Lp; 68.37.Vj.
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Affiliation(s)
- Yihe Liu
- Key Laboratory of Artificial Micro-and Nanostructures Ministry of Education and School of Physics and Technology, Wuhan University, Luojia Hill, Wuhan 430072, Hubei, People's Republic of China
| | - Xianquan Meng
- Key Laboratory of Artificial Micro-and Nanostructures Ministry of Education and School of Physics and Technology, Wuhan University, Luojia Hill, Wuhan 430072, Hubei, People's Republic of China
| | - Xiang Wan
- Key Laboratory of Artificial Micro-and Nanostructures Ministry of Education and School of Physics and Technology, Wuhan University, Luojia Hill, Wuhan 430072, Hubei, People's Republic of China
| | - Zelong Wang
- Key Laboratory of Artificial Micro-and Nanostructures Ministry of Education and School of Physics and Technology, Wuhan University, Luojia Hill, Wuhan 430072, Hubei, People's Republic of China
| | - Huihui Huang
- Key Laboratory of Artificial Micro-and Nanostructures Ministry of Education and School of Physics and Technology, Wuhan University, Luojia Hill, Wuhan 430072, Hubei, People's Republic of China
| | - Hao Long
- Key Laboratory of Artificial Micro-and Nanostructures Ministry of Education and School of Physics and Technology, Wuhan University, Luojia Hill, Wuhan 430072, Hubei, People's Republic of China
| | - Zengcai Song
- Key Laboratory of Artificial Micro-and Nanostructures Ministry of Education and School of Physics and Technology, Wuhan University, Luojia Hill, Wuhan 430072, Hubei, People's Republic of China
| | - Guojia Fang
- Key Laboratory of Artificial Micro-and Nanostructures Ministry of Education and School of Physics and Technology, Wuhan University, Luojia Hill, Wuhan 430072, Hubei, People's Republic of China
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