Chih-Cheng Lin et al 2008 J. Phys. D: Appl. Phys. 41 045301 doi:10.1088/0022-3727/41/4/045301
Synthesis of one-dimensional ZnO nanostructures and their field emission properties
Chih-Cheng Lin1, Wang-Hua Lin1, Chun-Yen Hsiao2, Kuo-Min Lin1 and Yuan-Yao Li1,3
Show affiliationsThis study fabricates one-dimensional ZnO nanostructures on a tin-doped indium oxide (ITO) glass substrate by thermal evaporation of Zn powder at 400 °C. The study finds that ZnO nanocones, ZnO nanorods and ZnO nanowires can be synthesized with a catalyst-free ITO glass, a Pt-coated ITO glass and an Au-coated ITO glass, respectively. The XRD and TEM investigations show that ZnO nanostructures possess good crystalline structures with growth direction along the c-axis of the crystal plane. Photoluminescence (PL) spectra of the ZnO nanocones and nanorods show a UV emission and a broad green emission at room temperature while the nanowires show a red-shifted UV and blue emissions. Field emission studies reveal ZnO nanorod arrays with a turn-on voltage of 3.4 V µm−1 at a current density of 10 µA cm−2 and this work finds that morphology and growth direction of the ZnO nanostructures affect the field emission property.
- PACS
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81.07.-b Nanoscale materials and structures: fabrication and characterization
78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
- Subjects
- Dates
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Issue 4 (21 February 2008)
Received 11 September 2007, in final form 20 December 2007
Published 28 January 2008
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Synthesis of one-dimensional ZnO nanostructures and their field emission properties
Chih-Cheng Lin et al 2008 J. Phys. D: Appl. Phys. 41 045301
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