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Temperature-Dependent Photoluminescence Property of Self-Assembly ZnO Nanowires via Chemical Vapor Deposition Combined with Hydrothermal Pretreatment

Shenzhen Key Laboratory of Advanced Materials, Department of Materials Science and Engineering, Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China
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Academic Editor: Giorgio Biasiol
Materials 2015, 8(11), 7598-7603; https://doi.org/10.3390/ma8115393
Received: 13 September 2015 / Revised: 26 October 2015 / Accepted: 28 October 2015 / Published: 11 November 2015
(This article belongs to the Section Manufacturing Processes and Systems)
Vertically aligned ZnO nanowires with high aspect ratio were prepared by chemical vapor deposition on Si substrate, which had been catalyzed by the polar plane in [0001] direction of ZnO nanorods prepared by the hydrothermal method. Morphology and structure characterizations showed that the as-grown nanowires had the single-crystal hexagonal wurtzite structure with a [0001] growth direction. Energy Dispersive X-ray (EDX) measurement indicated the as-grown ZnO nanowires had a good deal of oxygen vacancies owing to the high operation temperature. Temperature-dependent photoluminescence measurement revealed that the peak of near-band-edge emission shifted from 380 to 387 nm with the increase of temperature from 150 to 300 K. The high intensity of the green peak at 525 nm highlighted the potential application in visible light emitting diodes. View Full-Text
Keywords: zinc oxide; nanowires; hydrothermal; chemical vapor deposition; crystal growth; luminescence zinc oxide; nanowires; hydrothermal; chemical vapor deposition; crystal growth; luminescence
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Li, Z.; Liu, X. Temperature-Dependent Photoluminescence Property of Self-Assembly ZnO Nanowires via Chemical Vapor Deposition Combined with Hydrothermal Pretreatment. Materials 2015, 8, 7598-7603.

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