Facile Synthesis and Enhanced Ultraviolet Emission of ZnO Nanorods Prepared by Vapor-Confined Face-to-Face Annealing

In this study, we report a novel regrowth method of sol–gel-prepared ZnO films using a vapor-confined face-to-face annealing (VC-FTFA) technique in which mica was inserted between two films, followed by annealing with the FTFA method. The ZnO nanorods are regrown when zinc acetate dihydrate and zinc...

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Published inACS applied materials & interfaces Vol. 7; no. 1; pp. 873 - 879
Main Authors Nam, Giwoong, Park, Youngbin, Ji, Iksoo, Kim, Byunggu, Lee, Sang-heon, Kim, Do Yeob, Kim, Soaram, Kim, Sung-O, Leem, Jae-Young
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 14.01.2015
Subjects
regrowth
photoluminescence
spin-coating method
zinc chloride
zinc oxide
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Summary:In this study, we report a novel regrowth method of sol–gel-prepared ZnO films using a vapor-confined face-to-face annealing (VC-FTFA) technique in which mica was inserted between two films, followed by annealing with the FTFA method. The ZnO nanorods are regrown when zinc acetate dihydrate and zinc chloride (ZnCl2) are used as the solvent, because these generate ZnCl2 vapor. The near-band-edge emission intensity of the ZnO nanorods was enhanced through the VC-FTFA method, increasing significantly by a factor of 56 compared to that of ZnO films annealed in open air at 700 °C. Our method may provide a route toward the facile fabrication of ZnO nanorods.
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ISSN:1944-8244
1944-8252
DOI:10.1021/am507439e