Aluminum Foil Mediated Noncatalytic Growth of ZnO Nanowire Arrays on an Indium Tin Oxide Substrate

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• 作者：Hana Yoon ; Kwanyong Seo ; Heesung Moon ; Kumar S. K. Varadwaj ; Juneho In ; Bongsoo Kim
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：June 26, 2008
• 年：2008
• 卷：112
• 期：25
• 页码：9181 - 9185
• 全文大小：975K
• 年卷期：v.112,no.25(June 26, 2008)
• ISSN：1932-7455

文摘

Vertically grown ZnO nanowires are synthesized on an indium tin oxide (ITO) substrate via a vapor transport method. The arrays of ZnO nanowire are spontaneously produced from the vapor of a 1:1 mixture of ZnO and Zn powders with no metal catalyst. The key to this synthetic process lies in covering the ITO substrate with an aluminum foil that has a small hole in order to maintain an optimum level of supersaturation. Transmission electron microscopy and X-ray diffraction confirm the single crystalline nature of the wurtzite ZnO nanowires. This is the first report of vertically grown single-crystalline ZnO nanowires on an ITO substrate by gas phase synthesis. Direct growth of vertical ZnO nanowires on a conducting and transparent ITO substrate would find useful applications in field emission displays and solar cells.