Field Emission from V2O5·nH2O Nanorod Arrays

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• 作者：Wen Chen ; Chiwei Zhou ; Liqiang Mai ; Yueli Liu ; Yanyuan Qi ; Ying Dai
• 刊名：Journal of Physical Chemistry C
• 出版年：2008
• 出版时间：February 21, 2008
• 年：2008
• 卷：112
• 期：7
• 页码：2262 - 2265
• 全文大小：214K
• 年卷期：v.112,no.7(February 21, 2008)
• ISSN：1932-7455

文摘

Hydrated vanadium pentoxide (V₂O₅·nH₂O) nanorod arrays with diameters of ~200 nm and lengths of morethan 5 m have been synthesized via template-based physical wetting of V₂O₅ sols. The V₂O₅·nH₂O nanorodarrays were characterized by scanning electron microscopy, X-ray diffraction, and high-resolution transmissionelectron microscopy. Field-emission (FE) measurements on the V₂O₅·nH₂O nanorod arrays show low turn-on voltages of 6-8 V/m and linear Fowler-Nordheim behaviors. The morphologies and natures of theV₂O₅·nH₂O samples are assumed to cause such good FE performances.