Field Emission of a Single In-Doped ZnO Nanowire

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• 作者：Yunhua Huang ; Yue Zhang ; Yousong Gu ; Xuedong Bai ; Junjie Qi ; Qingliang Liao ; Juan Liu
• 刊名：Journal of Physical Chemistry C
• 出版年：2007
• 出版时间：July 5, 2007
• 年：2007
• 卷：111
• 期：26
• 页码：9039 - 9043
• 全文大小：250K
• 年卷期：v.111,no.26(July 5, 2007)
• ISSN：1932-7455

文摘

In-doped ZnO nanowires were successfully fabricated by thermal evaporation of a powder mixture ofZn, In₂O₃, and graphite. Field emission of individual In-doped and pure ZnO nanowire was observed in situby a transmission electron microscopy. The results show that In-doped ZnO nanowires showed an enhancedfield emission properties. First-principle density functional calculations were performed to calculate theelectronic structure of the In-doped and pure ZnO in order to explain the observed field emission properties.A two-band field emission mechanics was proposed to explain the enhanced field emission from n-typedoping.