物理化学学报 >> 2010, Vol. 26 >> Issue (09): 2563-2568.doi: 10.3866/PKU.WHXB20100921

材料物理化学 上一篇    下一篇

液相法制备取向ZnO纳米线阵列的场发射特性

张欢, 李梦轲, 张竞, 于丽媛, 刘玲玲, 杨志   

  1. 1. 辽宁师范大学物理与电子技术学院,辽宁大连116029;
    2. 上海交通大学微纳科学技术研究院, 微米/纳米加工技术国家级重点实验室, 薄膜与微细技术教育部重点实验室, 上海200240
  • 收稿日期:2010-05-20 修回日期:2010-05-25 发布日期:2010-09-02
  • 通讯作者: 李梦轲 E-mail:lmknwnu@sina.com
  • 基金资助:

    辽宁省教育厅创新团队(2007T088),辽宁省自然科学基金(20072155),辽宁省重点实验室建设基金,辽宁省博士后科研启动资金(20081081)及国家自然科学基金(10804040)资助项目

Field Emission Properties of Aligned ZnO Nanowire Arrays Prepared by Simple Solution-PhaseMethod

ZHANG Huan, LI Meng-Ke, ZHANG Jing, YU Li-Yuan, LIU Ling-Ling, YANG Zhi   

  1. 1. School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, Liaoning Province, P. R. China;
    2. National Key Laboratory of Nano/Micro Fabrication Technology, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
  • Received:2010-05-20 Revised:2010-05-25 Published:2010-09-02
  • Contact: LI Meng-Ke E-mail:lmknwnu@sina.com
  • Supported by:

    The project was supported by the Innovation TeamFoundation of Educational Department of Liaoning Province, China (2007T088), Natural Science Foundation of Liaoning Province, China (20072155), Construction Capital for Key Laboratory of Liaoning Province, Doctoral Scientific Research Starting Foundation of Liaoning Province, China (20081081), and National Natural Science Foundation of China (10804040).

摘要:

采用水热合成工艺, 在不同条件下制备了不同的一维取向ZnO 纳米线阵列样品. 用X 射线衍射仪 (XRD)、扫描电镜(SEM)及透射电镜(TEM)对样品的晶体结构和形貌等进行了表征, 对样品的场发射特性进行了 分析和比较, 并用Fowler-Nordheim方程对影响ZnO 纳米线场发射的因素进行了研究. 结果表明, 具有较低生长 密度分布、较高的长径比和较尖锐生长端的ZnO纳米线阵列样品具有较好的场发射特性.

关键词: ZnO, 纳米线阵列, 场发射, 液相法

Abstract:

One-dimensional (1D) aligned ZnO nanowire arrays with different morphologies were synthesized by a solution-phase method. The morphology and microstructure of the products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The field emission property of different ZnO nanowire array samples was compared. The factors that influence the field emission property of the 1DZnOnanowire arrays were analyzed using the Fowler-Nordheimequation. The results showed that the ZnOnanowire samples with the lower areal density, higher aspect ratio, and thin tips showed much better field emission characteristics.

Key words: ZnO, Nanowire array, Field emission, Solution-phase method