ZnO纳米材料制备及其场发射性能的研究

功能材料, 2010, 41(2): 288-291.

ZnO纳米材料制备及其场发射性能的研究

1.福州大学,物理与信息工程学院,福建,福州,350002

2.福州大学,物理与信息工程学院,福建,福州,350002

3.福州大学,物理与信息工程学院,福建,福州,350002

4.福州大学,物理与信息工程学院,福建,福州,350002

基金项目: 福建省科技重大专项(2004HZ01-2) 国家高技术研究发展计划(863计划)平板显示重大专项资助项目(2008AA03A313) 福建省教育厅资助重点项目(JA09003) 福建省科技三项经费资助项目(2006F5061)

关键词： ZnO纳米材料 , 水热法 , 表面形貌 , 场发射性能

Study of preparation and field emission properties of ZnO nanomaterial

LIN Zhi-xian ^1, , ZHANG Yong-ai ^2, , QIN Hua-fang ^3, , GUO Tai-liang ^4,

1.福州大学,物理与信息工程学院,福建,福州,350002

2.福州大学,物理与信息工程学院,福建,福州,350002

3.福州大学,物理与信息工程学院,福建,福州,350002

4.福州大学,物理与信息工程学院,福建,福州,350002

Keywords： ZnO nanomaterial , hydrothermal method , surface morphology , field emission performance

采用水热法制备形貌和尺寸各异的纳米ZnO材料.用X射线衍射分析仪(XRD)和扫描电子显微镜(SEM)测试产物结构和表面形貌,分析影响纳米ZnO材料生长的因素,探讨纳米ZnO的生长机理.研究了各种形貌ZnO阵列的场致发射特性.实验结果表明,在各种ZnO纳米结构中,纳米管的场致发射性能最好,其最大电流密度可达到0.2mA/cm~2,开启场强2.5V/μm,为寻求良好场发射性能的ZnO纳米材料提供了一个可行的途径.

A variety of morphologies and dimension of ZnO nanomaterial was synthesized using hydrothermal methods.The structure and morphologies of ZnO products were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM) respectively.The impact of the growth of ZnO material factors was analyzed and the mechanism of growth was discussed too.The characteristics of field emission for a variety of morphologies ZnO array were studied.The experimental results show that field emission performance of nano-tube ZnO was the best in all of various structure of ZnO nanomaterial.The maximum current density reached 0.2mA/cm~2 and its turn-on field was 2.5V/μm.The results provide a feasible method for improving field emission properties of ZnO nanomaterial.

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