CuO纳米线的制备及电子发射性能的研究  

The research on the preparation and electron emission properties of CuO nanowires

作　　者：王灵婕[1] 王元樟[1] 刘虹[1] 郭太良[2] 杨尊先[2] 叶芸[2] 

机构地区：[1]厦门理工学院光电与通信工程学院,福建厦门361024 [2]福州大学物理与信息工程学院,福州350116

出　　处：《功能材料》2015年第23期23128-23131,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(61307115);厦门理工学院高层次人才资助项目(YKJ13017R)

摘　　要：采用热氧化法成功制备大小均匀的CuO纳米线,采用扫描电子显微镜(SEM)和X射线衍射(XRD)分别表征其形貌和晶体结构,研究了温度对其形貌和结构的影响,并针对其生长机理进行探讨。场致电子发射测试表明,CuO纳米线具有较好的电子发射特性:其开启电场强度为3.75V/μm,电流密度可达0.33mA/cm^2。CuO纳米线有望作为冷阴极材料在场致发射器件上得到应用。The CuO nanowires were successfully synthesized by thermal oxidation,and their morphologies and crystal structures were characterized by SEM( scanning electron microscopy) and XRD( X-ray diffraction). The effect of temperature on morphologies and structures were investigated and its growth mechanism was discussed. The field emission( FE)measurement shows that the CuO nanowries possess high electron emission properties. Its turn-on voltage is only 3. 75 V /μm and its current density was 0. 33 m A /cm^2. These results suggest that the CuO nanowire can be an excellent FE material candidate.

关 键 词：纳米材料 CUO 场致发射 

分 类 号：TN141[电子电信—物理电子学] TN103