有机溶剂对氧化铋纳米结构形貌和场发射性能的影响  

Influence of Organic Solvent on Nanostructure and Field Emission Characteristics of Bismuth Oxide

作　　者：林金阳[1] 张永爱[2] 杨尊先[2] 郭太良[2] 

机构地区：[1]福建工程学院信息学院,福州350108 [2]福州大学光电显示技术研究所,福州350002

出　　处：《真空科学与技术学报》2014年第10期1055-1058,共4页Chinese Journal of Vacuum Science and Technology

基　　金：国家自然科学基金项目(61106053);福建省自然科学基金项目(2012D068;2012J01185);福建工程学院科研基金项目(GY-Z13040)

摘　　要：为了研究有机溶剂对化学合成法中生成的氧化铋纳米材料结构及场发射性能的影响,反应过程中,分别添加三个不同剂量的有机溶剂,获得三种产物。利用扫描电镜对其结构进行分析,并进行场发射性能测试,结果表明,线状的氧化铋纳米材料阴极阵列,开启电场最小,为2.6 V/μm,场增强因子最大,为2160,场发射性能最佳,手状结构的氧化铋纳米材料阴极阵列场发射次之,类手状结构最差,最后对有机溶剂对不同形貌产生的原因进行了分析。The bismuth oxide （Bi2O3） was synthesized via chemical route. The impact of the synthesis conditions, particularly the concentrations of organic solvent, on the nano-structure and field emission characteristics of the Bi2O3 were investigated. The nano-structures of the Bi2O3 arrays,screen printed on metal substrate, were characterized with scanning electron microscopy. The preliminary results show that the concentrations of organic solvent significantly affect the nano- structures and its field emission properties. For example, the array of well-defined Bi203 nano-wire with tens of tan long and 50 nm in diameter, synthesized with a solvent of 3 ml oleic acid, 3 ml heptane, and 10 ml acetone, had a lower on-set field （2.6 V/μm） and a higher field enhancement factor （2160） than the other two Bi2O3 ,which were prepared in different concentrations and looked like bundles of nano-rod resembling ＂green-beans＂ with or without surface dendritic structures, respectively.

关 键 词：氧化铋 场发射 化学合成 有机溶剂 

分 类 号：TB332[一般工业技术—材料科学与工程]