摘要
以NaOH和Bi(NO3)3.5H2O为原料,以庚烷、油酸和丙酮为分散剂,在室温下,制备氧化铋纳米线材料。通过扫描电子显微镜(SEM)和X射线衍射分析仪(XRD)分析产物结构和形貌,分析可知该氧化铋纳米线直径约50nm,长度几微米至几十微米之间。通过丝网印刷,制备氧化铋纳米线阵列,并进行场发射性能测试,结果表明,当电流密度0.1μA/cm2时,开启电场2.6V/μm,良好的场发射性能说明氧化铋纳米线在场发射平板显示及真空电子器件方面具有较好的应用潜力。
Bi2O3 nanowires were synthesized from NaOH and Bi（NO3）3·5H2O with surfactants oleic acid,heptane and acetone added at room-temperature.The nanowires have a diameter of about 50nm and a length in the range of several to tens of micrometers.X-ray diffraction（XRD） analysis and scanning electron microscopy（SEM） were employed to characterize the structure and morphology of these structures.The cathode array was prepared by screen-printed.The field emission of the sample started at a turn-on field of 2.6V/μm at a current density of 0.1μA/cm2.This type of Bi2O3 nanowires can be applied as field emitters in displays as well as vacuum electric devices.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2011年第4期757-759,共3页
Journal of Functional Materials
基金
国家高技术研究发展计划(863计划)重大专项资助项目(2008AA03A313)
福建省自然科学基金资助项目(2009J05145)
关键词
氧化铋
纳米线
场发射
开启电场
Bi2O3
nanowires
field emission
turn-on field
