旋涂法制备碳纳米管阴极及其场发射性能的测试  

Fabrication and Test of Carbon Nanotubes Field Emission Cathode Made by Spin-Coating Technique

作　　者：钱开友[1] 颜丙勇[1] 王芸[1] 叶枝灿[1] 徐东[1] 蔡炳初[1] 

机构地区：[1]薄膜与微细技术教育部重点实验室微米/纳米加工技术国家级重点实验室

出　　处：《材料科学与工程学报》2006年第1期33-35,共3页Journal of Materials Science and Engineering

基　　金：上海市科技发展基金资助(0214nm031)

摘　　要：采用Y2O3和Ni作催化剂,在H2和He混合气体气氛下通过弧光放电法得到高纯度的单壁碳纳米管。在用热氧化提纯法对高纯度碳纳米管产物进行进一步提纯后,用这种碳纳米管粉末与酒精配制成悬浮液,通过旋涂、干燥、退火等工艺得到碳纳米管阴极薄膜。I-V测试表明用该法得到的碳纳米管薄膜具有良好的电子场致发射性能。A novel fabrication process of carbon nanotubes cathode emitters is presented in the work. Single-walled carbon nanotubes （SWNTs） with high purity have been synthesized by de are discharge evaporation of a carbon electrode including Ni and Y2O3 catalysts in H2-He mixture gas. As-grown SWNTs are purified by gas phase oxidation in air at 350℃ and then mixed uniformly with alcohol. We obtain SWNTs cathode film by spin-coating, drying and annealing the SWNTs suspension on the Si substrate, The tests show that the emitter made by the simple method has good properties of electron field emission, following the Fowler-Nordheim behavior.

关 键 词：旋涂法 弧光放电法 碳纳米管 场发射 

分 类 号：TB383[一般工业技术—材料科学与工程]