碳纳米管场发射阴极电泳法制备及场发射特性研究  

Electrophoretic Deposition and Field Emission Properties of Carbon Nanotubes Field Emission Cathode

作　　者：文永亮[1] 林祖伦[1] 王小菊[1] 权祥[1] 张国宏[1] 

机构地区：[1]电子科技大学光电信息学院,成都610054

出　　处：《电子器件》2010年第6期659-663,共5页Chinese Journal of Electron Devices

摘　　要：采用电泳沉积法在玻璃基板上成功制备出碳纳米管场发射阴极,采用扫描电子显微镜观察薄膜表面形貌,并对制备的碳纳米管阴极进行场发射测试。实验结果表明电泳2min沉积的碳纳米管薄膜均匀连续且具有较好的场发射特性,其开启电场为3.1V/μm,当外加电场强度为11.5V/μm时场发射电流密度达到11.33mA/cm2,经过10V/μm的电场激活处理后样品具有较好的场发射稳定性。The films of carbon nanotubes（CNTs）had been successfully deposited by electrophoresis deposition（EPD）.The surface morphologies of the films formed were studied by scanning electron microscopy（SEM）.Field emission characteristics of the films were studied.The results indicate that the CNTs thin film electrophoretically deposited for 2 min is uniform and continuous and has better field emission properties with a turn on electric field of 3.1 V/μm and a maximum emission current density of 11.33 mA/cm2 at 11.5 V/μm.After activation of the electric field at 10 V/μm,the CNTs films have better field emission stability.

关 键 词：碳纳米管 电泳沉积 场发射 

分 类 号：O642.4[理学—物理化学]