碳纳米管/膨润土复合膜的附着性能及场发射性能

摘要

碳纳米管(CNT)阴极膜与基底的附着性能严重影响场发射的均匀性和稳定性.提出一种制作CNT/膨润土(BP)复合膜的方法.通过添加纳米尺度BP作为填料,使BP与CNT间产生插层效应,进而减小CNT膜的间隙势牟,改善CNT与基底间的接触性能.测试结果显示,CNT/BP复合膜与基底的附着性能得到明显改善,并且使场发射均匀性和稳定性均得到提高.%Uniformity and stability of field emission are seriously influenced by adhesive properties between carbon nanotubes(CNT) and substrate. CNT/bentonite( bentonite power, BP) compound film are fabricated.Interlayer created by CNT and the basement decrease potential barrier of CNT film by adding BP, and thus contact performance is improved. Test shows that adhesive performance of CNT/BP film is enhanced. Moreover, uniformity and stability of field emission increase distinctly.