CAJ | 학술논문

利用化学镀方法对碳纳米管（carbon nano-tubes,CNTs）表面金属化镀银,研究表面化学镀银碳纳米管的场发射性能。碳纳米管经氧化处理后,表面存在一些羰基（CO）、羧基（—COOH）和羟基（—OH）等活性基团,经敏化、活化处理后,形成金属钯活化中心,进而还原金属银离子,从而获得表面化学镀银的碳纳米管。表面化学镀银碳纳米管阴极的开启电场约为0.19V/μm,当电场强度为0.37V/μm时,最大发射电流达6mA/cm2,场增强因子约为25565。实验结果表明,化学镀银层可以提高碳纳米管的电子传输和热传输能力,提高碳纳米管的场发射电流和发射稳定性,有利于碳纳米管在场发射平板显示领域的应用。
이용화학도방법대탄납미관（carbon nano-tubes,CNTs）표면금속화도은,연구표면화학도은탄납미관적장발사성능。탄납미관경양화처리후,표면존재일사탄기（CO）、최기（—COOH）화간기（—OH）등활성기단,경민화、활화처리후,형성금속파활화중심,진이환원금속은리자,종이획득표면화학도은적탄납미관。표면화학도은탄납미관음겁적개계전장약위0.19V/μm,당전장강도위0.37V/μm시,최대발사전류체6mA/cm2,장증강인자약위25565。실험결과표명,화학도은층가이제고탄납미관적전자전수화열전수능력,제고탄납미관적장발사전류화발사은정성,유리우탄납미관재장발사평판현시영역적응용。
Ag were deposited on the surface of carbon nanotubes （CNTs） by eleetroless palting method, and the field emission properties of CNTs electroless plating with Ag were studied. The carbonyl, carboxyl and hydroxy groups on the surface of CNTs were produced by oxidization in mixed acid. The turn-on field of CNTs electroless plating with Ag was 0.19V/μm, and the maximal emission current achieved 6mA/cm2 at the field of 0. 37 V/μm, which the field enhancement factor was calculated as 25565. The results showed that the improvement of emission stability was attributed to the electronic and thermal conductivity of CNTs, which caused by Ag electroless plating on CNTs surface. The proposed CNT/Ag cathodes possess good field emission properties and have potential for application in field emission displays.