Influence of polishing of stainless steel substrates on field emission properties of carbon nanotubes films

IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839) Pub Date : 2004-09-06 DOI:10.1109/IVESC.2004.1414216

Zhiqin Fan, Zhanling Lu, Shi'e Yang, N. Yao, L. Cheng, Binlin Zhang

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Abstract

Carbon nanotubes (CNTs) were synthesized from methane and hydrogen gas mixture directly on stainless steel plates by microwave plasma chemical vapor deposition (MPCVD). By pretreatment of the substrates such as mechanically polishing, we found the polishing can lower the turn-on field and improve the emission current density. The current density of the un-pretreated sample attains 2.9mA/cm/sup 2/, but the polished sample attains 5.5 mA/cm/sup 2/, at the electric field of 7.5 V//spl mu/m.

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不锈钢衬底抛光对碳纳米管薄膜场发射性能的影响

采用微波等离子体化学气相沉积(MPCVD)技术，将甲烷和氢气直接混合在不锈钢板上合成了碳纳米管(CNTs)。通过对基片进行机械抛光等预处理，发现抛光可以降低导通场，提高发射电流密度。在7.5 V//spl mu/m的电场下，未预处理样品的电流密度达到2.9mA/cm/sup 2/，而抛光样品的电流密度达到5.5 mA/cm/sup 2/。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IVESC 2004. The 5th International Vacuum Electron Sources Conference Proceedings (IEEE Cat. No.04EX839)

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