泡孔结构对碳纳米管/聚合物泡沫场发射的增强
Improvement Field Emission of Carbon Nanotube/Polyurethane Foam Composites by Cellular Wall Field Enhancement Structure
文中采用改进的Hummer氧化法制备了氧化石墨烯。分离提纯后进一步采用微孔滤膜过滤可以得柔性的石墨烯膜。利用加热还原的方法可以的到可用于场发射的柔性石墨烯自支撑膜。这种石墨烯膜的开启场为2.34/μm，可以作一种柔性的电子发射阴极。
In this paper, the electron field-emission characteristics of carbon-nanotube-polymer composites produced by static casting were reported. An emission current density of 1 mA/cm2 was obtained at an operating electric field of 1.4 V/μm with a turn-on field of 0.6 V/μm at 0.01 mA/cm2 by using 2% volume fraction of CNT in polymer composites. Such low field is resulted from a high field enhancement factor of 2.34×104 due to the combined effects of the high intrinsic aspect ratio of carbon nanotubes and the typical cellular structure of polymer composites.
陈涛、曾葆青
真空电子技术电子元件、电子组件
电子物理学场致电子发射碳纳米管聚合物
electron physicsfield emissioncarbon nanotubespolymer
陈涛,曾葆青.泡孔结构对碳纳米管/聚合物泡沫场发射的增强[EB/OL].(2012-03-01)[2025-08-16].http://www.paper.edu.cn/releasepaper/content/201203-27.点此复制
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