Large field emission current and density from robust carbon nanotube cathodes for continuous and pulsed electron sources
文献类型：期刊论文
| 作者 | Chen JT(陈江涛) ; Yang BJ(杨兵军); Liu XH(刘夏辉); Yang J(杨娟); Cui LF(崔琳凡); Yan XB(阎兴斌); Yan XB(阎兴斌); Yan XB(阎兴斌); Yan XB(阎兴斌)
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| 刊名 | Science China Materials
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| 出版日期 | 2017 |
| 卷号 | 60期号:4页码:335-342 |
| 关键词 | field emission carbon nanotube cold electron source |
| ISSN号 | 2095-8226 |
| 通讯作者 | 阎兴斌 |
| 中文摘要 | 本文采用丝网印刷技术制备了具有高粘接性能的碳纳米管冷阴极. 该碳纳米管冷阴极在直流连续及脉冲场下均具有优异的场发射 性能, 同时具有高发射电流密度与发射总电流, 可以满足高功率器件对冷阴极电子源的使用需求. 在直流连续场下, 该冷阴极的电流发射 密度可达到207.0 mA cm−2 (电场强度为4.5 V μm−1);在脉冲场(200 Hz, 10 μs)激发下, 峰值电流密度最高可达4.5 A cm−2(电场强度为10.3 V μm−1), 同时具有高的峰值发射电流(315.8 mA). 为观察阴极发射均匀性, 采用荧光板为阳极进行实时监测, 发现此印刷阴极发射较均一; 稳 定性测试表明该阴极在连续及脉冲场下均具有良好的发射稳定性. 该冷阴极同时具有高电流密度及高发射电流, 可以满足高功率真空电 子器件的使用要求, 在真空微纳电子器件中显示出巨大的应用前景. |
| 英文摘要 | Highly adhesive cold cathodes with high field emission performance are fabricated by using a screen-printing-method. The emission density of carbon nanotube (CNT) cold cathode reaches 207.0 mA cm(-2) at an electric field of 4.5 V mu m(-1) under continuous driving mode, and high peak current emission of 315.8 mA corresponding to 4.5 A cm(-2) at the electric field of 10.3 V mu m(-1) under pulsed driving mode. The emission patterns of the cold cathodes are of excellent uniformity that was revealed by vivid luminescent patterns of phosphor coated transparent indium tin oxide (ITO) anode. The cold cathodes also exhibit highly stable emission under continuous and pulsed driving modes. The high adhesion of CNTs tomolybdenum substrates results in robust cold cathodes and is responsible for the high field emission performance. This robust CNT emitter could meet the operating requirements of continuous and pulsed electron sources, and it provides promising applications in various vacuummicro/nanoelectronic devices. |
| 学科主题 | 材料科学与物理化学 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000401869700006 |
| 源URL | [http://210.77.64.217/handle/362003/21441]  |
| 专题 | 兰州化学物理研究所_清洁能源化学与材料实验室 兰州化学物理研究所_固体润滑国家重点实验室 |
| 通讯作者 | Yan XB(阎兴斌); Yan XB(阎兴斌); Yan XB(阎兴斌) |
| 作者单位 | Laboratory of Clean Energy Chemistry andMaterials, State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China |
| 推荐引用方式 GB/T 7714 | Chen JT,Yang BJ,Liu XH,et al. Large field emission current and density from robust carbon nanotube cathodes for continuous and pulsed electron sources[J]. Science China Materials,2017,60(4):335-342. |
| APA | Chen JT.,Yang BJ.,Liu XH.,Yang J.,Cui LF.,...&阎兴斌.(2017).Large field emission current and density from robust carbon nanotube cathodes for continuous and pulsed electron sources.Science China Materials,60(4),335-342. |
| MLA | Chen JT,et al."Large field emission current and density from robust carbon nanotube cathodes for continuous and pulsed electron sources".Science China Materials 60.4(2017):335-342. |
入库方式： OAI收割
来源：兰州化学物理研究所
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