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采用酞菁铁高温热解方法,以化学镀铜层为缓冲层,在具有微锥结构阵列的硅基底上制备了CNTs薄膜,并采用二极结构,在20 GW脉冲功率源系统中对其强流脉冲发射特性进行了测试.结果表明:在相同的峰值电场下,CNT薄膜的发射电流峰值随基底微结构单元尺寸的减小而增大,且当脉冲电场的峰值增加时,CNT薄膜的发射电流的峰值增长速度随基底微结构单元尺寸的减小而增大.结合利用有限元分析软件ANSYS模拟计算的微锥阵列结构上表面的电场分布,研究了不同单元尺寸的微锥阵列对碳纳米管薄膜强流脉冲发射能力的影响.

参考文献

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[3] Hae Jin Kim;Jin Joo Choi;Jae-Hee Han;Jae Hong Park;Ji-Beom Yoo.Design and Field Emission Test of Carbon Nanotube Pasted Cathodes for Traveling-Wave Tube Applications[J].IEEE Transactions on Electron Devices,200611(11):2674-2680.
[4] Jeong, J.-W.;Kim, J.-W.;Kang, J.-T.;Choi, S.;Ahn, S.;Song, Y.-H..A vacuum-sealed compact x-ray tube based on focused carbon nanotube field-emission electrons[J].Nanotechnology,20138(8):085201-1-085201-8.
[5] Li, Zhenjun;Yang, Xiaoxia;He, Feng;Bai, Bing;Zhou, Hang;Li, Chi;Dai, Qing.High current field emission from individual non-linear resistor ballasted carbon nanotube cluster array[J].Carbon: An International Journal Sponsored by the American Carbon Society,2015:1-7.
[6] 麻华丽;霍海波;曾凡光;向飞;王淦平.铜基碳纳米管薄膜的制备及其强流脉冲发射特性研究*[J].物理学报,2013(15):158801-1-158801-5.
[7] 麻华丽;霍海波;曾凡光;向飞;王淦平.两种微结构阵列上碳纳米管薄膜强流脉冲发射比较[J].人工晶体学报,2014(8):2098-2101.
[8] Li DC.;Huang SM.;Mau AWH.;Wang ZL.;Dai LM..Structure and growth of aligned carbon nanotube films by pyrolysis[J].Chemical Physics Letters,20005-6(5-6):349-355.
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