钛基底的纳米金刚石掺混纳米碳管的场发射特性

在纳米金刚石场发射的基础上, 研究了纳米金刚石掺混纳米碳管的场发射特性。采用电泳沉积法形成了纳米金刚石与纳米碳管的复合涂层, 经热处理后制备出阴极样品, 然后进行微观表征, 再进行场发射特性测试与发光测试。结果表明, 与未掺混的纳米金刚石阴极样品相比, 复合涂层阴极样品的场发射开启电场明显减小, 场发射电流提高, 在较低的电场下阳极表面荧光粉就可以发光, 但发光不均匀, 出现了“边沿发光”的现象。分析了纳米金刚石掺混纳米碳管场发射性能提高的机理, 是由于纳米碳管掺入之后, 涂层的电子输运能力得到增强, 涂层中有效发射体的数目增加。最后, 解释了“边沿发光”现象的成因。

Abstract

On the basis of field emission characteristics of nano-diamond, the field emission characteristics of diamond doped CNTs were studied. The composite coating of diamond and CNTs was formed using electrophoretic deposition, and the cathode samples were fabricated after heat treatment. The microstructure, field emission and luminescence performance of the samples were characterized. Compared with the undoped diamond cathode, the turn-on field of the composite coating cathode decreases obviously, the field emission current increases. The fluorescent powder on the anode surface can luminescent under lower electric field, but the luminescence is nonuniform and the phenomena of ‘edge luminescence’ occurs. The improvement of the field emission characteristics is due the enhancement of the electron transportation capacity of the composite coating and the increase of the effective emitter number. Finally, the reasons of ‘edge luminescence’ were explained.

参考文献

[1] Yang Y N, Zhang Z Y, Yan J F, et al. Field emission characteristics of nano-zinc oxide nano-diamond ［J］. Acta Photon. Sinica (光子学报), 2015, 44(2):0216001-1-5 (in Chinese).

[2] Vijay C, Robert H, Paul W M, et al. Direct observation of electron emission from the grain boundaries of chemical vapour deposition diamond films by tunneling atomic force microscopy ［J］. Appl. Phys. Lett., 2014, 104(17):171907-1-3.

[3] Yuan G, Gu D B, Gu C Z, et al. Field emission from single diamond particle ［J］. Acta Phys. Sinica (物理学报), 2007, 56(1):143-146 (in Chinese).

[4] Wang T, Li R S, Pan X J, et al. Improvement of field emission characteristics of copper nitride films with increasing copper content ［J］. Chin. Phys. Lett., 2009, 26(6):066801-1-5.

[5] Yang Y N, Zhang Z Y, Zhang F C, et al. Temperature dependence of field emission of nano-diamond ［J］. Acta Phys. Sinica (物理学报), 2010, 59(4):2666-2671 (in Chinese).

[6] Zhang L, Liang H, Xu T X, et al. Microstructure and basic properties of BSTO dielectric materials ［J］. Pizeoelect. Acoustoopt.(压电与声光), 2002, 24(6):468-472 (in Chinese).

[7] Qian K Y, Lin Y K, Xu D, et al. Research on carbon-based cold cathode field emission materials ［J］. Mater. Rev.(材料导报), 2004, 18(5):12-15 (in Chinese).

[8] Zeng L Y, Wang W B, Liang J Q, et al. Diamond/Ag composites: Synthesis, electrophoretic deposition, and field emission characteristics ［J］. Chin. J. Liq. Cryst. Disp.(液晶与显示), 2007, 22(2):134-1398 (in Chinese).

[9] Cao J, Tong Y, Xia F, et al. Field emission characteristics of single wall carbon nanotube rope at the presence of dielectric medium ［J］. Chin. J. Lumin.(发光学报), 2013, 34(7):882-887 (in Chinese).

[10] Zhu C C, Liu X H. Advances of carbon nanotubes field emission display ［J］. Chin. J. Lumin.(发光学报), 2005, 26(5):557-563 (in Chinese).

[11] Kuttel O M, Grining O, Emmenegger C, et al. Electron field emission from phase pure nanotube films grown in a methane/hydrogen plasma ［J］. Appl. Phys. Lett., 1998, 73(15):2113-2115.

[12] Guo D B, Yuan G, Song C H, et al. Field emission of carbon nanotubes ［J］. Acta Phys. Sinica (物理学报), 2007, 56(10):6114-6117 (in Chinese).

[13] Tian J S, Li J, Wang J F, et al. Research on the field emission properties of carbon nanotubes ［J］. Acta Photon. Sinica(光子学报), 2003, 32(12):1442-1445 (in Chinese).

[14] Jonge N, Bonard J M. Carbon nanotube electron sources and applications ［J］. Phil. Trans. R. Soc. Lond. A, 2004, 362(1823):223-226.

[15] Ding S Y, Lei W. Research of individually transistor-controlled bake-gate carbon nanotube arrays on SOI substrate ［J］. Chin. J. Electron. Dev.(电子器件), 2014, 37(4):597-600 (in Chinese).

[16] Liu P, Liu L, Wei Y, et al. Enhanced field emission from imprinted carbon nanotube arrays ［J］. Appl. Phys. Lett., 2006, 89(7):073101-1-3.

[17] Cui Y K, Zhang X B, Lei W, et al. Vaporation of tetrapod ZnO nanostructures and its influence on the field-emission performance ［J］. IEEE Electron. Dev. Lett., 2010, 31:479-481.

[18] Asthana A, Yap Y K, Yassar R S. Field emission from zinc oxide nanobelts ［J］. J. Nanosci. Nanotechnol., 2015, 15(3):2277-2282.

[19] Sunga W Y, Kima W J, Lee S M, et al. Field emission characteristics of CuO nanowires by hydrogen plasma treatment ［J］. Vacuum, 2007, 81(7):851-856.

[20] Dong J H, Shan Y. Field emission property of carbon nanotubes/diamond composites ［J］. Chin. J. Lumin.(发光学报), 2010, 31(4):595-598 (in Chinese).

[21] Yang Y N, Zhang Z Y, Zhang F C, et al. The field emission characteristics of titanium-doped nano-diamonds ［J］. Chin. Phys. Lett., 2012, 29(1):018103-1-5.

[22] Yan J K, Chang L. Chemical vapor deposition of uniform and high-equality diamond films by bias-enhanced nucleation method ［J］. Thin Solid Films, 2006, 12(1-2):230-234.

[23] Pan J Y. Research on Preparation and Property Improvement of Carbon Nanotubes Cathode Films ［D］. Xian: Xian Jiaotong University, 2008 (in Chinese).

[24] Yang Y N. Study on Key Technologies of Nano-diamond Composite Coating Field Emission ［D］. Xian: Northwest University, 2010 (in Chinese).

[25] Zhai C X. Study on The Technology Process of Ti-based Nano-diamond Coating Field Emission Cathode ［D］. Xian: Northwest University, 2008 (in Chinese).

[26] Pfeiffer R, Kuzmany H, Knoll P, et al. Evidence for trans-polyacetylene in nano-crystalline diamond films ［J］.Diamond Relat. Mater., 2003, 12(3-7):268-271.

刘巧平, 李伟霞, 杨延宁, 张志勇, 翟春雪, 崔红卫. 钛基底的纳米金刚石掺混纳米碳管的场发射特性[J]. 发光学报, 2015, 36(9): 1013. LIU Qiao-ping, LI Wei-xia, YANG Yan-ning, ZHANG Zhi-yong, ZHAI Chun-xue, CUI Hong-wei. Field Emission Characteristics of CNTs Mixed Nano-diamond Deposited on Titanium Substrate[J]. Chinese Journal of Luminescence, 2015, 36(9): 1013.

钛基底的纳米金刚石掺混纳米碳管的场发射特性

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