Acta Photonica Sinica, Volume. 47, Issue 5, 525002(2018)

Large Electron Emission Current and High Electron Emission Stability of Hexagonal Close-packed Multi-lamination-layer Carbon Nanotube Cathode

LI Yu-kui1、*, LIU Yun-peng2, WU Chao3, and YANG Juan1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    A Hexagonal Close-packed Multi-lamination-layer Carbon Nanotube (HCP-MLL-CNT) cathode is proposed. In this scheme, the silver slurry is sintered to form the substrate silver electrode with a hexagon-shaped edge, which is fabricated on the transparent indium-tin-oxide electrode, with a staggered arrangement of the adjacent substrate silver electrode on the cathode faceplate. Using ZnO and SnO2 powders as mixing materials, the base blending layer is formed between the substrate silver electrode and the single CNT layer, whereas the CNTs in single CNT layers are mainly utilized to emit the cathode electrons. The fabrication process of an HCP-MLL-CNT cathode is discussed in detail, and and the feasibility study which the HCP-MLL-CNT cathode is applicable as an electron source is performed. The sintering method, in which the nitrogen gas is used as a protective gas, was adopted to remove the organic binder materials and other organic impurities of the preparation slurry. The HCP-MLL-CNT cathode was vacuum-sealed into the triode field emission display, and a stable electron emission current was formed. The measurement results indicate that the proposed HCP-MLL-CNT cathode possesses the enhanced electron emission characteristics, a low turn-on electric field of 1.83 V/μm, and the increased maximum electron emission current of 2718.6 μA. The HCP-MLL-CNT cathode revealed an excellent electron emission curve trend, in which the increasing range of electron emission current was approx. 1410.3 μA for the electric field enhancement range from 2.17 V/μm to 3.06 V/μm. The fluctuation of the electron emission current with time was also measured, and a reliable and stabile electron emission for HCP-MLL-CNT cathode was experimentally verified. The green emission image was displayed, which corroborated a good electron emission uniformity and high electron emission luminance of the proposed HCP-MLL-CNT cathode. It is shown that a simple fabrication structure and manufacturing process of the proposed HCP-MLL-CNT cathode possesses a high potential for practical applications.

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    LI Yu-kui, LIU Yun-peng, WU Chao, YANG Juan. Large Electron Emission Current and High Electron Emission Stability of Hexagonal Close-packed Multi-lamination-layer Carbon Nanotube Cathode[J]. Acta Photonica Sinica, 2018, 47(5): 525002

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    Paper Information

    Received: Nov. 29, 2017

    Accepted: --

    Published Online: Sep. 7, 2018

    The Author Email: Yu-kui LI (lyksound@sina.com)

    DOI:10.3788/gzxb20184705.0525002

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