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高质量褶皱多层石墨烯阴极场发射特性的研究

A Study on the Field Emission Characteristics of High-Quality Wrinkled Multilayer Graphene Cathodes.

作者信息

Lv Wenmei, Wang Lian, Lu Yiwei, Wang Dong, Wang Hui, Hao Yuxin, Zhang Yuanpeng, Sun Zeqi, Tang Yongliang

机构信息

School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China.

出版信息

Nanomaterials (Basel). 2024 Mar 30;14(7):613. doi: 10.3390/nano14070613.

DOI:10.3390/nano14070613
PMID:38607147
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11013809/
Abstract

Field emission (FE) necessitates cathode materials with low work function and high thermal and electrical conductivity and stability. To meet these requirements, we developed FE cathodes based on high-quality wrinkled multilayer graphene (MLG) prepared using the bubble-assisted chemical vapor deposition (B-CVD) method and investigated their emission characteristics. The result showed that MLG cathodes prepared using the spin-coating method exhibited a high field emission current density (7.9 mA/cm), indicating the excellent intrinsic emission performance of the MLG. However, the weak adhesion between the MLG and the substrate led to the poor stability of the cathode. Screen printing was employed to prepare the cathode to improve stability, and the influence of a silver buffer layer was explored on the cathode's performance. The results demonstrated that these cathodes exhibited better emission stability, and the silver buffer layer further enhanced the comprehensive field emission performance. The optimized cathode possesses low turn-on field strength (1.5 V/μm), low threshold field strength (2.65 V/μm), high current density (10.5 mA/cm), and good emission uniformity. Moreover, the cathode also exhibits excellent emission stability, with a current fluctuation of only 6.28% during a 4-h test at 1530 V.

摘要

场发射（FE）需要具有低功函数、高导热性和导电性以及稳定性的阴极材料。为满足这些要求，我们基于使用气泡辅助化学气相沉积（B-CVD）方法制备的高质量皱纹多层石墨烯（MLG）开发了场发射阴极，并研究了它们的发射特性。结果表明，采用旋涂法制备的MLG阴极表现出高场发射电流密度（约7.9 mA/cm²），表明MLG具有优异的本征发射性能。然而，MLG与基底之间的弱附着力导致阴极稳定性较差。采用丝网印刷制备阴极以提高稳定性，并探讨了银缓冲层对阴极性能的影响。结果表明，这些阴极表现出更好的发射稳定性，并且银缓冲层进一步提高了综合场发射性能。优化后的阴极具有低开启场强（约1.5 V/μm）、低阈值场强（约2.65 V/μm）、高电流密度（约10.5 mA/cm²）和良好的发射均匀性。此外，该阴极还表现出优异的发射稳定性，在1530 V下进行4小时测试期间电流波动仅为6.28%。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/cac66863229e/nanomaterials-14-00613-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/8418c0a1d2a5/nanomaterials-14-00613-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/8649be2a44b0/nanomaterials-14-00613-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/4b0d3450a6dc/nanomaterials-14-00613-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/56ebce74621a/nanomaterials-14-00613-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/d623553c9a07/nanomaterials-14-00613-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/707b061f01f8/nanomaterials-14-00613-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/8946f07522bb/nanomaterials-14-00613-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/9882dfaac44e/nanomaterials-14-00613-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/5b4bbb09fc97/nanomaterials-14-00613-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/cac66863229e/nanomaterials-14-00613-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/8418c0a1d2a5/nanomaterials-14-00613-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/8649be2a44b0/nanomaterials-14-00613-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/4b0d3450a6dc/nanomaterials-14-00613-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/56ebce74621a/nanomaterials-14-00613-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/d623553c9a07/nanomaterials-14-00613-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/707b061f01f8/nanomaterials-14-00613-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/8946f07522bb/nanomaterials-14-00613-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/9882dfaac44e/nanomaterials-14-00613-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/5b4bbb09fc97/nanomaterials-14-00613-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2c73/11013809/cac66863229e/nanomaterials-14-00613-g011.jpg

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本文引用的文献

1
Enhanced Field Emission of Single-Wall Carbon Nanotube Cathode Prepared by Screen Printing with a Silver Paste Buffer Layer.通过丝网印刷银浆缓冲层制备的单壁碳纳米管阴极的增强场发射
Nanomaterials (Basel). 2022 Jan 4;12(1):165. doi: 10.3390/nano12010165.
2
Direct CVD Growth of Graphene on Technologically Important Dielectric and Semiconducting Substrates.石墨烯在重要技术介电和半导体衬底上的直接化学气相沉积生长
Adv Sci (Weinh). 2018 Sep 22;5(11):1800050. doi: 10.1002/advs.201800050. eCollection 2018 Nov.
3
Direct CVD Growth of Graphene on Traditional Glass: Methods and Mechanisms.
传统玻璃上的石墨烯直接 CVD 生长：方法与机制。
Adv Mater. 2019 Mar;31(9):e1803639. doi: 10.1002/adma.201803639. Epub 2018 Nov 15.
4
Self-organized multi-layered graphene-boron-doped diamond hybrid nanowalls for high-performance electron emission devices.自组织多层石墨烯-硼掺杂金刚石杂化纳米墙用于高性能电子发射器件。
Nanoscale. 2018 Jan 18;10(3):1345-1355. doi: 10.1039/c7nr06774g.
5
Controlled synthesis of large-scale, uniform, vertically standing graphene for high-performance field emitters.控制合成大规模、均匀、垂直排列的石墨烯，用于高性能场发射器。
Adv Mater. 2013 Jan 11;25(2):250-5. doi: 10.1002/adma.201203902. Epub 2012 Nov 8.
6
Intense superradiant x rays from a compact source using a nanocathode array and emittance exchange.利用纳米阴极阵列和发射度交换产生紧凑源的高强度超辐射 X 射线。
Phys Rev Lett. 2012 Jun 29;108(26):263904. doi: 10.1103/PhysRevLett.108.263904. Epub 2012 Jun 26.
7
Optimize the field emission character of a vertical few-layer graphene sheet by manipulating the morphology.通过控制形态优化垂直少层石墨烯片的场发射特性。
Nanotechnology. 2012 Jan 13;23(1):015202. doi: 10.1088/0957-4484/23/1/015202.
8
Electron field emission from screen-printed graphene films.丝网印刷石墨烯薄膜的电子场发射。
Nanotechnology. 2009 Oct 21;20(42):425702. doi: 10.1088/0957-4484/20/42/425702. Epub 2009 Sep 25.
9
Raman spectrum of graphene and graphene layers.石墨烯及石墨烯层的拉曼光谱。
Phys Rev Lett. 2006 Nov 3;97(18):187401. doi: 10.1103/PhysRevLett.97.187401. Epub 2006 Oct 30.
10
Miniaturized gas ionization sensors using carbon nanotubes.使用碳纳米管的小型化气体电离传感器。
Nature. 2003 Jul 10;424(6945):171-4. doi: 10.1038/nature01777.