Study of nanometric thin pyrolytic carbon films for explosive electron emission cathode in high-voltage planar diode

被引：9

作者：

Baryshevsky, Vladimir ^{[1
]}

Belous, Nikolai ^{[1
]}

Gurinovich, Alexandra ^{[1
]}

Gurnevich, Evgeny ^{[1
]}

Kuzhir, Polina ^{[1
,2
]}

Maksimenko, Sergey ^{[1
,2
]}

Molchanov, Pavel ^{[1
]}

Shuba, Mikhail ^{[1
]}

Roddatis, Vladimir ^{[3
,4
]}

Kaplas, Tommi ^{[5
]}

Svirko, Yuri ^{[5
]}

机构：

[1] Belarusian State Univ, Res Inst Nucl Problems, Minsk 220030, BELARUS

[2] Natl Res Tomsk State Univ, Tomsk 634050, Russia

[3] CIC energiGUNE, Minano 01510, Alava, Spain

[4] Univ Gottingen, Inst Mat Phys, D-37077 Gottingen, Germany

[5] Univ Eastern Finland, Inst Photon, FI-80101 Joensuu, Finland

来源：

THIN SOLID FILMS | 2015年 / 581卷

关键词：

Explosive emission; Cathode; High-current electronics; Pyrolytic carbon; CVD synthesis; Emission stability; High current density; DEPOSITION; GRAPHENE;

D O I：

10.1016/j.tsf.2014.09.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on an experimental study of explosive electron emission properties of cathode made by nanometric thin pyrolytic carbon (PyC) films (2-150 nm) deposited on Cu substrate via methane-based chemical vapor deposition. High current density at level of 300 A/cm(2) in 5 . 10(-5) Pa vacuum has been observed together with very stable explosive emission from the planar cathode. The Raman spectroscopy investigation proves that the PyC films remain the same after seven shots. According to the optical image analysis of the cathode before and after one and seven shots, we conclude that the most unusual and interesting feature of using the PyC films/Cu cathode for explosive emission is that the PyC layer on the top of the copper target prevents its evaporation and oxidation, which leads to higher emission stability compared to conventional graphitic/Cu cathodes, and therefore results in longer working life. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：107 / 111

页数：5

共 18 条

[1] Growth of large-area graphene films from metal-carbon melts [J].