Open AccessUltra‐thin graphitic carbon film for high‐power electronics applications
Author(s) -
Kuzhir Polina,
Gurinovich Alexandra,
Volynets Nadezhda,
Gurnevich Evgeny,
Demidenko Marina,
Maksimenko Sergey,
Baturkin Sergey,
Kaplas Tommi,
Svirko Yuri
Publication year - 2017
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2016.0599
Subject(s) - cathode , materials science , nanosecond , optoelectronics , diode , pyrolytic carbon , graphite , carbon fibers , current density , planar , carbon film , explosive material , thin film , nanotechnology , electrical engineering , optics , composite material , chemical engineering , computer science , chemistry , physics , laser , computer graphics (images) , organic chemistry , quantum mechanics , pyrolysis , composite number , engineering
A novel explosive‐emission cathode capable to produce high‐current nanosecond electron bunches and enable tuning in terms of size is proposed and demonstrated to performance fit the particular problem. The record parameters, average diode current 6.5 kA and voltage 410 kV, are achieved by covering a conventional, planar copper cathode with a carbon film being composed of graphitic pyrolytic carbon (GrPyC). The demonstrated plasma expansion velocity and current density are comparable with those obtained with conventional graphitic cathodes. However, in contrast to purely graphite cathodes, the shape, size and surface profile of the proposed hybrid GrPyC/Cu cathodes can be readily adjusted allowing adjustments to fit requirements of a variety of high‐current electronic applications.