Planar nanosized field emission cathodes on the basis of graphene/semi-insulating silicon carbide fabricated by focused ion beam

Jityaev, I. L.; Агеев, О. А.; Svetlichnyi, A. M.; Kolomiytsev, A. S.; Spiridonov, O. B.

doi:10.1088/1742-6596/741/1/012011

J. Phys.: Conf. Ser.

2016

DOI: 10.1088/1742-6596/741/1/012011

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Planar nanosized field emission cathodes on the basis of graphene/semi-insulating silicon carbide fabricated by focused ion beam

I. L. Jityaev

О. А. Агеев

A. M. Svetlichnyi

et al.

Abstract: Abstract. We investigate the field emission properties of planar graphene structures with nanosized interelectrode distance. The graphene was obtained by thermal decomposition of silicon carbide in vacuum. Planar field emission structures on the basis of graphene on semiinsulating SiC were fabricated by using focused ion beam. We have performed current-voltage measurement on graphene/SiC field emission cathodes. The planar field emission structures showed a threshold voltage less than 1 V.

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Cited by 11 publications

References 27 publications

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High‐Performance Planar Field‐Emission Photodetector of Monolayer Tungsten Disulfide with Microtips

Tian,

Zeng,

Xing

et al. 2023

Small

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Monolayer tungsten disulfide (ML WS2) is believed as an ideal photosensitive material due to its small direct bandgap, large exciton/trion binding energy, high carrier mobility, and considerable quantum conversion efficiency. Compared with other photosensitive devices, planar field emission (FE)‐type photodetectors with a full‐plane structure should simultaneously have rapider switching speed and lower power consumption. In this work, ML WS2 microtips are fabricated by electron beam lithography (EBL) way and used to construct a planar FE‐type photodetector. By optimization design, ML WS2 with three microtips can exhibit the maximum current density as high as 52 A cm−2 (@300 V µm−1), and the largest photoresponsivity is up to 6.8 × 105 A W−1 under green light irradiation, superior to that of many other ML transition metal dichalcogenide (TMDC) detectors. More interestingly, ML WS2 devices with microtips can effectively solve the contradictory problem between large photoresponsivity and rapid switching speed. The excellent photoresponse performances of ML WS2 with microtips should be attributed to their high carrier mobility, sharp emission edge, ultrahigh quantum yield, and unique planar FE device structure. Our research may shed new light on exploring the fabrication technology and photosensitive mechanism of two dimensional (2D) material‐based planar FE photodetectors.

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High‐Performance Planar Field‐Emission Photodetector of Monolayer Tungsten Disulfide with Microtips

Tian,

Zeng,

Xing

et al. 2023

Small

View full text Add to dashboard Cite

show abstract

Large-scale fabrication of free-standing and transparent SiC nanohole array with tailored structures

Zhao

Chen

Wang

et al. 2018

Ceramics International

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Nanoscale profiling of multilayer graphene films on silicon carbide by a focused ion beam

Kolomiytsev

Jityaev

Svetlichnyi

et al. 2020

Diamond and Related Materials

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Planar nanosized field emission cathodes on the basis of graphene/semi-insulating silicon carbide fabricated by focused ion beam

Cited by 11 publications

References 27 publications

High‐Performance Planar Field‐Emission Photodetector of Monolayer Tungsten Disulfide with Microtips

High‐Performance Planar Field‐Emission Photodetector of Monolayer Tungsten Disulfide with Microtips

Large-scale fabrication of free-standing and transparent SiC nanohole array with tailored structures

Nanoscale profiling of multilayer graphene films on silicon carbide by a focused ion beam

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