Field Electron Emission from a Tungsten Cathode Coated with Silica
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F24%3A00588158" target="_blank" >RIV/68081731:_____/24:00588158 - isvavai.cz</a>
Result on the web
<a href="https://jjp.yu.edu.jo/index.php/jjp/article/view/330" target="_blank" >https://jjp.yu.edu.jo/index.php/jjp/article/view/330</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.47011/17.2.6" target="_blank" >10.47011/17.2.6</a>
Alternative languages
Result language
angličtina
Original language name
Field Electron Emission from a Tungsten Cathode Coated with Silica
Original language description
The aim of this paper is to study the field electron emission of silicon dioxide-coated tungsten cathode. Tungsten tips of less than 100 nm radius were prepared by electrochemical etching. The size of silicon dioxide (silica) nanoparticles ranged from 3 to 15 nm. Field emission studies were conducted using a field emission microscope under high vacuum conditions. The images of the cathodes under investigation were taken using scanning electron microscopy. The results of the study of cathodes by energy-dispersive X-ray spectroscopy revealed tungsten as the dominant element with minimal silicon detected on the coated cathode surfaces. Murphy-Good plots were used to illustrate and analyze the current-voltage characteristics of the cathodes before and after coating. Moreover, patterns of electron emission both before and after the coating procedure were examined. The stability test of the emission current was performed on the composite cathode. The results indicate that the composite tungsten cathode performs better than the uncoated cathode, demonstrating increased emission current magnitude and enhanced stability of the emission current. The study presents silica nanoparticles as potential candidates for field emission sources coating across different applications.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20201 - Electrical and electronic engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Jordan Journal of Physics
ISSN
1994-7607
e-ISSN
1994-7615
Volume of the periodical
17
Issue of the periodical within the volume
2
Country of publishing house
JO - JORDAN
Number of pages
10
Pages from-to
187-196
UT code for WoS article
001282328100006
EID of the result in the Scopus database
2-s2.0-85199938846