Electrostatic depolarization in clusters of emitters regularly spaced and with uniform height causes the emission to concentrate on the outer corners, suppressing the relative emission contribution from center emitters. In this Letter, we performed extensive three-dimensional computer simulations to show that profiling the height distribution of the emitters significantly compensates for the electrostatic depolarization and homogenizes the emitted current per emitter. Importantly, a minimum standard deviation on the currents from individual emitters shows the route to find the ellipsoidal height profile to achieve optimized conditions. This implies a maximized macroscopic current extractable from the device since every emitter contributes approximately the same before burning out. Our findings are expected to guide developments on new field electron emission devices.
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September 2023
Letter|
September 08 2023
Maximizing the performance of a field emission device by profiling the emitter’s height distribution
Special Collection:
Vacuum Nanoelectronics
Sergey V. Filippov
;
Sergey V. Filippov
a)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Supervision, Validation, Visualization, Writing – original draft)
1
Ioffe Institute
, 26 Politekhnicheskaya, St. Petersburg 194021, Russia
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Fernando F. Dall’Agnol
;
Fernando F. Dall’Agnol
b)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Supervision, Validation, Visualization, Writing – original draft)
2
Department of Exact Sciences and Education (CEE), Universidade Federal de Santa Catarina
, Campus Blumenau, Rua João Pessoa, 2514, Velha, Blumenau, Santa Catarina 89036-004, Brazil
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Eugeni O. Popov
;
Eugeni O. Popov
c)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Supervision, Validation, Visualization, Writing – original draft)
1
Ioffe Institute
, 26 Politekhnicheskaya, St. Petersburg 194021, Russia
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Anatoly G. Kolosko
;
Anatoly G. Kolosko
d)
(Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft)
1
Ioffe Institute
, 26 Politekhnicheskaya, St. Petersburg 194021, Russia
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Thiago A. de Assis
Thiago A. de Assis
e)
(Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Software, Supervision, Validation, Visualization, Writing – original draft)
3
Instituto de Física, Universidade Federal da Bahia, Campus Universitário da Federação
, Rua Barão de Jeremoabo s/n, Salvador, Bahia 40170-115, Brazil
4
Instituto de Física, Universidade Federal Fluminense
, Avenida Litorânea s/n, Niterói, Rio de Janeiro 24210-340, Brazil
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a)
Electronic mail: f_s_v@list.ru
b)
Electronic mail: fernando.dallagnol@ufsc.br
c)
Electronic mail: e.popov@mail.ioffe.ru
d)
Electronic mail: agkolosko@mail.ru
e)
Electronic mail: thiagoaa@ufba.br
J. Vac. Sci. Technol. B 41, 050601 (2023)
Article history
Received:
July 30 2023
Accepted:
August 14 2023
Citation
Sergey V. Filippov, Fernando F. Dall’Agnol, Eugeni O. Popov, Anatoly G. Kolosko, Thiago A. de Assis; Maximizing the performance of a field emission device by profiling the emitter’s height distribution. J. Vac. Sci. Technol. B 1 September 2023; 41 (5): 050601. https://doi.org/10.1116/6.0003016
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