We build a model to determine the dependency of near-field heat flux on bias voltage using the metal–oxide–semiconductor structures considering gradient distribution of dielectric function. Quantitative dependency of near-field heat flux exchanged by two biased metal–oxide–semiconductor structures on bias voltage is established. The distribution of carrier density and the resultant dielectric function in the semiconductor layer caused by the bias are determined. The corresponding near-field heat flux is calculated using an effective multilayer model. Significant tuning performance is demonstrated, which is due to the increase or decrease in high-frequency surface polariton states induced by the injection or extraction of major carriers. This work deepens the understanding of electrical control of near-field heat transfer with metal–oxide–semiconductor structures, promising for nanoscale thermal management devices and thermal circuits.
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31 October 2022
Research Article|
November 04 2022
Electrically tuning near-field heat flux using metal–oxide–semiconductor structure considering gradient dielectric function distribution
Special Collection:
Thermal Radiation at the Nanoscale and Applications
Deyu Xu;
Deyu Xu
(Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft)
1
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
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Junming Zhao
;
Junming Zhao
a)
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Writing – review & editing)
1
School of Energy Science and Engineering, Harbin Institute of Technology
, Harbin 150001, China
2
Key Laboratory of Aerospace Thermophysics, Ministry of Industry and Information Technology
, Harbin 150001, China
a)Author to whom correspondence should be addressed: jmzhao@hit.edu.cn
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Linhua Liu
Linhua Liu
(Formal analysis, Methodology, Writing – review & editing)
3
School of Energy and Power Engineering, Shandong University
, Qingdao 266237, China
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a)Author to whom correspondence should be addressed: jmzhao@hit.edu.cn
Note: This paper is part of the APL Special Collection on Thermal Radiation at the Nanoscale and Applications.
Appl. Phys. Lett. 121, 181112 (2022)
Article history
Received:
August 31 2022
Accepted:
October 20 2022
Citation
Deyu Xu, Junming Zhao, Linhua Liu; Electrically tuning near-field heat flux using metal–oxide–semiconductor structure considering gradient dielectric function distribution. Appl. Phys. Lett. 31 October 2022; 121 (18): 181112. https://doi.org/10.1063/5.0123623
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