Field emission in vacuum resonant tunneling heterostructures with high current densities

We analyse the steady-state thermal regime of a one-dimensional triode resonant tunnelling structure. The high currents generated by resonant tunnelling produce a large amount of heat that could damage the structure. Establishing the conditions under which it can operate at optimum efficiency is the...

Full description

Saved in:
Bibliographic Details
Published in:Scientific reports 2023-11, Vol.13 (1), p.19365-19365, Article 19365
Main Authors: Davidovich, Michael V., Nefedov, Igor S., Glukhova, Olga E., Slepchenkov, Michael M., Rubi, J. Miguel
Format: Article
Language:English
Subjects:
639/766/1130
639/766/25
Carbon
Conduction
Copper
Diamonds
Diodes
Electrodes
Electrons
Energy conservation
Graphene
Heat
Humanities and Social Sciences
multidisciplinary
Science
Science (multidisciplinary)
Temperature
Thermal radiation
Transistors
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We analyse the steady-state thermal regime of a one-dimensional triode resonant tunnelling structure. The high currents generated by resonant tunnelling produce a large amount of heat that could damage the structure. Establishing the conditions under which it can operate at optimum efficiency is therefore a problem of great relevance for applications. The tunnel current is found via eigenvalues of the Schrödinger equation in quantum wells. By calculating the current generated in the device and using the energy conservation law in the electrodes, the temperature reached is obtained for different types of electrodes and the importance of heat conduction and thermal radiation is analysed. In the cases discussed, conduction is dominant. When the electrode material is copper, the temperature reached is similar to that of the thermostat for a wide range of electrode lengths, whereas when the cathode material is diamond-graphite and the anode material is copper, the temperature increases significantly as a function of length. The results obtained allow the temperature to be controlled for optimum performance of the field-emitting triode structures.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-023-44900-2