Detection of terahertz radiation by resonant tunneling nanoheterostructures

Detection of terahertz radiation by resonant tunneling nanoheterostructures The phenomenon of terahertz radiation detection by resonant tunneling structures (RTSs) has been studied. The calculations of the changes ΔI 0 in the direct current (DC) component I 0 under the action of an alternating electric field were carried out by the solution of a nonstationary Schrodinger equation with a time-periodic electric field based on the Floquet mode expansion of the wave functions. The dependences of the DC component I 0 in resonant tunneling structures on the frequency ν and AC signal amplitude V ac have been built. It is shown that the ΔI 0 value in triple-barrier RTSs at resonance frequency hv ≈ E r2–E r1 (E r1 and E r2 are the energies of the size-quantized levels) can exceed a low-frequency value by more than an order of magnitude. The parameters of the structures have been optmized, in order to use them in the terahertz radiation detectors in the anbsence of an external bias. The possibility of tuning the resonance frequency in the terahertz range by changing the DC bias has been shown. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Microelectronics Springer Journals

Detection of terahertz radiation by resonant tunneling nanoheterostructures

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Publisher
Springer Journals
Copyright
Copyright © 2016 by Pleiades Publishing, Ltd.
Subject
Engineering; Electrical Engineering
ISSN
1063-7397
eISSN
1608-3415
D.O.I.
10.1134/S1063739716020037
Publisher site
See Article on Publisher Site

Abstract

The phenomenon of terahertz radiation detection by resonant tunneling structures (RTSs) has been studied. The calculations of the changes ΔI 0 in the direct current (DC) component I 0 under the action of an alternating electric field were carried out by the solution of a nonstationary Schrodinger equation with a time-periodic electric field based on the Floquet mode expansion of the wave functions. The dependences of the DC component I 0 in resonant tunneling structures on the frequency ν and AC signal amplitude V ac have been built. It is shown that the ΔI 0 value in triple-barrier RTSs at resonance frequency hv ≈ E r2–E r1 (E r1 and E r2 are the energies of the size-quantized levels) can exceed a low-frequency value by more than an order of magnitude. The parameters of the structures have been optmized, in order to use them in the terahertz radiation detectors in the anbsence of an external bias. The possibility of tuning the resonance frequency in the terahertz range by changing the DC bias has been shown.

Journal

Russian MicroelectronicsSpringer Journals

Published: May 19, 2016

References

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