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Electrical domains and sub-millimeter signal generation in AlGaN/GaN superlattices

Published online by Cambridge University Press:  01 February 2011

Irina Gordion ,
Alexander Manasson  and
Vladimir Litvinov
Irina Gordion
Affiliation:
irina.gordion@waveband.com, WaveBand Corp, United States
Alexander Manasson
Affiliation:
amanasson@yahoo.com, University of Michigan, Ann Arbor, Physics Department, United States
Vladimir Litvinov
Affiliation:
vlitvinov@earthlink.net, WaveBand Corp, United States
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Abstract

The paper discusses the feasibility of a terahertz-signal source made of AlGaN/GaN superlattice. Negative differential conductivity, electrical domain formation, current oscillations, and power efficiency of a perspective source are described. We relate the superlattice geometry and conduction band profile, distorted by polarization fields, to the oscillation frequency and power efficiency of the device. We also determine the optimal Al content, superlattice period, and the parameters of external circuit that favor sub-millimeter wave generation.

Keywords

devicesIII-Vnitride
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 892 , 2005 , 0892-FF13-07
Copyright
Copyright © Materials Research Society 2006

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References

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