Calculation of Thermal Conductivity of AlGaN/GaN Superlattices

Herein, the results of theoretical investigation of anisotropic thermal conductivity of AlGaN/GaN superlattices (SLs) are presented. For calculations, the Boltzmann transport equation in the relaxation time approximation is used. Results of computations are compared with experiment and theoretical r...

Full description

Saved in:
Bibliographic Details
Published in:physica status solidi (b) 2023-07, Vol.260 (7), p.n/a
Main Authors: Filatova-Zalewska, Alexandra, Litwicki, Zenon, Jeżowski, Andrzej
Format: Article
Language:English
Subjects:
AlGaN/GaN
Boltzmann transport equation
superlattices
thermal conductivity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Herein, the results of theoretical investigation of anisotropic thermal conductivity of AlGaN/GaN superlattices (SLs) are presented. For calculations, the Boltzmann transport equation in the relaxation time approximation is used. Results of computations are compared with experiment and theoretical result obtained using Callaway model. Good agreement between experimental and theoretical results is observed. Opportunity of use of the Callaway model for calculation of anisotropic thermal conductivity of SLs is discussed. Anisotropic thermal conductivity of AlGaN/GaN superlattices is calculated using Boltzmann transport equation with relaxation time approximation. Comparison of computation results with experiment and Callaway model calculations is provided. Good agreement between all results is observed. The Callaway model, despite of its approximations, can be used for preliminary analysis of thermal conductivity.
ISSN:0370-1972
1521-3951
DOI:10.1002/pssb.202200528