Thermoelectric Enhancements in PbTe Alloys Due to Dislocation-Induced Strains and Converged Bands.
PbTe
band convergence
dislocations
lattice strain
thermoelectronics
Journal
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
ISSN: 2198-3844
Titre abrégé: Adv Sci (Weinh)
Pays: Germany
ID NLM: 101664569
Informations de publication
Date de publication:
Jun 2020
Jun 2020
Historique:
received:
24
09
2019
revised:
07
01
2020
entrez:
30
6
2020
pubmed:
1
7
2020
medline:
1
7
2020
Statut:
epublish
Résumé
In-grain dislocation-induced lattice strain fluctuations are recently revealed as an effective avenue for minimizing the lattice thermal conductivity. This effect could be integratable with electronic enhancements such as by band convergence, for a great advancement in thermoelectric performance. This motivates the current work to focus on the thermoelectric enhancements of p-type PbTe alloys, where monotelluride-alloying and Na-doping are used for a simultaneous manipulation on both dislocation and band structures. As confirmed by synchrotron X-ray diffractions and Raman measurements, the resultant dense in-grain dislocations induce lattice strain fluctuations for broadening the phonon dispersion, leading to an exceptionally low lattice thermal conductivity of ≈0. 4 W m-K
Identifiants
pubmed: 32596105
doi: 10.1002/advs.201902628
pii: ADVS1679
pmc: PMC7312309
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1902628Informations de copyright
© 2020 The Authors. Published by WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim.
Déclaration de conflit d'intérêts
The authors declare no conflict of interest.
Références
Adv Mater. 2017 Jun;29(23):
pubmed: 28397364
Nature. 2011 May 5;473(7345):66-9
pubmed: 21544143
Adv Mater. 2012 Dec 4;24(46):6125-35
pubmed: 23074043
Nat Mater. 2015 Dec;14(12):1223-8
pubmed: 26436339
Science. 2008 Sep 12;321(5895):1457-61
pubmed: 18787160
Nano Lett. 2008 Aug;8(8):2580-4
pubmed: 18624384
Nat Commun. 2016 Jul 26;7:12167
pubmed: 27456303
Phys Rev Lett. 2012 Apr 20;108(16):166601
pubmed: 22680741
Nat Mater. 2004 Jul;3(7):458-63
pubmed: 15220913
J Am Chem Soc. 2018 Jul 25;140(29):9282-9290
pubmed: 29956926
Nat Mater. 2012 Mar 11;11(5):422-5
pubmed: 22406814
Adv Mater. 2018 Apr;30(17):e1705617
pubmed: 29399915
Adv Mater. 2019 May;31(21):e1900108
pubmed: 30968467
Science. 2015 Apr 3;348(6230):109-14
pubmed: 25838382
Adv Sci (Weinh). 2020 May 15;7(12):1902628
pubmed: 32596105
Nat Commun. 2017 Jan 06;8:13901
pubmed: 28059069
Adv Sci (Weinh). 2016 Jul 07;3(11):1600196
pubmed: 27980995
Science. 2004 Feb 6;303(5659):818-21
pubmed: 14764873
Phys Rev Lett. 2008 Jul 18;101(3):035901
pubmed: 18764265
Nat Commun. 2017 Jan 04;8:13828
pubmed: 28051063
Phys Rev B Condens Matter. 1994 Nov 15;50(20):15056-15062
pubmed: 9975854