Next Article in Journal
A Novel Porcine Graft for Regeneration of Bone Defects
Next Article in Special Issue
Rapid Synthesis and Formation Mechanism of Core-Shell-Structured La-Doped SrTiO3 with a Nb-Doped Shell
Previous Article in Journal
“Low Cost” Pore Expanded SBA-15 Functionalized with Amine Groups Applied to CO2 Adsorption
Previous Article in Special Issue
Misfit Layer Compounds and Ferecrystals: Model Systems for Thermoelectric Nanocomposites
Article Menu

Export Article

Open AccessArticle
Materials 2015, 8(5), 2514-2522; doi:10.3390/ma8052514

Synthesis and Thermoelectric Properties in the 2D Ti1 xNbxS3 Trichalcogenides

Laboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN, 6 bd Maréchal Juin, Caen Cedex 4 14050, France
*
Author to whom correspondence should be addressed.
Academic Editor: Chunlei Wan
Received: 25 March 2015 / Revised: 10 April 2015 / Accepted: 22 April 2015 / Published: 11 May 2015
(This article belongs to the Special Issue Low-Dimensional Anisotropic Thermoelectrics)
View Full-Text   |   Download PDF [1077 KB, uploaded 11 May 2015]   |  

Abstract

A solid solution of Ti1 − xNbxS3 composition (x = 0, 0.05, 0.07, 0.10) was synthesized by solid-liquid-vapor reaction followed by spark plasma sintering. The obtained compounds crystallize in the monoclinic ZrSe3 structure type. For the x = 0.07 sample, a mixture of both A and B variants of the MX3 structure is evidenced by transmission electron microscopy. This result contrasts with those of pristine TiS3, prepared within the same conditions, which crystallizes as a large majority of A variant. Thermoelectric properties were investigated in the temperature range 323 to 523 K. A decrease in the electrical resistivity and absolute value of the Seebeck coefficient is observed when increasing x due to electron doping. The lattice component of the thermal conductivity is effectively reduced by the Nb for Ti substitution through a mass fluctuation effect and/or a disorder effect created by the mixture of both A and B variants. Due to the low carrier concentration and the semiconductor character of the doped compounds, the too low power factor values leads to ZT values that remain smaller by a factor of 50 than those of the TiS2 layered compound. View Full-Text
Keywords: sulfur; transition metal sulfides; niobium; titanium trisulfide; thermoelectric; electrical properties; thermal conductivity; Seebeck coefficient sulfur; transition metal sulfides; niobium; titanium trisulfide; thermoelectric; electrical properties; thermal conductivity; Seebeck coefficient
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Misse, P.R.N.; Berthebaud, D.; Lebedev, O.I.; Maignan, A.; Guilmeau, E. Synthesis and Thermoelectric Properties in the 2D Ti1 xNbxS3 Trichalcogenides. Materials 2015, 8, 2514-2522.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top