Thermoelectric properties and stability of Tl-doped SnS

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F19%3A39915146" target="_blank" >RIV/00216275:25310/19:39915146 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/19:00509416 RIV/00216224:14740/19:00113448 RIV/00216208:11320/19:10398920

Result on the web

<a href="http://DOI" target="_blank" >http://DOI</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2019.151902" target="_blank" >10.1016/j.jallcom.2019.151902</a>

Result language

angličtina

Original language name

Thermoelectric properties and stability of Tl-doped SnS

Original language description

Tin sulfide (SnS) is an analog of tin selenide (SnSe) and is a promising thermoelectric material. However, a stable and effective doping of this compound has still not been achieved. According to our observations, this is mainly due to the very low equilibrium solubility of dopants and formation of extraneous phases, which is also an important issue for photovoltaic (PV) applications. Achieving a reasonable (60%) doping efficiency of thallium (Tl) in a cation sublattice of SnSe, we explored the same doping for SnS. Hot-pressed polycrystalline (PC) samples were prepared along with their single-crystalline (SC) counterparts. Samples were examined for extraneous phases by X-ray diffraction (XRD), and energy-dispersive spectroscopy (EDS). Thermal stability was determined by thermogravimetric analysis (TGA). Measurements of the Seebeck and Hall coefficient, and electrical and thermal conductivity were conducted over a temperature range of 80-775 K. The experiments suggested a very low solubility of Tl ( approximate to 0.1%). Slight Tl doping resulted in a substantial improvement of the thermoelectric efficiency (ZT) of SnS and enhanced crystal quality in terms of carrier mobility. We found, however, that attempts to prepare material with a high concentration of Tl or the examination of samples at temperatures above 600 K led to chemical instability. (C) 2019 Elsevier B.V. All rights reserved.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

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Volume of the periodical

811

Issue of the periodical within the volume

November

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

"151902-1"-"151902-9"

UT code for WoS article

000487657000006

EID of the result in the Scopus database

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