Year: 2016
Type: article
Abstract: Bi2Te3-based compounds are a well-known class of outstanding thermoelectric materials. β-As2Te3, another member of this family, exhibits promising thermoelectric properties around 400 K when appropriately doped. Herein, we investigate the high-temperature thermoelectric properties of the β-As2−xBixTe3 solid solution. Powder X-ray diffraction and scanning electron microscopy experiments showed that a solid solution only exists up to x = 0.035. We found that substituting Bi for As has a beneficial influence on the thermopower, which, combined with extremely low thermal conductivity values, results in a maximum ZT value of 0.7 at 423 K for x = 0.017 perpendicular to the pressing direction.
Source: APL Materials
DOI: 10.1063/1.4950947
Institutions: Centre National de la Recherche Scientifique, Institut Jean Lamour, Université de Lorraine, Institut de Recherche sur les Céramiques, Université de Limoges, Université de Montpellier, Institut Charles Gerhardt Montpellier, Université Paris-Est Créteil, Institut de Chimie et des Matériaux Paris-Est, University of Lisbon, Instituto Superior Técnico, Centro de Ciências e Tecnologias Nucleares
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,200
Funder: Agence Nationale de la Recherche
OpenAlex ID: W2419072410