Work

Effect of microstructure on lattice thermal conductivity of thermoelectric chalcopyrite CuFeS2: experimental and computational studies

Year: 2021

Type: article

Abstract: Chalcopyrite CuFeS2 can be considered a promising thermoelectric material when its lattice thermal conductivity κ lat is successfully reduced. We attempted to obtain fine microstructures of Zn-doped CuFeS2 to reduce κ lat while keeping its high power factor. A submicron scale grain size was achieved, and κ lat was reduced by 47%, though the electrical resistivity was significantly increased. According to phonon calculations, we propose that a thin film form is a promising candidate to achieve further attenuation of κ lat of CuFeS2 without sacrificing electrical properties via precise control of thickness.

Source: Applied Physics Express

DOI: 10.35848/1882-0786/ac1231

Authors: Naoki Sato, Pei Se Gan, Naohito Tsujii, Takao Mori

Institutions: National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, University of Tsukuba

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $1,500