Work

Thermoelectric properties of antimony selenide hexagonal nanotubes

Year: 2020

Type: article

Abstract: Antimony selenide (Sb 2 Se 3 ) is a material widely used in photodetectors and relatively new as a possible material for thermoelectric applications. Taking advantage of the new properties after nanoscale fabrication, this material shows great potential for the development of efficient low temperature thermoelectric devices. Here we study the synthesis, the crystal properties and the thermal and thermoelectric transport response of Sb 2 Se 3 hexagonal nanotubes (HNT) in the temperature range between 120 and 370 K. HNT have a moderate electrical conductivity ∼10 2 S m −1 while maintaining a reasonable Seebeck coefficient ∼430 μ V K −1 at 370 K. The electrical conductivity in Sb 2 Se 3 HNT is about 5 orders of magnitude larger and its thermal conductivity one half of what is found in bulk. Moreover, the calculated figure of merit (ZT) at room temperature is the largest value reported in antimony selenide 1D structures.

Source: Nanotechnology

DOI: 10.1088/1361-6528/abcb31

Authors: Jose A Hernandez, Luis F Fonseca, Michael T Pettes, Miguel Jose-Yacaman

Institutions: University of Puerto Rico at Río Piedras, University of Puerto Rico System, Los Alamos National Laboratory, Center for Integrated Nanotechnologies, Northern Arizona University

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green