Work

Enhanced thermoelectric performance of In and Se co-doped GeTe compounds

Year: 2020

Type: article

Abstract: GeTe-based alloys have been considered promising p-type thermoelectric materials at medium temperatures (300−800 K). Indium (In), an effective dopant that introduces resonant states, and selenium (Se), which reduces lattice thermal conductivity, were combined. The process resulted in the enhancement of the power factor because of the distortion of the density of state and descent of thermal conductivity after the appearance of point defects and the scattering of boundaries. Ge0.99In0.01Te0.95Te0.05 had a high zT of ∼1.38, which is higher than the zT values of In- or Se-doped systems. The high zT demonstrated that p-type In/Se co-doped GeTe compounds exerted synergistic effects on electrical and thermal transport.

Source: Journal of Materials Research and Technology

DOI: 10.1016/j.jmrt.2020.02.037

Authors: Luo Yue, Wenlin Cui, Shuqi Zheng, Yue Wu, Ximeng Dong, Guiwu Lu

Institutions: China University of Petroleum, Beijing, State Key Laboratory of Heavy Oil

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,000