Work

Semiconducting chalcogenide Ge-Se-Sb-Cu as new prospective thermoelectric materials

Year: 2019

Type: article

Abstract: This work examines the electrical and thermoelectric characteristics of Ge25Se65Sb10-xCux (0 ≤ x ≤ 10 at.%) thin films within the temperature range of 300–450 K. In order to get thin films from the bulk specimens, thermal evaporation technique was employed. The electrical conductivity increases from 2.89 × 10−9 Ω−1 m−1 to 6.39 × 10−7 Ω−1 m−1 as the Cu content increases from 0 to 10 at.%. During this investigation, A p-type Ge25Se65Sb10-xCux films were considered, to keep the thermoelectric power positive throughout the temperature range. In addition to that, the dc electrical conductivity and thermoelectric power readings were taken into account to ascertain the level of free carriers presence. As the Cu content increases, the activation energy falls even though power factor; an important thermoelectric parameter, rises. The outcome of the chalcogenide glassy composition investigation revealed that it is a likely source for acquiring high action thermoelectric materials.

Source: Results in Physics

DOI: 10.1016/j.rinp.2019.102492

Author: H.H. Hegazy

Institutions: Al-Azhar University, King Khalid University

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