Work

Thermoelectric properties of I-doped n-type Bi 2 Te 3 -based material prepared by hydrothermal and subsequent hot pressing

Year: 2017

Type: article

Abstract: I-doped Bi 2 Te 3−x I x (x=0, 0.05, 0.1, 0.2) flower-like nanoparticles were synthesized by a hydrothermal method through a careful adjustment of the amount of ethylenediamine tetraacetic acid surfactant. The nanopowders of flower-like nanoparticles were hot-pressed into bulk pellets and the thermoelectric properties of the pellets were investigated. The results showed that I-doping decreased the electrical resistivity effectively, and the thermal conductivitives of the Bi 2 Te 3−x I x bulk samples was lower because of the closer atomic mass of I compared to Te. As a result, a ZT value of 1.1 was attained at 448 K for the Bi 2 Te 2.9 I 0.1 sample.

Source: Progress in Natural Science Materials International

DOI: 10.1016/j.pnsc.2017.02.009

Authors: Fang Wu, Wei Wang, Xing Hu, Mingsheng Tang

Institutions: Zhengzhou University, Zhengzhou Institute of Technology

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: hybrid

Estimated APC paid: $2,790