Work

Thermoelectric properties and chlorine doping effect of In 4 Pb 0.01 Sn 0.03 Se 2.9 Cl x polycrystalline compounds

Year: 2014

Type: article

Abstract: We investigated the thermoelectric properties of Cl-doped polycrystalline compounds In4Pb0.01Sn0.03Se2.9Clx (x = 0.02, 0.04, and 0.06). X-ray diffraction measurement shows a gradual change in lattice volume for x ≤ 0.04 without any impurity phases indicating a systemic change in Cl doping. The Cl doping in the compounds has the effect of increasing carrier concentration and the effective mass of carriers, resulting in an increase in power factor at a high temperature (∼700 K). Because of the increased electrical conductivity at a high temperature, the dimensionless thermoelectric figure of merit ZT reaches 1.25 at 723 K for the x = 0.04 Cl-doped compound, which is a relatively high value for n-type polycrystalline materials.

Source: Dalton Transactions

DOI: 10.1039/c4dt03432e

Authors: Jin Hee Kim, Min Jae Kim, Suekyung Oh, Jong-Soo Rhyee, Su-Dong Park, Docheon Ahn

Institutions: Kyung Hee University, Korea Electrotechnology Research Institute, Pohang Accelerator Laboratory

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid