Work

Seebeck Effects and Electronic Thermal Conductivity of IV–VI Materials

Year: 2011

Type: article

Abstract: Theoretical calculations of the Seebeck coefficient and electronic thermal conductivity of general materials such as metals, semiconductors, and quantum structures are described, and the dependence of the Seebeck coefficient on doping level and temperature is discussed for lead-salt materials. Experimental Seebeck coefficient was measured for PbS films and the value agreed well with the theoretical value, indicating a high thermoelectric performance comparable to that of PbTe. The temperature dependence of electronic thermal conductivity is also discussed for lead salts. It is shown that minority carriers in the narrow-gap semiconductor significantly affect electronic thermal conductivity, and electronic thermal conductivity at high temperatures can be reduced by high-level doping.

Source: Japanese Journal of Applied Physics

DOI: 10.7567/jjap.50.031302

Authors: Akihiro Ishida, Tomohiro Yamada, Takayuki Nakano, Yasushi Takano, Sadao Takaoka

Institutions: Shizuoka University, The University of Osaka

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funder: Japan Society for the Promotion of Science

Award: High-efficiency thermoelectric devices with Si nanostructures and their measurement techniques