Work

New n-Type Thermoelectric Oxide, Cd3TeO6

Year: 2002

Type: article

Abstract: Electron doping into Cd 3 TeO 6 with a 1:1 ordered perovskite-type structure was carried out by two methods: the introduction of oxygen vacancies, and the atomic substitution of In for Cd. Both methods turned polycrystalline samples into metallic conductors while single crystals with metallic conductivity were obtained by the second method. The resistivity and thermoelectric power of the single-crystal indium-substituted sample were 0.6 mΩ·cm and -50 µV·K -1 , respectively, giving a power factor of 4 × 10 -4 W·K -2 ·m -1 , which is the highest among nontransition metal oxides.

Source: Japanese Journal of Applied Physics

DOI: 10.1143/jjap.41.l780

Authors: Yue Jin Shan, Katsuhiko Sasaki, Kazuhiro Sudo, Hideo Imoto, Mitsuru Itoh

Institutions: Utsunomiya University, Tokyo Institute of Technology, Materials & Structures Laboratory

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: The research on ordered perovskite-type oxide Cd_3TeO_6 with the aim of making new thermoelectric materials