Work

Regular Paper : The Effects of Al-substitution on Thermoelectric and Charge Transport Properties of BiCuOSe Compounds

Year: 2015

Type: article

Abstract: The effects of Al-substitution on thermoelectric and charge transport properties of BiCuOSe compounds were investigated. The compounds were prepared by a solid-state reaction and consolidated by SPS (spark plasma sintering). In spite of the increase in the hole concentration with increasing Al amounts in BiCuOSe compound, the electrical conductivity at room temperature was kept constant due to the reduction of mobility. However, electrical conductivities of Al-substituted BiCuOSe compounds at elevated temperature (> 600 K) were higher than those of BiCuOSe, and this result was discussed in terms of it``s the band gap energy. The Seebeck coefficient was drastically reduced when Al was substituted in Bi site, which indicated that the electronic structure was influenced by the Al-substitution into Bi-site.

Source: Journal of the Korean Institute of Electrical and Electronic Material Engineers

DOI: 10.4313/jkem.2015.28.12.847

Authors: Tae Ho An, Young Soo Lim, Won Seon Seo, Cheol Hee Park, Chan Park

Institutions: Seoul National University, Pukyong National University, Korea Institute of Ceramic Engineering and Technology, LG Chem (South Korea)

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: bronze

OpenAlex ID: W2346002782