Work

Thermoelectric Energy Conversion and Ceramic Thermoelectrics

Year: 2011

Type: article

Abstract: Oxide thermoelectrics are relatively new materials that are workable at temperatures in the range of 400K≤T≤1200K. There are several types of thermoelectric oxide, namely, cobalt oxides (p-type semi-conductors), manganese oxides (n-type) and zinc oxides (n-type semi-conductors) for high temperature energy harvesting. The Seebeck coefficient of 3d metal oxide thermoelectrics is relatively high due to either high density of states at Fermi surfaces or spin entropy flow associated with the carrier flow. The spin entropy part dominates the Seebeck coefficient of 3d-metal oxides at temperatures above 300K. Introduction of impurity particles or quantum-well structures to enhance thermionic emission and energy filtering effects for the oxide semiconductors may lead to a significant improvement of thermoelectric performance.

Source: Materials science forum

DOI: 10.4028/www.scientific.net/msf.671.1

Authors: Tsuyoshi Kajitani, Yuzuru Miyazaki, Kei Hayashi, Kunio Yubuta, X.Y. Huang, W. Koshibae

Institutions: Tohoku University, Chinese Academy of Sciences, Shanghai Institute of Ceramics, RIKEN

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

Funders: Ministry of Economy, Trade and Industry, Agency for Natural Resources and Energy, Core Research for Evolutional Science and Technology