Work

Zinc Oxide Ceramics with High Mobility as n-Type Thermoelectric Materials

Year: 2007

Type: article

Abstract: Thermoelectric properties of zinc oxide ceramics are largely influenced by the mobility variation because of the formation of double Schottky barrier at grain boundary. It was demonstrated that magnetic texturing enabled to fabricate highly c-axis oriented ceramics with orientation degree of 100 MRD. This high orientation of grains resulted in periodic grain boundary structures along ab -plane, which was confirmed by edge-on HRTEM images. Hall measurement revealed that the mobility was enhanced at 80% by the magnetic texturing. Furthermore, it was estimated that the effect of magnetic texturing was equivalent to the reduction in the density of trap by 5.9×1012 cm-2.

Source: Materials science forum

DOI: 10.4028/www.scientific.net/msf.561-565.581

Authors: Yoshiaki Kinemuchi, Hisashi Kaga, Satoshi Tanaka, Keizo Uematsu, Hiromi Nakano, Koji Watari

Institutions: National Institute of Advanced Industrial Science and Technology, Nagaoka University of Technology, Ryukoku University

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

OpenAlex ID: W2010826112

FWCI: 0.172

Cites: 16

Cited by: 1

Related to: 10