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Journal article

The Influence of Spark Plasma Sintering Temperature on the Microstructure and Thermoelectric Properties of Al,Ga Dual-Doped ZnO

By Han, Li1,2; Le, Thanh Hung1,2; Van Nong, Ngo1,2; Pryds, Nini1,2; Linderoth, Søren1,3

From

Department of Energy Conversion and Storage, Technical University of Denmark1

Electrofunctional materials, Department of Energy Conversion and Storage, Technical University of Denmark2

Management, Department of Energy Conversion and Storage, Technical University of Denmark3

ZnO dual-doped with Al and Ga was prepared by spark plasma sintering using different sintering temperatures. The microstructural evolution and thermoelectric properties of the samples were investigated in detail. The samples obtained with sintering temperature above 1223 K had higher relative densities and higher electronic conductivity than the sample sintered at 1073 K.

These results were supported by the solid-state reaction completion rate, which suggested that sintering temperature above 1223 K would be preferable for complete solid-state reaction of the samples. The sintering mechanism of ZnO particles and microstructure evolution at different sintering temperatures were investigated by simulation of the self-Joule-heating effect of the individual particles.

Language: English
Publisher: Springer US
Year: 2013
Pages: 1573-1581
ISSN: 1543186x and 03615235
Types: Journal article
DOI: 10.1007/s11664-012-2325-x
ORCIDs: Han, Li , Le, Thanh Hung , Van Nong, Ngo , Pryds, Nini and Linderoth, Søren
Keywords

Al,Ga-codoped ZnO Sintering temperature Spark plasma sintering Thermoelectric oxide

Other keywords

Characterization and Evaluation of Materials Chemistry and Materials Science Electronics and Microelectronics, Instrumentation Material Science Optical and Electronic Materials Solid State Physics sintering temperature spark plasma sintering

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