Characterization of green-emitting translucent zinc oxide ceramics prepared via spark plasma sintering

Mei Hong, Daniela Fredrick, David M. Devito, Jane Y. Howe, Xiaocheng Yang, Nancy C. Giles, John S. Neal, Zuhair A. Munir

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Translucent, green-emitting zinc oxide (ZnO) bodies, 19 mm in diameter and 0.72 mm in thickness, have been prepared via spark plasma sintering method. The consolidation of ZnO powders was investigated over the temperature range of 550-1050°C and the pressure range of 55-530 MPa. Samples sintered at temperatures >850°C and pressures of ∼120 MPa were translucent and had densities of ∼100%. Samples sintered at 950°C and 130 MPa showed a higher maximum transmittance than the samples sintered at higher or lower temperatures or pressures, with an excellent in-line transmission of 70% in the IR region around 2330 nm. The dense ZnO ceramics exhibited a strong green emission and a weak ultraviolet emission, and the relative intensity of the green emission increased with increasing sintering temperature.

Original languageEnglish
Pages (from-to)725-733
Number of pages9
JournalInternational Journal of Applied Ceramic Technology
Volume8
Issue number4
DOIs
StatePublished - Jul 2011

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