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http://dx.doi.org/10.5369/JSST.2018.27.4.249

Optical Properties of Middle Infrared Transparent ZnS Ceramics at Various Sintering Temperatures  

Yeo, Seo-Yeong (Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology)
Kwon, Tae-Hyeong (Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology)
Kim, Chang-Il (Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology)
Paik, Jong-Hoo (Electronic Convergence Materials Division, Korea Institute of Ceramic Engineering & Technology)
Publication Information
Journal of Sensor Science and Technology / v.27, no.4, 2018 , pp. 249-253 More about this Journal
Abstract
Infrared transparent ZnS ceramics were synthesized through hydrothermal synthesis ($180^{\circ}C$, 70 h) and sintered using a hot press process at $750^{\circ}C-1000^{\circ}C$. We carried out x-ray diffraction, scanning electron microscopy, and Fourier transform-infrared spectroscopy to confirm the optical properties of the ZnS ceramics after sintering at various temperatures. The phase of ZnS nanopowders was a single phase (cubic) without the hexagonal phase. However, as sintering temperature increased, the formation and increment of hexagonal structures was confirmed. The ZnS ceramic sintered at a temperature of $750^{\circ}C$ showed poor transmittance because it was not completely sintered and because of the pore effect. The ZnS ceramic with the highest transmittance (approximately 69%) was sintered at $800^{\circ}C$. As sintering temperature increased, transmittance gradually decreased owing to the increase in the formation of the hexagonal phase.
Keywords
ZnS nanoparticles; Hydrothermal synthesis; Hotpress sintering; Optical properties;
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Times Cited By KSCI : 1  (Citation Analysis)
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