Comparing and investigating on the effect of cerium oxide and cerium sulfate on the optical behavior of Yag glass and ceramic glass

Subject Areas :

aida faeghinia ^{1 *}

1 - merc

Received: 2023-07-09 Accepted : 2023-11-14 Published : 2025-01-01

Keywords: YAG, glass-ceramic, Luminescence, glass, cerium,

Abstract :

In this study, for preparation of theYAG silicate glass and glass-ceramic by melting method the cerium sulfate and cerium oxide salts were used separately.According to Luminescence results of both glasses there were emissions spectrums in the range of 460 and 420 nm wavelength related to cerium ions. It was shown that by heating treatment, garnet crystal (in sulfated sample) formed less than the sample with cerium oxide. The emission of both glass-ceramics caused by excitation at 240 nm in the range of 460 nm wavelength. Also, the 534 and 660 nm wavelengths emissions were obtained by 340 nm wavelength excitation. Heat treatments were done by oxidic atmosphere in tubular furnace (single step) and powder SPS sintered powder and in hydrogen atmosphere in two steps. According to XRD results the 24 hrs. heat treating time and the 1060˚C temperature has an effect on the entry of cerium into the garnet structure. Finally by comparing the spectroscopy results the optical response of the garnet glass-ceramic synthesized in the hydrogen atmosphere is obtained at a wavelength of 400 nm. It is claimed that this garnet can be applied in LED industr.

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