pp. 1411-1417
S&M2188 Research Paper of Special Issue https://doi.org/10.18494/SAM.2020.2742 Published: April 20, 2020 Optical and X-ray-induced Luminescence Properties of Calcium Phosphate of Transparent Ceramic Form [PDF] Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida (Received December 18, 2019; Accepted March 2, 2020) Keywords: transparent ceramic, calcium phosphate, luminescence properties, SPS
Undoped and Sb-doped calcium phosphate transparent ceramics were prepared by the spark plasma sintering (SPS) technique, and their optical and X-ray-induced luminescence properties were investigated. As optical properties, the transmittance of the undoped transparent ceramic with a thickness of 1.05 mm reached a value higher than 50% in the range of 500-2500 nm. The undoped calcium phosphate exhibited an emission peak at 450 nm due to excitons. On the other hand, the Sb-doped calcium phosphate showed a broad emission peak attributable to the 3P1-1S0 transitions of Sb3+ ions around 500 nm in both PL and scintillation spectra. The obtained scintillation decay time constants of the 0.1% Sb-doped calcium phosphate were 1.2 and 7.9 μs. Glow peaks were detected at 90, 160, and 360 °C. The TSL intensity decreased with the increase in Sb concentration.
Corresponding author: Takumi KatoThis work is licensed under a Creative Commons Attribution 4.0 International License. Cite this article Takumi Kato, Daisuke Nakauchi, Noriaki Kawaguchi, and Takayuki Yanagida, Optical and X-ray-induced Luminescence Properties of Calcium Phosphate of Transparent Ceramic Form, Sens. Mater., Vol. 32, No. 4, 2020, p. 1411-1417. |