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Ceramic and Crystal Materials for Optics and Photonics: Poster Session
Sponsored by: ACerS Basic Science Division, ACerS Glass & Optical Materials Division
Program Organizers: Yiquan Wu, Alfred University; Jas Sanghera, Naval Research Laboratory; Akio Ikesue, World-Lab. Co., Ltd; Mark Dubinskiy, Army Research Laboratory; Xiang Hua Zhang, University of Rennes - and - Materials Science Department, University of Arizona; Michael Squillante, Radiation Monitoring Devices Inc; Long Zhang, Shanghai Institute of Optical and Fine Mechanics, Chinese Academy of Science; Takunori Taira, National Institutes of Natural Science

Tuesday 9:00 AM
November 3, 2020
Room: Poster Hall
Location: MS&T Virtual

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Self Activated Ca₃Si₂O₇ + Ca₂SiO₄:Dy³⁺ Phosphors Derived from Agro-food Wastes: Manmeet Kaur¹; Kulvir Singh¹; ¹Thapar Institute of Engineering and Technology
    A cost-effective route is presented to synthesize Dy³⁺ doped mixed phase Ca₃Si₂O₇ + Ca₂SiO₄ phosphors using agro-food wastes (rice husk ash and egg shell powder). These phosphors (Ca_3-xSi₂O₇ : xDy³⁺, x=0, 0.0025, 0.0050, 0.0075, 0.0100) have been synthesized using solid-state reaction method. X-ray diffraction confirms that Dy³⁺ doping increases the volume fraction of Ca₂SiO₄ phase in comparison to the Ca₃Si₂O₇ phase, till x=0.0050. Scanning electron microscope images indicate that liquid phase sintering is taking place in all the samples. The photoluminescence spectrum contains additional bands due to the inherently present titanium ions (as confirmed by energy dispersive x-ray spectroscopy), along with the typical emission bands of Dy³⁺. The optical band gap calculated using diffuse reflectance spectra lies in the 3.67-3.79 eV range. CIE co-ordinates lie in the white light region suggesting that these phosphors could potentially find use in solid-state lighting application.

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