Eu3+-doped transparent potassium lanthanum silicate (KLaSiO4) glass-ceramic nanocomposites: Synthesis,properties and application |
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Authors: | Rishideo Kumar Atiar Rahaman Molla Anirban Chakrabarti Anal Tarafder |
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Affiliation: | 1. CSIR-Central Glass and Ceramic Research Institute, Glass Division, 196 Raja S. C. Mullick Road, Kolkata, West Bengal, 700 032, India;2. Department of Nanotechnology, Central University of Jharkhand, Ranchi, Jharkhand, 835 205, India |
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Abstract: | The preparation of Eu3+-doped novel K2O-La2O3-Al2O3-SiO2 (KLAS)-based glass and transparent KLS (KLaSiO4) glass–ceramic (GC) nanocomposites is reported. Nanostructures of the transparent GCs were analyzed by FE-SEM, H(R)-TEM and SAED techniques. The average size of the crystallites is calculated using XRD data and found to be in the range 13–19?nm which is matched well with the average particle size observed from TEM images in the range 5–18?nm. Photoluminescence spectra of Eu3+ ions exhibit emission transitions of 5D0?→?7Fj (j?=?0 and 1–4) under the excitation at 394?nm. The emission spectra reveals up to 3-fold enhancement of luminescence performance of the KLS GC nanocomposites compared to as-prepared glass. This enhancement is caused due to entering of Eu3+ ions into the KLS crystal sites by replacing the La3+ ions. Such luminescence properties of KLS glass-ceramic nanocomposites could be a promising candidate as laser host for many laser devices. |
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Keywords: | Potassium lanthanum silicate Transparent glass-ceramics TEM Fluorescence |
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