Thermo,Iono and photoluminescence properties of 100 MeV Si7+ ions bombarded CaSiO3:Eu3+ nanophosphor |
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| Authors: | DV Sunitha H Nagabhushana Fouran Singh BM Nagabhushana SC Sharma RPS Chakradhar |
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| Institution: | 1. Prof C. N. R. Rao Centre for Nano Research (CNR), Tumkur University, Tumkur-572 103, India;2. Inter University Accelerator Center, New Delhi 110 068, India;3. Department of Chemistry, M.S. Ramaiah Institute of Technology, Bangalore 560 054, India;4. National Aerospace Laboratories (CSIR), Bangalore 560 017, India |
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| Abstract: | This paper reports on the thermo (TL), iono (IL) and photoluminescence (PL) properties of nanocrystalline CaSiO3:Eu3+ (1–5 mol %) bombarded with 100 MeV Si7+ ions for the first time. The effect of different dopant concentrations and influence of ion fluence has been discussed. The characteristic emission peaks 5D0→7FJ (J=0, 1, 2, 3, 4) of Eu3+ ions was recorded in both PL (1×1011–1×1013 ions cm?2) and IL (4.16×1012–6.77×1012 ions cm?2) spectra. It is observed that PL intensity increases with ion fluence, whereas in IL the peaks intensity increases up to fluence 5.20×1012 ions cm?2, then it decreases. A well resolved TL glow peak at ～304 °C was recorded in all the ion bombarded samples at a warming rate of 5 °C s?1. The TL intensity is found to be maximum at 5 mol% Eu3+ concentration. Further, TL intensity increases sub linearly with shifting of glow peak towards lower temperature with ion fluence. |
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