Thermo, Iono and photoluminescence properties of 100 MeV Si7+ ions bombarded CaSiO3:Eu3+ nanophosphor

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.