Sonochemical synthesis, thermoluminescence and Judd-ofelt analysis of Nd3+ doped Y2SiO5

Abstract

The Nd3+-activated Y2SiO5 nanopowders (NPs) were fabricated via sonochemical method. Techniques such as Powder X-ray Diffraction (PXRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Diffuse Reflectance Spectroscopy (DRS), and Thermoluminescence (TL) were employed to describe the obtained product. The values of energy band gap were found in the range 5.17–5.81 eV for NPs in X1 phase and 4.96–5.71 eV for NPs in X2 phase. We found that 4 kG y γ-ray irradiation dose for the NPs with 5 mol% Nd3+ concentration exhibits maximum TL intensity. TL response recorded for YSO:Nd3+ (1–9 mol%) calcined at 1300 °C show that 5 mol% dopant concentration exhibits maximum response when radiated with 4 kG y γ-ray radiation. Also, for a dopant concentration of 5 mol% TL response increases with the irradiation dose. The Judd-Ofelt intensity parametrs Ω2,Ω4 and Ω6 were estimated to be 0.110, 0.285, 0.050 and 0.159, 0.216, 0.154 in 10−20cm2units in X1 and X2 phases respectively. The JO parameters for our samples are Ω4 >Ω2 >Ω6.