Effect of Gd3+ substituted Cadmium silicate nanophosphor for dosimetric applications

• Published in: Journal of luminescence 2022-01, Vol.241, p.118476, Article 118476
• Main Authors: Lingappa, Alageri, Manohara, B.M.
• Format: Article
• Language: English
• Subjects: Dosimeters; Emission spectra; FTIR; Quenching
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2021.118476

The Gd3+ substituted CdSiO3 nanophosphors (1–9 mol %) have been synthesized by using solution combustion (SC) method. Phosphors have been well reported by powder X-ray diffraction (PXRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), Fourier Transform Infrared Spectroscopy (FTIR) and UV–Visible spectroscopy. PXRD patterns reveal monoclinic CdSiO3 phase which can be obtained for calcining the samples at 800 °C for 2 h and average size of the samples is (22–42) nm as calculated by Scherer's formula and W–H plots. SEM micrographs show that crystallites are of agglomerated and irregular in shape. The band gap was evaluated by Wod and Tauc method is in the range of (5.18–5.35) eV. A fine determined single Thermoluminescence (TL) glow peak at 138 °C was verified for all the UV exposed models. So prepared nanomaterial's can used in nano-radiation dosimeters. [Display omitted] •(1–9 mol %) Gd3+ substituted CdSiO3 nanophosphor by SC technique calcined at 800 °C for 2 h.•Gd3+ substituted CdSiO3 nanophosphor is an insulator due to its Energy band gap is ∼5.3 eV.•TL glow peak at 138 °C was studied for all the UV exposed samples, it can be used in nano-radiation dosimeters.