Optik 127 (2016) 6243–6252 Contents lists available at ScienceDirect Optik journal homepage: www.elsevier.de/ijleo Violet blue emission and thermoluminescence glow curve analysis of Gd 2 SiO 5 :Ce 3+ phosphor Yogita Parganiha a,∗ , Jagjeet Kaur a , Vikas Dubey b,∗ , Ravi Shrivastava c , Deepika Chandrakar a a Department of Physics, Govt. Vishwanath Yadav Tamaskar Post Graduate Autonomous College, Durg (C.G.), 491001, India b Department of Physics, Bhilai Institute of Technology, Kendri, Raipur, C.G., India c ICFAI University, Kumhari, Raipur, C.G., India a r t i c l e i n f o Article history: Received 22 February 2016 Accepted 15 April 2016 Keywords: Violet-blue emission Ce doped GSO phosphor TL glow curve analysis a b s t r a c t This paper reports synthesis of Ce 3+ ions-doped Gd 2 SiO 5 phosphor powders prepared by modified solid state reaction method, which is most suitable method for large-scale pro- duction. Starting materials used for sample preparation were Gd 2 O 3 , SiO 2 and CeO 2 with variable concentration of cerium (0.1 mol% to 2.5 mol%) with fixed amount of boric acid (0.05 mol%) as flux. PL excitation spectra was found at 260 nm while the emission spec- tra was found at 365, 378, 555, 602, 607 and 627 nm for lower Ce 3+ doping concentration which are attributed to the Gd 3+ ion transitions. For higher concentration of Ce 3+ we get broad emission spectra from 350 to 550 nm which is characteristics of Ce 3+ ion transition. Commission Internationale de l’Eclairage co-ordinate (CIE) of this phosphor is x = 0.170, y = 0.029, in the violet region for 2.5 mol% of cerium. TL glow curves were recorded for dif- ferent doses of UV exposure and gamma ray dose at a heating rate of 5 ◦ C s −1 . The kinetic parameters such as activation energy “E”, the order of kinetics “b”, and the frequency factor “s” of Gd 2 SiO 5 :Ce 3+ have been calculated by using peak shape method. Sample shows gen- eral order kinetics for most of the peaks. The effect of Ce 3+ concentration on TL intensity was also studied and found that the intensity is maximum for 0.1 mol% and then decreases with increasing concentration of Ce 3+ . The present phosphor can acts as a single host for violet- blue emission (2.5 mol%) for display devices as well as may be used for thermoluminescence dosimetric material under UV & gamma dose. © 2016 Elsevier GmbH. All rights reserved. 1. Introduction In past few years, research on luminescent nanophosphors provide challenge to development of technologies in vari- ous areas such as electronics, photonics, display, lasing, detection, optical amplification, fluorescent sensing in biomedical engineering and environmental control [1–5]. Nanoscale phosphors may have a number of potential advantages over micron- sized phosphors. Rare earths (RE) are well known for their extensive use in luminescent materials. The rare earth ions doped inorganic nanophosphor is one of the most promising materials for a variety of applications in solid state lighting (SSL), solid-state lasers, lighting and displays and optical communication fields such as fluorescent lamps, cathode ray tubes, and field emission displays. Light emitting diodes (LEDs) are the ultimate light source in the solid state lighting (SSL) technol- ∗ Corresponding authors. E-mail addresses: parganiha.yogita@rediffmail.com (Y. Parganiha), jsvikasdubey@gmail.com (V. Dubey). http://dx.doi.org/10.1016/j.ijleo.2016.04.064 0030-4026/© 2016 Elsevier GmbH. All rights reserved.