Kulkarni, S and Nagabhushana, BM and Suriya murthy, N and Shivakumara, C and Chakradhar, RPS and Damle, R (2012) Synthesis, luminescence and EPR studies on CaSiO 3: Pb, Mn-nano phosphors synthesized by the solution combustion method. In: Ceramics International .
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Nano-ceramic phosphor CaSiO 3 doped with Pb and Mn was synthesized by the low temperature solution combustion method. The materials were characterized by Powder X-Ray Diffraction (XRD), Thermo-gravimetric and Differential Thermal Analysis (TG-DTA), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). The Electron Paramagnetic Resonance (EPR) spectrum of the investigated sample exhibits a broad resonance signal centered at g=1.994. The number of spins participating in resonance (N) and its paramagnetic susceptibility (Ï�) have been evaluated. Photoluminescence of doped CaSiO 3 was investigated when excited by UV radiation of 256 nm. The phosphor exhibits an emission peak at 353 nm in the UV range due to Pb 2+. Further, a broad emission peak in the visible range 550-625 nm can be attributed to 4T 1â�� 6A 1 transition of Mn 2+ ions. The investigation reveals that doping perovskite nano-ceramics with transition metal ions leads to excellent phosphor materials for potential applications. Â© 2012 Elsevier Ltd and Techna Group S.r.l.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to Elsevier|
|Keywords:||Nano-ceramics;Phosphors;Luminescence studies;EPR measurements|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||17 Sep 2012 10:41|
|Last Modified:||17 Sep 2012 10:41|
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