NDLI: Synthesis, Luminescence And EPR Studies On CaSiO 3: Pb, Mn-nano Phosphors Synthesized By The Solution Combustion Method

Content Provider	Indian Institute of Science (IISc)
Author	Kulkarni, S. Nagabhushana, B. M. Murthy, Suriya N. Shivakumara, C. Chakradhar, R. P. S. Damle, R.
Copyright Year	2012
Abstract	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 (èI�) 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 1ãa�� 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. ãAÃ 2012 Elsevier Ltd and Techna Group S.r.l.
File Format	PDF
Journal	PeerReviewed
Language	English
Publisher Date	2012-01-01
Access Restriction	Authorized
Subject Keyword	Solid State & Structural Chemistry Unit
Content Type	Text
Resource Type	Article

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