LUMINESCENCE AND STRUCTURAL PROPERTIES ON Sm3+ DOPED KBr SINGLE CRYSTALS
| Author(s) | : | S.Bangaru, D.Roobanguru |
| Institution | : | Associate Professor of Physics, Arignar Anna Govt. Arts College, Namakkal |
| Published In | : | Vol. 5, Issue 1 — January 2018 |
| Page No. | : | 130-135 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
Single crystals of Sm3+ doped KBr were grown by vertical Bridgemann Stockbarger technique. The growncrystal were subjected to the characterization such as Optical absorption, Photoluminescence (PL), Thermoluminescence(TL), and TL emission, studies. The Optical absorption, TL studies on KBr: Sm3+ crystals irradiated with γ-rays isreported. The shoulder around 348nm is due to formation of V-band and bell shaped band at 611nm are noticed becauseof F-band formation in Optical Absorption spectrum. Under the excitation of 405nm light, the emission spectra weregoverned by the characteristic reddish-orange luminescence primarily originated due to transition from the excited 4G5/2to the 6H7/2 lower level noticed at 603nm. Thermoluminescence (TL) glow peak reveals two clearly visible distinct peaksat temperature around 464K and 491K. The calculated kinetic parameters show that both peaks follow the second orderkinetics.
S.Bangaru, D.Roobanguru, “LUMINESCENCE AND STRUCTURAL PROPERTIES ON Sm3+ DOPED KBr SINGLE CRYSTALS”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 1, pp. 130-135, January 2018.
