International Journal of Advances in Science Engineering and Technology, ISSN: 2321-9009 Special Issue-1, June-2015 LUMINESCENCE STUDIES OF RARE EARTH (EUROPIUM) DOPED NANO-CRYSTALLINE STRONTIUM ALUMINATE MATERIALS 2+ (SRA2O4:EU ) BELEKAR R. M.*, SAWADH P. S.#, MAHADULE R. K.$, THENG P. A.$ *Arvindbabu Deshmukh Mahavidyalaya, Bharsingi, Distt.-Nagpur, Maharashtra State, India-441305 #Bapurao Deshmukh college of Engineering, Sevagram, Distt.- Wardha, Maharashtra State, India-442 102 $Tulsiramji Gaikwad - Patil College of Engineering & Technology, Nagpur, Maharashtra State, India-441108 *Corresponding Author e-mail:
[email protected] Abstract: In the present work we have prepared ultraviolet to near infrared wavelength, excellent nano-crystalline rare earth doped strontium aluminate mechanical properties, and good chemical stability. as Sr1-xEuxAl2O4, (with x = 0.01, 0.02 & 0.03) via sol Similarly, among the variety of RE ions commonly gel auto combustion technique. The homogeneity, used to dope different kinds of materials, europium structure as well as UV-excitation and persistent ions (Eu3+) have attracted significant attention luminescence of the materials was investigated by X- because they have tremendous potential for ray powder diffraction, SEM microscopy as well as applications as phosphors, electroluminescent by steady state luminescence spectroscopy and devices, optical amplifiers or lasers, and high density persistent luminescence decay curves, respectively. optical storage. The morphology of the materials at high temperatures 2. Materials: indicated important aggregation due to sintering. The The Eu2+ doped strontium aluminate were prepared luminescence decay of the quite narrow Eu2+ band at by solution combustion synthesis (SCS) using urea as ca. 525 nm shows the presence of persistent fuel with different concentration of dopent (0.01 %, luminescence after UV irradiation.