Synthesis and Characterization of Znal2o4 Phosphor and its Luminescence Studies

Abstract

In the present paper we have reported Synthesis and Characterizations of Zinc Aluminate (ZnAl₂O₄) phosphors Doped with Dysprosium (Dy3+) for its Luminescence Properties. Using urea as fuel, ZnAl₂O₄ doped with Dysprosium (Dy3+) phosphors were made ready through a combustion method. Illuminating behaviour of the nanaophosphor was scrutinised under ultraviolet (UV) rays. unblended ZnAl₂O₄ appearance was established by urea-nitrate infusion by combustion synthesis manner at 550 ?C. The structural properties of Pure and Dy3+-doped ZnAl₂O₄ nanocrystallites were scrutinised by X-ray diffraction (XRD ) with Cu K? [40kV,15mA X-ray] at ? = 1.541862?A and Fourier Transform Infrared (FT-IR) Spectroscopy(PEService) , Transmission electron Microscopy (TEM). The crystal size was computed by Scherer’s equation. This phosphor exhibits strong green emission at ?exci = 233 nm and 359nm. The green emissions are ascribed to 5D4-7FJ (where J =3,4,5 & 6) transformation of Dy3+ electrolytes respectively. These nanaocrystallites have proclaimed powerful, extended green ejection from 5D4-7F5 at 556 nm. The Thermoluminescence (TL) studies for the said samples were allotet and the TL spectra was obtained from Thermo WinREMS-TLD Reader wrw. The utmost peak of TL intensity were appeared at approximate channel numbers 60 and 150for ZnAl₂O₄ (Pure) and ZnAl₂O₄: xDy phosphors (x = 0.003mol). The outcome have designated that ZnAl₂O₄: Dy can be a possible contender as a green-ejecting pounce and Personnel Monitoring Devices or Radiation Worker..