Photoluminescence properties of Eu3+-activated Y1.50Sc0.50O3 phosphors

WOS:000586398900005 In this research, Eu3+ activated and Dy3+-co-doped Y2O3 based phosphors have been synthesized by solid-state reaction method under open atmosphere. The host lattice is composed of 0.25 moles of Sc2O3 which is added to phosphor composition. Thus, Sc3+ substitution of Y3+ ions is implemented to form Y1.40Sc0.50O3 host lattice. The thermal analysis (DTA/TG) have been carried out from 50 degrees C to 1400 degrees C for preliminary examination of thermal behavior of phosphors during heat treatments. After the heating process, the phase formations are characterized by X-ray diffraction resulted as Y2O3 single phase cubic structure. The effects of Eu3+ and Dy3+ dopant ions on the photoluminescence and phase formation properties of the hosts are investigated and determined as Dy3+-co-doped phoshor has the reduced excitation/emission intensities as well as decay lifetimes. The authors would like to thank Karamanoglu Mehmetbey University, Scientific Research Projects Commission (BAP, project number: 11-M-17), Republic of Turkey for financial support. The authors are grateful to Prof. Dr. Adil Denizli from Hacettepe University, Department of Chemistry and Biochromatography and Biodiagnostics Research Group for their kind helps.