Structural and luminescence studies of titanium co‐doped SrY2O4:Eu phosphors. (8th August 2022)

• Record Type: Journal Article
• Authors: Bhatia, Smriti; Priya, Ruby; Kumar, Dinesh; Upadhyay, Sanjay; Pandey, Om Prakash
• Is Part Of: Luminescence. Volume 37:Number 9(2022)
• Page Start: 1585
• Page End: 1596
• Publication Date: 2022-08-08
• Subjects: europium -- photoluminescence -- Rietveld -- SrY2O4 -- titanium; Luminescence -- Periodicals; Bioluminescence -- Periodicals; Chemiluminescence -- Periodicals; Luminescence -- Periodicals; 535.35
• DOI: 10.1002/bio.4335
• Languages: English
• ISSNs: 1522-7235

Abstract

Abstract: Here, europium‐doped (1 to 11 mol%) and titanium (1 to 5 mol%)co‐doped SrY2 O4 :Eu phosphors were synthesized using solid‐state reaction method. The synthesized samples were characterized using X‐ray diffraction (XRD), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), and photoluminescence (PL) techniques for structural, morphological, functional group, and photoluminescence studies, respectively. XRD patterns confirmed the formation of pure phase SrY2 O4 at 1300°C and structural parameters were further determined using Rietveld refinement. FESEM micrographs revealed that doped and co‐doped samples had different morphological features. All the samples were excited at ultraviolet light excitation and emission spectra consisted of peaks corresponding to the Eu ions. The maximum PL intensity was observed for 9 mol% of Eu ions and 3 mol% co‐doping of Ti ions. The synthesized phosphors have potential applications in optoelectronics and display devices. Abstract : SrY2 O4 is an interoxide of Y2 O3 and SrO in pseudobinary phase diagrams. The structure is composed of a Y2 O4 2− framework with Sr 2+ ions residing inside the framework. In this structure, the tetrahedral sites are occupied by half of the Y 3+ ions and octahedral sites are occupied by the remaining half of the Y 3+ ions and Sr 2+ ions. Upon doping with Eu 3+ ions, it emits peaks corresponding to the 5 D0 → 7 FJ(J = 0, 1, 2, 3, 4) transitions of Eu 3+ ions.