Abstract
AbstractWhite light emitting voluminous powder of Sr(1‐x)Y2O4:Dyx3+ nanophosphors (NPPs) is synthesized through solution combustion method using organic fuel as glycine. The doping agent Dy3+ ion is incorporated in the form of dysprosium nitrate hexahydrate and Dy3+ ion varied as 0.01%, 0.03%, 0.05%, 0.07%, 0.09%, and 0.11%. Further, the sample is calcinated at a temperature of 1300 °C for 3 h. The structural and optical properties are investigated using X‐ray powder diffraction (XRD), field emission scanning electron microscopy (FE‐SEM), high‐resolution transmission electron microscopy (HR‐TEM), photoluminescence (PL), Fourier transform infrared (FTIR), and Raman spectroscopic techniques. XRD spectra confirm the orthorhombic structure of SrY2O4: Dyx3+ with Pnam space group and cell parameters of a = 10.07 Å, b = 11.91 Å, c = 3.41 Å, the particle size is about 40 nm estimated from the Debye–Scherer method. The morphology and particles size is further confirmed by FE‐SEM and HR‐TEM. The PL emission spectra obtained at an 354 nm excitation wavelength and corresponding PL emission spectra indicate two distinctive peaks, that is, blue (4F9/2 → 6H15/2) and yellow (4F9/2→ 6H13/2). FTIR and room temperature Raman spectroscopy confirms the presence of various bonds. PL emission, correspondingly, is confirmed by the CIE diagram. All these analysis reveal Sr(1‐x)Y2O4:Dyx3+ NPP may be potential candidates for white light‐emitting diodes.
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