Optical analysis of Sr 3 Gd(PO 4 ) 3 : Pr 3+ phosphors for lighting applications

A series of Pr activated Sr Gd (PO ) :xPr (0 ≤ x ≤ 2.0 mol%) phosphors were prepared and their structural, compositional and luminescence properties were investigated. The X-ray diffraction profiles indicate that the studied phosphors crystallized into body centered cubic structure and the Pr ions h...

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Bibliographic Details
Published in:Luminescence (Chichester, England) England), 2022-08, Vol.37 (8), p.1361-1368
Main Authors: Khan, P Shahab, Jamalaiah, B C
Format: Article
Language:English
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Summary:A series of Pr activated Sr Gd (PO ) :xPr (0 ≤ x ≤ 2.0 mol%) phosphors were prepared and their structural, compositional and luminescence properties were investigated. The X-ray diffraction profiles indicate that the studied phosphors crystallized into body centered cubic structure and the Pr ions have no influence on Sr Gd(PO ) phase. The high-resolution scanning electron microscopic micrograph shows the agglomeration of particles that were inter-connected and forms irregular shape Sr Gd(PO ) structure. The excitation transitions corresponding to Pr : H → P transitions at 445, 471 and 483 nm, respectively matched well with the emission of blue-LED chip. The emission spectra show strong reddish-orange luminescence through D → H transition when excited at 445 nm blue wavelength. The synthesized phosphors were potential to develop reddish-orange lighting devices.
ISSN:1522-7235
1522-7243
DOI:10.1002/bio.4308