Luminescence and EPR studies of UVB emitting YPO4 doped with Gd3+ ions

A series of Gd-doped YPO4 with Y1-xPO4:xGd (0.005 ≤ x ≤ 0.10) compositions has been prepared via co-precipitation method. X-ray diffraction (XRD) analysis indicates the formation of a tetragonal structure for all samples. The material shows a dominant emission band at 312 nm when excited by 272 nm l...

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Bibliographic Details
Published in:Optik (Stuttgart) 2021-01, Vol.225, p.165804, Article 165804
Main Authors: Singh, Vijay, Prasad, Aman, Rao, A.S., Jung, Soon Won, Singh, N., Irfan, Muhammad
Format: Article
Language:English
Subjects:
Co-precipitation
EPR
Gd3+ions
Luminescence
UVB
YPO4
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Summary:A series of Gd-doped YPO4 with Y1-xPO4:xGd (0.005 ≤ x ≤ 0.10) compositions has been prepared via co-precipitation method. X-ray diffraction (XRD) analysis indicates the formation of a tetragonal structure for all samples. The material shows a dominant emission band at 312 nm when excited by 272 nm light. The photoluminescence (PL) intensity increases up to x = 0.10, indicating the absence of concentration quenching. The g-values observed via electron paramagnetic resonance (EPR) are a part of the characteristic U spectrum of gadolinium ions. Furthermore, the spectra show sharp bands at low Gd3+ concentrations that merge into a broader peak at higher of Gd3+ concentrations.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2020.165804