Abstract
A ultraviolet-triggered white light-emitting Ba2Gd1−xV3O11:xDy3+ nanophosphor series has been developed with the aid of urea-fueled solution combustion route, for the first time. Powder x-ray diffraction and Rietveld refinement have been utilized to study the structural features of the synthesized series. Transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), and energy-dispersive spectroscopy (EDS) analysis have been employed for morphological and elemental analysis. When triggered by ultraviolet radiation at 324 nm, the Dy3+-doped nanophosphor exhibited characteristic peaks attributed to emissions due to 4F9/2 → 6H13/2, 15/2 transitions. The concentration quenching phenomenon was witnessed for the 3 mol% fluorescent composition in Dy3+-doped Ba2GdV3O11 nanophosphor. The Auzel’s model has been of great usage in determining the values for intrinsic lifetime (1.112 ms) and non-radiative rates (421.178 s−1). The efficient and cool conduct of the white light-emitting nanophosphor series has been endorsed by the CIE color coordinates (x = 0.256, y = 0.341), correlated color temperature (CCT = 9751 K), and quantum efficiency value (67%). The structural and photoluminescence behavior featured by the trivalent dysprosium-doped Ba2GdV3O11 nanophosphor support its usage in ultraviolet-stimulated lighting devices.
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Acknowledgment
One of the authors, Ms. Priya Phogat, gratefully recognizes the University Grants Commission (UGC), New Delhi, India, for granting support to the research work financially in the form of senior research fellowship (SRF, Award No. 128/ CSIR-UGC NET DEC 2017).
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Phogat, P., Taxak, V.B. & Malik, R.K. Crystallographic and Optical Characteristics of Ultraviolet-Stimulated Dy3+-Doped Ba2GdV3O11 Nanorods. J. Electron. Mater. 51, 4541–4554 (2022). https://doi.org/10.1007/s11664-022-09711-7
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DOI: https://doi.org/10.1007/s11664-022-09711-7