Crystallographic and Optical Characteristics of Ultraviolet-Stimulated Dy3+-Doped Ba2GdV3O11 Nanorods

A ultraviolet-triggered white light-emitting Ba 2 Gd 1− x V 3 O 11 : x Dy 3+ 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 Dy 3+ -doped nanophosphor exhibited characteristic peaks attributed to emissions due to 4 F 9/2 → 6 H 13/2, 15/2 transitions. The concentration quenching phenomenon was witnessed for the 3 mol% fluorescent composition in Dy 3+ -doped Ba 2 GdV 3 O 11 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 Ba 2 GdV 3 O 11 nanophosphor support its usage in ultraviolet-stimulated lighting devices. Graphical Abstract