Facile synthesis, vibrational, optical and improved luminescence properties analysis of Ca₂KZn₂V₃O₁₂ phosphor

Crystal structure, infrared spectroscopy and thermodynamic properties of a manganese member of the ellenbergerite family

“…27–30 The bands at 949, 815, and 777 cm −1 could refer to V–O and V–OH antisymmetric stretching vibrations of VO 4 , HVO 4 0438 H 2 VO 4 tetrahedra (ν 3 ). 27–29,31,32 The intensive band at 721 cm −1 and the shoulder at 652 cm −1 , which are adjacent to the bands of stretching vibrations of VO 4 , HVO 4 0438 H 2 VO 4 tetrahedra, can be assigned to Mn–O. 33…”

“…The band at 860 with the shoulder at 882 cm À1 can be assigned to n 1 stretching vibrations of VO 4 , HVO 4 0438 H 2 VO 4 tetrahedra. [27][28][29][30] The bands at 949, 815, and 777 cm À1 could refer to V-O and V-OH antisymmetric stretching vibrations of VO 4 , HVO 4 0438 H 2 VO 4 tetrahedra (n 3 ). [27][28][29]31,32 The intensive band at 721 cm À1 and the shoulder at 652 cm À1 , which are adjacent to the bands of stretching vibrations of VO 4 , HVO 4 0438 H 2 VO 4 tetrahedra, can be assigned to Mn-O.…”

“…[27][28][29][30] The bands at 949, 815, and 777 cm À1 could refer to V-O and V-OH antisymmetric stretching vibrations of VO 4 , HVO 4 0438 H 2 VO 4 tetrahedra (n 3 ). [27][28][29]31,32 The intensive band at 721 cm À1 and the shoulder at 652 cm À1 , which are adjacent to the bands of stretching vibrations of VO 4 , HVO 4 0438 H 2 VO 4 tetrahedra, can be assigned to Mn-O. 33 The band of asymmetrical stretching vibrations of the V-O-V bond might appear at the region 815-720 cm À1 (732 cm À1 for the linear V-O-V bond), 30,31,34 but it is overlapped by other more intensive bands.…”

Structures, photoluminescence, and principles of self-activated phosphors

“…The broad emission band from 400 to 650 nm can be attributed to the charge transfer transition in the VO 4 tetrahedra. Jeyakumaran 65 synthesized and studied the properties of Ca 2 KZn 2 V 3 O 12 (CKZVO), which possesses a cubic structure. This phosphor exhibited intense absorption spectra in the UV region owing to the charge transfer in the (VO 4 ) 3− tetrahedral group.…”