Optical analysis of RE 3+ (RE = Eu,Tb):MgLa 2 V 2 O 9 nano-phosphors.

Autor: Hajira S; Department of Physics, Government College for Men (A), Kadapa, India., Vijitha JS; Department of Physics, Government College for Men (A), Kadapa, India., Dhoble SJ; Department of Physics, R.T.M. Nagpur University, Nagpur, India., Raju BDP; Department of Physics, S.V. University, Tirupati, India., Reddy BS; Department of Physics, Government College for Men (A), Kadapa, India.
Jazyk: angličtina
Zdroj: Luminescence : the journal of biological and chemical luminescence [Luminescence] 2024 Jan; Vol. 39 (1), pp. e4612. Date of Electronic Publication: 2023 Nov 06.
DOI: 10.1002/bio.4612
Abstrakt: Red and green rare-earth ion (RE 3+ ) (RE = Eu, Tb):MgLa 2 V 2 O 9 micro-powder phosphors were produced utilizing a standard solid-state chemical process. The X-ray diffraction examination performed on the phosphors showed that they were crystalline and had a monoclinic structure. The particles grouped together, as shown in the scanning electron microscopy (SEM) images. Powder phosphors were examined using a variety of spectroscopic techniques, including photoluminescence (PL), Fourier-transform infrared, and energy dispersive X-ray spectroscopy. Brilliant red emission at 615 nm ( 5 D 0  →  7 F 2 ) having an excitation wavelength (λ exci ) of 396 nm ( 7 F 0  →  5 L 6 ) and green emission at 545 nm ( 5 D 4  →  7 F 5 ) having an λ exci  = 316 nm ( 5 D 4  →  7 F 2 ) have both been seen in the emission spectra of Tb 3+ :MgLa 2 V 2 O 9 nano-phosphors. The emission mechanism that is raised in Eu 3+ :MgLa 2 V 2 O 9 and Tb 3+ :MgLa 2 V 2 O 9 powder phosphors has been explained in an energy level diagram.
(© 2023 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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