Optical analysis of RE3+ (re = Sm, Dy): MgLa2V2O9 phosphors

• Published in: Ferroelectrics. Letters section Vol. 51; no. 1-3; pp. 45 - 61
• Main Authors: Hajira, S., Santhosh Vijitha, J., Hari, Sudhakara Rao, Basha, K. A. Jamal, Adinarayana, V., Reddy, B. Sudhakar
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 03.05.2024; Taylor & Francis Ltd
• Subjects: Chromaticity; Color; emission; Emission analysis; Emission spectra; Emissions; Excitation; Fourier transforms; Functional groups; Infrared spectroscopy; Optical analysis; Phosphors; photoluminescence and FT-IR analysis; Vanadate phosphors
• ISSN: 0731-5171; 1563-5228
• DOI: 10.1080/07315171.2023.2300597

In this work, we have prepared the RE 3+ (Sm, Dy): MgLa 2 V 2 O 9 phosphors of different mol% by solid-state reaction approach. The obtained powder phosphors of RE 3+ (Sm, Dy): MgLa 2 V 2 O 9 were analyzed by SEM, XRD, FTIR, EDAX, PL spectroscopy, and CIE chromaticity diagram of the color of different mol%. The XRD pattern of the powder phosphors exhibits the phosphor's crystalline nature. The obtained size of prepared phosphors is around the size of 500 nm was observed by analysis of SEM. The element's existence in the phosphors was obtained by analysis of EDAX. Functional groups were identified by FTIR analysis. From the PL analysis Sm 3+ : MgLa 2 V 2 O 9 phosphors show intense orange-red emission at 599 nm, that is attributed to the 4 G 5/2 → 6 H 7/2 transition having an excitation λ exci =404nm ( 6 H 5/2 → 4 F 7/2 ). It exhibits yellow emission for Dy 3+ : MgLa 2 V 2 O 9 at 574 nm having a transition of 4 F 9/2 → 6 H 13/2 having an excitation wavelength λ exci. = ( 6 H 15/2 → 4 I 15/2 ). The CIE diagram shows the orange and yellow emission for Sm 3+ : MgLa 2 V 2 O 9 and Dy 3+ :MgLa 2 V 2 O 9 correspondingly. The CIE coordinates shows that the great purity of color of the phosphors powder.