Effect of Doping Concentration on the Luminescence Properties of MoO3: Tb3+ Nanobelts

Title

Effect of Doping Concentration on the Luminescence Properties of MoO3: Tb3+ Nanobelts

Creator

Avani, A.V.; Babu, Chrisma Rose; Shaji, S.; Anila, E.I.

Description

The development of rare-earth-doped oxide nanomaterials has garnered significant interest due to their potential applications in display and biomedical imaging technologies. Among them, MoO3, with its favourable optical properties, emerges as a promising host material for nanophosphors. In this work, the hydrothermal method was employed to synthesise MoO3: Tb3+ nanobelts by varying the terbium concentration. Structural, optical, morphological and photoluminescence characteristics were systematically examined. FESEM and TEM revealed nanobelt morphology. XPS verified the successful incorporation of Tb3+ ions. A thorough study of the photoluminescence mechanism, including concentration quenching and lifetime measurements, was carried out, as these aspects are still not well studied for this material. Under 260 nm excitation, blue-green emission was observed with optimal photoluminescence intensity at 2 mol% Tb3+ doping. The optimised sample was annealed at 500C for 12 h, resulting in greenish-white emission. Emission colour coordinates were determined using the CIE chromaticity diagram, and a dipoledipole interaction mechanism with a critical distance of 17 was identified as the cause of quenching. The average photoluminescence lifetime of the annealed sample was ~1.1 ?s. These results demonstrate the potential of MoO3: Tb3+ nanobelts as efficient phosphor materials for next-generation display and bioimaging applications. 2025 John Wiley & Sons Ltd.

Source

Luminescence;Volume;40;Issue;11;Article No.;e70351;

Date

01-01-2025

Publisher

John Wiley and Sons Ltd

Subject

dipoledipole interaction; greenish-white; nanobelts; quenching

Coverage

Avani A.V., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, India; Babu C.R., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, India; Shaji S., Facultad De Ingenier Mecica y Eltrica (FIME), Universidad Automa de Nuevo Le (UANL), Nuevo Le, San Nicol de los Garza, Mexico; Anila E.I., Department of Physics and Electronics, CHRIST (Deemed to be University), Karnataka, Bengaluru, India

Rights

Restricted Access; Hardcopy may be available in the library

Relation

ISSN: 15227235; CODEN: LUMIF

Format

online

Language

English

Type

Article

Identifier

https://doi.org/10.1002/bio.70351

https://www.scopus.com/pages/publications/105021517857?origin=resultslist