Bi3+-induced dual-color luminescence in Eu3+ substituted Y2WO6 magnetic nanophosphors for anti-counterfeiting applications

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-03-04 DOI:10.1016/j.mseb.2025.118191

Udayan Gupt , H.B Premkumar , John Peter J. Nunez , Naveen Negi , Bhagwati Prasad , Ravi L. Hadimani , Vijaylakshmi Dayal , T.Niranjana Prabhu

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引用次数: 0

Abstract

The demand for advanced materials in anti-counterfeiting drives research into nanophosphors. Building on prior work [1] that identified strong reddish-orange luminescence in (Y_1-x)₂WO₆:xEu³⁺ nanophosphors for xEu³⁺=0.07, this study explores the structural, optical and magnetic properties (Y_1-x-y)₂WO₆:xEu³⁺:yBi³⁺ (xEu³⁺ = 0.07; yBi³⁺ = 0.01, 0.03, 0.05) nanophosphors synthesized via the solution combustion technique. The nanophosphors exhibit a monoclinic structure with wire-like morphology. Raman and FTIR spectroscopy reveal bonding details, while UV–vis spectra indicate strong UV absorbance with Bi³⁺ incorporation. Photoluminescence analysis identifies the xEu³⁺ = 0.07:yBi³⁺ = 0.03 composition as optimal for stable dual luminescence, exhibiting reddish-orange and bright pink emission under 345 nm and 365 nm excitation, respectively. Additionally, the phosphors display soft magnetic properties. Physical and chemical stability tests further confirm the composition potential as dual fluorescent magnetic pigment for anti-counterfeiting applications, offering a visually distinctive and robust security feature. The combined optical and magnetic characteristics position the (Y_1-x-y)₂WO₆:0.07Eu³⁺:0.03Bi³⁺ nanophosphor as a promising pigment for security inks in anticounterfeit applications.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.