2023
DOI: 10.1021/acsanm.3c04699
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Orange–Red Emitting Sr9Al6O18:Pr3+ Nanophosphors for Advanced Latent Fingerprints and Security Ink

B. N. Swathi,
B. R. Radha Krushna,
Krishtappa Manjunatha
et al.

Abstract: This study presents the synthesis of orange–red emitting Sr9Al6O18:Pr3+ nanophosphors (SAO:Pr3+ NPs) through the solution combustion process. Photoluminescence (PL) spectra revealed concentration quenching at 5 mol % with a critical distance of R C = 21.5 Å, indicating that electric multipolar interactions are responsible for the nonradiative energy transfer in the SAO lattice. Dexter’s theory confirmed the quadruple–quadruple interaction as the mechanism behind the quenching. The optimized SAO:5Pr3+ NPs exhib… Show more

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Cited by 21 publications
(1 citation statement)
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“…Optical anticounterfeiting technologies, including inks that offer simple yet effective authentication, are critical in this battle, though current fluorescent materials used have limitations regarding cost, toxicity, and stability . There’s a growing demand for affordable, environmentally friendly, and durable fluorescent materials for broad-ranging applications, from anticounterfeiting to bioimaging. …”
Section: Introductionmentioning
confidence: 99%
“…Optical anticounterfeiting technologies, including inks that offer simple yet effective authentication, are critical in this battle, though current fluorescent materials used have limitations regarding cost, toxicity, and stability . There’s a growing demand for affordable, environmentally friendly, and durable fluorescent materials for broad-ranging applications, from anticounterfeiting to bioimaging. …”
Section: Introductionmentioning
confidence: 99%