Tm<sup>3+</sup>; Yb<sup>3+</sup>:Zn<sub>2</sub>TiO<sub>4</sub> near infrared to blue upconversion phosphors for anti-counterfeit applications
Joydip Dutta, Mitesh Chakraborty, Vineet Kumar Rai
Abstract
The upconversion (UC) emission spectra recorded by using 980 nm laser of the prepared phosphors. The excitation wavelength shows intense blue colour. The anti-counterfeit application of the prepared sample demonstrated.
Topics & Concepts
Photon upconversionPhosphorExcitationMaterials scienceAnalytical Chemistry (journal)CounterfeitWavelengthInfraredSpectral lineLaserOptoelectronicsChemistryOpticsDopingPhysicsChromatographyPolitical scienceAstronomyQuantum mechanicsLawLuminescence Properties of Advanced MaterialsLuminescence and Fluorescent Materials