Anti-counterfeiting applications by photochromism induced modulation of reversible upconversion luminescence in TiO<sub>2</sub>:Yb<sup>3+</sup>,Er<sup>3+</sup> ceramic
Asif Ali Haider, Yangke Cun, Xue Bai, Zan Xu, Yingzhu Zi, Jianbei Qiu, Zhiguo Song, Anjun Huang, Zhengwen Yang
Abstract
Reversible photochromism and reversible UCL modulation of TiO 2 :Yb 3+ ,Er 3+ ceramics were reported when alternating 405 nm LED and 808 nm laser irradiation. The photochromic TiO 2 :Yb 3+ ,Er 3+ ceramics are promising materials in the field of anti-counterfeiting.
Topics & Concepts
PhotochromismMaterials scienceCeramicIrradiationPhoton upconversionPhotochemistryLaserLuminescenceOptoelectronicsModulation (music)OpticsNanotechnologyComposite materialChemistryPhysicsNuclear physicsAcousticsPhotochromic and Fluorescence ChemistryLuminescence and Fluorescent MaterialsAdvanced Photocatalysis Techniques