Color-tunable upconversion luminescence and prolonged Eu<sup>3+</sup> fluorescence lifetime in fluoride KCdF<sub>3</sub>:Yb<sup>3+</sup>,Mn<sup>2+</sup>,Eu<sup>3+</sup><i>via</i> controllable and efficient energy transfer
Xinxin Han, Enhai Song, Weibin Chen, Yayun Zhou, Qinyuan Zhang
Abstract
Intense Eu<sup>3+</sup> upconversion emission is realized in KCdF<sub>3</sub>:Yb<sup>3+</sup>,Mn<sup>2+</sup>,Eu<sup>3+</sup><italic>via</italic> controllable and efficient unidirectional energy transfer from Yb<sup>3+</sup>-Mn<sup>2+</sup> dimers. Moreover, significantly prolonged Eu<sup>3+</sup> UC emission lifetime is observed in this system.
Topics & Concepts
LuminescenceMaterials scienceFluorescencePhoton upconversionAnalytical Chemistry (journal)Atomic physicsPhysicsChemistryOpticsChromatographyOptoelectronicsLuminescence Properties of Advanced MaterialsInorganic Fluorides and Related CompoundsLanthanide and Transition Metal Complexes