Peasecod-Like Hollow Upconversion Nanocrystals with Excellent Optical Thermometric Performance.

ABSTRACT: Trivalent lanthanide (Ln³⁺)-doped hollow upconversion nanocrystals (UCNCs) usually exhibit unique optical performance that cannot be realized in their solid counterparts, and thus have been receiving tremendous interest from their fundamentals to diverse applications. However, all currently available Ln³⁺-doped UCNCs are solid in appearance, the preparation of hollow UCNCs remains nearly untouched hitherto. Herein, a class of UCNCs based on Yb³⁺/Er³⁺-doped tetralithium zirconium octafluoride (Li₄ZrF₈:Yb/Er) featuring 2D layered crystal lattice is reported, which makes the fabrication of hollow UCNCs with a peasecod-like shape possible after Ln³⁺ doping. By employing the first-principle calculations, the unique pea

SUBMITTER: Fu H 

PROVIDER: S-EPMC7375223 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature