Near-IR to Near-IR Upconversion Luminescence in Molecular Chromium Ytterbium Salts.

ABSTRACT: Upconversion photoluminescence in hetero-oligonuclear metal complex architectures featuring organic ligands is an interesting but still rarely observed phenomenon, despite its great potential from a basic research and application perspective. In this context, a new photonic material consisting of molecular chromium(III) and ytterbium(III) complex ions was developed that exhibits excitation-power density-dependent cooperative sensitization of the chromium-centered ² E/² T₁ phosphorescence at approximately 775 nm after excitation of the ytterbium band ² F_7/2 →² F_5/2 at approximately 980 nm in the solid state at ambient temperature. The upconversion process is insensitive to atmospheric oxygen and can be observed in

SUBMITTER: Kalmbach J 

PROVIDER: S-EPMC7589230 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature