Photon upconversion through triplet exciton-mediated energy relay.

ABSTRACT: Exploration of upconversion luminescence from lanthanide emitters through energy migration has profound implications for fundamental research and technology development. However, energy migration-mediated upconversion requires stringent experimental conditions, such as high power excitation and special migratory ions in the host lattice, imposing selection constraints on lanthanide emitters. Here we demonstrate photon upconversion of diverse lanthanide emitters by harnessing triplet exciton-mediated energy relay. Compared with gadolinium-based systems, this energy relay is less dependent on excitation power and enhances the emission intensity of Tb³⁺ by 158-fold. Mechanistic investigations reveal that emission enhancement is attributable to strong coupling between lanthanides an

SUBMITTER: Han S 

PROVIDER: S-EPMC8211736 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature