Organic Excitonic State Management by Surface Metallic Coupling of Inorganic Lanthanide Nanocrystals

Abstract

The ability to harness charges and spins for control of organic excitonic states is critical in developing high‐performance organic luminophores and optoelectronic devices. Here we report a facile strategy to efficiently manipulate electronic energy states of various organic phosphors by coupling them with inorganic lanthanide nanocrystals. We show that the metallic atoms exposed on the nanocrystal surface can introduce strong coupling effects to organic chromophores, when the organics are approaching to the nanocrystals. This unconventional organic‐inorganic hybridization enables a nearly 100% conversion of the singlet excitation to fast charge transfer luminescence that does not exist in pristine organics, which broadens the utility of organic phosphors in hybrid systems.