Finite-Size Effects on Energy Transfer between Dopants in Nanocrystals.

ABSTRACT: Many phosphor materials rely on energy transfer (ET) between optically active dopant ions. Typically, a donor species absorbs light of one color and transfers the energy to an acceptor species that emits light of a different color. For many applications, it is beneficial, or even crucial, that the phosphor is of nanocrystalline nature. Much unlike the widely recognized finite-size effects on the optical properties of quantum dots, the behavior of optically active ions is generally assumed to be independent of the size or shape of the optically inactive host material. Here, we demonstrate that ET between optically active dopants is also impacted by finite-size effects: Donor ions close to the surface of a nanocrystal (NC) are likely to have fewer acceptors in proximity compared to donors in

SUBMITTER: Mangnus MJJ 

PROVIDER: S-EPMC9026268 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature