| 초록 |
Two-dimensional (2D) perovskites, which consist of the organic and inorganic sublattices, have been regarded as efficient exciton-harvesting materials. Quantum and dielectric confinement in 2D perovskites provide stable excitonic medium even at the room temperature. However, due to the strong couplings between dipoles within the inorganic sublayer, exciton density decreases rapidly after the photoirradiation, which makes challenges for the full exploitation of excitons. Here, we report a novel strategy which allows the efficient energy transport before exciton is quenched. We manipulated the dielectric environment of organic sublayer and employed solvent vapor annealing technique to engineer the surface structure of 2D perovskites and reduce the exciton quenching process. As a result, efficient energy transfer from 2D perovskites to various fluorescent probes was observed. |
