| 초록 |
Perovskite quantum dots (PeQDs) have received much attention due to excellent properties. However, due to their low efficiency under near-infrared (NIR) light excitation, potential applications have been limited. Recently, upconversion nanoparticle (UCNP) sensitized PeQD has been reported but low quantum yield of UCNPs and photoluminescence (PL) intensity of PeQDs film have still remained as challenges. In this work, UCNP sensitized PeQDs and polystyrene-block-poly(2-vinylpyridine) (PS-b-P2VP) capped gold nanorods (AuNRs) were deposited on a metallic reflector, forming AuNRs/UCNPs and PeQDs/Ag film configuration. By exploiting gap plasmon polariton and localized surface plasmon effects, PL intensity of PeQDs increased under NIR excitation. Furthermore, PS-b-P2VP used as capping ligand prevented PL quenching from the direct contact of AuNRs and Ag film. This work provided a new platform to boost PL intensity of PeQD film under NIR excitation. |
