Green-to-UV photon upconversion enabled by new perovskite nanocrystal-transmitter-emitter combination
Mio Koharagi, Naoyuki Harada, Keisuke Okumura, Junji Miyano, Shota Hisamitsu, Nobuo Kimizuka, Nobuhiro Yanai
Abstract
The first example of triplet-triplet annihilation-based photon upconversion (TTA-UC) from green light to ultraviolet (UV) light sensitized by lead halide perovskite nanocrystals is demonstrated. The combination of a new transmitter that extracts triplet energy from perovskite and a UV emitter with a low triplet energy level lengthens the excitation wavelength of perovskite-sensitized upconverted UV emission.
Topics & Concepts
Photon upconversionPerovskite (structure)NanocrystalCommon emitterMaterials scienceUltravioletHalideOptoelectronicsWavelengthExcitationAnnihilationPhotochemistryNanotechnologyDopingChemistryPhysicsInorganic chemistryQuantum mechanicsCrystallographyLuminescence and Fluorescent MaterialsPerovskite Materials and ApplicationsOrganic Light-Emitting Diodes Research