[15p-E402-1~18] 12.4 Organic light-emitting devices and organic transistors

△ [15p-E402-9] Intramolecular triplet-triplet up-conversion in dimer structures and their application for organic light-emitting diodes

〇(M2)Shoma Sasaki¹, Goushi Kenichi^1,2, Masashi Mamada¹, Chihaya Adachi^1,2 (1.OPERA, Kyushu Univ., 2.I2-CNER)

Keywords:triplet-triplet up-conversion, exciton utilizing efficiency, dimer structure molecule

Intermolecular triplet-tripler up-conversion (Inter-TTU) can convert non-luminescent trtriplet-tripler up-conversion (Inter-TTU) can convert non-luminescent tripler However, the improvement of external quantum efficiency by using intermolecular TTU is relatively small. This phenomena is originated from the concentration quenching effect in high doping concentration required for the activation of TTU. In this work, we focus on the intramolecular TTU, which can obtain TTU without other molecules and consider about their application for OLEDs.