title: Combined Inter- and Intramolecular Charge-Transfer Processes for Highly Efficient Fluorescent Organic Light-Emitting Diodes with Reduced Triplet Exciton Quenching.
abstract: Inter- and intramolecular charge-transfer processes are combined using an exciplex-forming host and a thermally activated delayed fluorescent dopant, for fabricating efficient fluorescent organic light-emitting diodes along with the reduced efficiency roll-off at high current densities. Extra conversion on the host from triplet exciplexes to singlet exciplexes followed by energy transfer to the dopant reduces population of triplet excitons on dopant molecules, thereby reducing the triplet exciton annihilations at high current densities.
authors.affiliation: Department of Materials Science and Engineering, Seoul National University, Seoul, 151-742, South Korea.
authors.forename: Chang-Ki
authors.initials: CK
authors.lastname: Moon
authors.affiliation: Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan.
authors.forename: Katsuaki
authors.initials: K
authors.lastname: Suzuki
authors.affiliation: Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan.
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Shizu
authors.affiliation: Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, 744 Motooka, Nishi, Fukuoka, 819-0395, Japan.
authors.forename: Chihaya
authors.initials: C
authors.lastname: Adachi
authors.affiliation: Institute for Chemical Research, Kyoto University, Uji, Kyoto, 611-0011, Japan.
authors.forename: Hironori
authors.initials: H
authors.lastname: Kaji
authors.affiliation: Department of Materials Science and Engineering, Seoul National University, Seoul, 151-742, South Korea.|Research Institute of Advanced Materials (RIAM), Seoul National University, Seoul, 151-742, South Korea.
authors.forename: Jang-Joo
authors.initials: JJ
authors.lastname: Kim
keywords: exciplex; organic light-emitting diodes; thermally activated delayed fluorescence; triplet exciton quenching