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Published on: December 27, 2018
Combined Inter- and Intramolecular Charge-Transfer Processes for Highly Efficient Fluorescent Organic Light-Emitting
Chang-Ki Moon1, Katsuaki Suzuki2, Katsuyuki Shizu2
1Department of Materials Science and Engineering, Seoul National University, Seoul, 151-742, South Korea.
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.
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