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1882-0786_acb3ad.pdf | 2.4 MB | Adobe PDF | 見る/開く |
タイトル: | Thioxanthone-containing blue thermally activated delayed fluorescent emitter |
著者: | Kanno, Natsuko Ren, Yongxia Kusakabe, Yu Suzuki, Katsuaki Shizu, Katsuyuki https://orcid.org/0000-0002-1835-0418 (unconfirmed) Tanaka, Hiroyuki Wada, Yoshimasa Nakagawa, Hiromichi Geldsetzer, Jan Kaji, Hironori https://orcid.org/0000-0002-5111-3852 (unconfirmed) |
著者名の別形: | 菅野, 奈都子 日下部, 悠 鈴木, 克明 志津, 功將 田中, 啓之 和田, 啓幹 中川, 博道 梶, 弘典 |
発行日: | Jan-2023 |
出版者: | IOP Publishing |
誌名: | Applied Physics Express |
巻: | 16 |
号: | 1 |
論文番号: | 011006 |
抄録: | Accelerating reverse intersystem crossing (RISC) without sacrificing fast radiative decay is effective in suppressing efficiency roll-off (eRO) in thermally activated delayed fluorescence (TADF)-based organic light-emitting diodes. We here report a TADF emitter, CC-TXO-I, combining a bicarbazole donor (CC) and a sulfur-containing acceptor (TXO). The CC is used to accelerate radiative decay via moderate donor-acceptor torsion angle, and the TXO is expected to provide fast RISC by the heavy-atom effect. We realized very large rate constants of RISC (kRISCs) of ∼10⁷ s⁻¹. Both kRISCs and rate constants of radiative decay of CC-TXO-I increased with increasing doping concentration, resulting in improved eROs. |
著作権等: | This is the Accepted Manuscript version of an article accepted for publication in Applied Physics Express. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at https://doi.org/10.35848/1882-0786/acb3ad. CC BY-NC-ND licence The full-text file will be made open to the public on 31 January 2024 in accordance with publisher's 'Terms and Conditions for Self-Archiving'. This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 |
URI: | http://hdl.handle.net/2433/282863 |
DOI(出版社版): | 10.35848/1882-0786/acb3ad |
出現コレクション: | 学術雑誌掲載論文等 |
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