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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| 1882-0786_ad392a.pdf | 901.73 kB | Adobe PDF | 見る/開く |
| タイトル: | Triarylborane-based thermally activated delayed fluorescence materials with an efficient reverse intersystem crossing |
| 著者: | Okumura, Ryosuke Kusakabe, Yu Rauch, Florian Lubczyk, Lukas Suzuki, Katsuaki Marder, Todd B. Kaji, Hironori    https://orcid.org/0000-0002-5111-3852 (unconfirmed) |
| 著者名の別形: | 奥村, 亮祐 日下部, 悠 鈴木, 克明 梶, 弘典 |
| 発行日: | Apr-2024 |
| 出版者: | IOP Publishing The Japan Society of Applied Physics |
| 誌名: | Applied Physics Express |
| 巻: | 17 |
| 号: | 4 |
| 論文番号: | 041003 |
| 抄録: | Efficient reverse intersystem crossing (RISC) is an important process for thermally activated delayed fluorescence (TADF) to suppress efficiency roll-off in organic LEDs (OLEDs). Enhancing spin–orbit coupling is effective for fast RISC and is achieved by mediating a locally excited triplet state when RISC occurs between charge transfer states. Here, we experimentally confirmed that efficient RISC occurred in triarylborane-based TADF emitters named Phox-[Me]π, Phox-[MeO]π, and [MeO]3Ph-[FMe]π. The three emitters showed large RISC rate constants exceeding 10⁶ s⁻¹. The Phox-[Me]π-based OLED exhibited higher maximum external quantum efficiency (EQEₘₐₓ = 10.0%) compared to the Phox-[MeO]π-based OLED (EQEₘₐₓ = 6.7%). |
| 著作権等: | © 2024 The Author(s). Published on behalf of The Japan Society of Applied Physics by IOP Publishing Ltd Content from this work may be used under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| URI: | http://hdl.handle.net/2433/290471 |
| DOI(出版社版): | 10.35848/1882-0786/ad392a |
| 出現コレクション: | 学術雑誌掲載論文等 |
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