熱的に活性化された遅延光: 極性,剛性,凝縮段階での乱れ

D K Andrea Phan Huu¹, Sangeeth Saseendran¹, Rama Dhali¹

¹Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, 43124 Parma, Italy.

Journal of the American Chemical Society

|August 9, 2022

まとめ

この研究では,いくつかの状態のモデルを使用して,熱的に活性化された遅延光 (TADF) の光物理学を詳細に説明します. 不均質な拡大のような現象を説明します.

科学分野:

フォト物理学
オーガニック電子
量子化学について

背景:

熱で活性化された遅延光 (TADF) は,効率的な有機発光ダイオード (OLED) の重要なメカニズムです.
TADFを制御する光物理学的プロセスを理解することは,改良されたエミッター分子を設計するために不可欠です.

研究の目的:

TADFの光物理学の包括的な理解を提供するために.
異なる環境でTADFの行動を正確に予測するモデルを開発する.

主な方法:

いくつかの状態のモデルをパラメータ化 *ab initio* が採用された.
電子と分子運動の非アディアバティック結合を明示的に考慮する.
溶媒効果を考慮するためにオンスァーガーモデルが使用された.

主要な成果:

このモデルは,液体と固体の両方の放射スペクトルの時間的進化を定量的に再現します.
システム間の (逆) 交差速度の正確な予測
固体マトリックスにおける非均質な拡大の説明

結論:

開発されたモデルは,TADFの光物理学を研究するための堅固な枠組みを提供します.
環境要因は,TADFの排出特性に大きな影響を及ぼします.
この作業は,光電子アプリケーションのための高度なTADF材料の合理的な設計を容易にする.

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