Understanding the internal heavy-atom effect on thermally activated delayed fluorescence: application of Arrhenius and Marcus theories for spin-orbit coupling analysis

• Published in: Journal of materials chemistry. C, Materials for optical and electronic devices Vol. 1; no. 2; pp. 7925 - 7934
• Main Authors: Mo ka, Micha, Serdiuk, Illia E, Kozakiewicz, Karol, Hoffman, Estera, Szumilas, Jan, Kubicki, Aleksander, Park, Soo Young, Bojarski, Piotr
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 26.05.2022
• Subjects: Atomic energy levels; Charge transfer; Coupling (molecular); Data analysis; Emitters; Empirical analysis; Energy gap; Fluorescence; Organic light emitting diodes; Photoluminescence; Spin-orbit interactions

Hybrid organic emitters containing abundant heavy atoms (HAs) are of rapidly growing interest for organic light emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF). As substitutes of expensive and toxic heavy-metals, HAs can accelerate reverse intersystem crossing (rISC)...