Open AccessTADF Parameters in the Solid State: An Easy Way to Draw Wrong Conclusions
Author(s) -
Tomas Serevičius,
Rokas Skaisgiris,
Gediminas Kreiza,
Jelena Dodonova,
Karolis Kazlauskas,
Edvinas Orentas,
Sigitas Tumkevičius,
Saulius Juršėnas
Publication year - 2021
Publication title -
the journal of physical chemistry. a/the journal of physical chemistry. a.
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.756
H-Index - 235
eISSN - 1520-5215
pISSN - 1089-5639
DOI - 10.1021/acs.jpca.0c10391
Subject(s) - fluorescence , solid state , quantum yield , yield (engineering) , oxygen , materials science , computer science , chemistry , physics , optics , organic chemistry , composite material
The successful development of thermally activated delayed fluorescence (TADF) OLEDs relies on advances in molecular design. To guide the molecular design toward compounds with preferable properties, special care should be taken while estimating the parameters of prompt and delayed fluorescence. Mistakes made in the initial steps of analysis may lead to completely misleading conclusions. Here we show that inaccuracies usually are introduced in the very first steps while estimating the solid-state prompt and delayed fluorescence quantum yields, resulting in an overestimation of prompt fluorescence (PF) parameters and a subsequent underestimation of the delayed emission (DF) yield and rates. As a solution to the problem, a working example of a more sophisticated analysis is provided, stressing the importance of in-depth research of emission properties in both oxygen-saturated and oxygen-free surroundings.