A figure of merit for efficiency roll-off in TADF-based organic LEDs.

ABSTRACT: Organic light-emitting diodes (OLEDs) are a revolutionary light-emitting display technology that has been successfully commercialized in mobile phones and televisions^1,2. The injected charges form both singlet and triplet excitons, and for high efficiency it is important to enable triplets as well as singlets to emit light. At present, materials that harvest triplets by thermally activated delayed fluorescence (TADF) are a very active field of research as an alternative to phosphorescent emitters that usually use heavy metal atoms^3,4. Although excellent progress has been made, in most TADF OLEDs there is a severe decrease of efficiency as the drive current is increased, known as efficiency roll-off. So far, much of the literature suggests that efficiency roll-off shou

SUBMITTER: Diesing S 

PROVIDER: S-EPMC10972759 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature