2024
DOI: 10.1002/adma.202313656
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HLCT‐Type Acceptor Molecule‐Based Exciplex System for Highly Efficient Solution‐Processable OLEDs with Suppressed Efficiency Roll‐Offs

Yixiao Yin,
Xiaoyi Lai,
Qian Ma
et al.

Abstract: Exciplex systems are promising candidates for thermally activated delayed fluorescence (TADF) molecules because of the small energy difference between the lowest singlet and triplet excited states (ΔEST). However, realizing high‐efficiency and low‐external‐quantum‐efficiency (EQE) roll‐off in solution‐processed organic light‐emitting diodes (OLEDs) using an exciplex system remains a formidable challenge. In this study, two hybridized local and charge transfer (HLCT)‐type isomers with a spiro skeleton, 2‐tBuspo… Show more

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Cited by 19 publications
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“…Organic light-emitting diodes (OLEDs) have attracted great attention with the features of ultrathinness, lightweight, flexibility, energy conservation, and eco friendliness. Under the continuous efforts in recent decades, OLEDs have become dominant in flat panel displays and lightings. Nonetheless, to further improve performances, new efficient organic electroluminescent (EL) materials are still constantly developed. Compared to its counterparts, thermally activated delayed fluorescence (TADF) is believed to integrate the advantages of fluorescence (FL) and phosphorescence (PH) in low cost, environmental friendliness, and 100% exciton harvesting, therefore, rapidly emerged as one of the main candidates for next-generation EL materials. …”
Section: Introductionmentioning
confidence: 99%
“…Organic light-emitting diodes (OLEDs) have attracted great attention with the features of ultrathinness, lightweight, flexibility, energy conservation, and eco friendliness. Under the continuous efforts in recent decades, OLEDs have become dominant in flat panel displays and lightings. Nonetheless, to further improve performances, new efficient organic electroluminescent (EL) materials are still constantly developed. Compared to its counterparts, thermally activated delayed fluorescence (TADF) is believed to integrate the advantages of fluorescence (FL) and phosphorescence (PH) in low cost, environmental friendliness, and 100% exciton harvesting, therefore, rapidly emerged as one of the main candidates for next-generation EL materials. …”
Section: Introductionmentioning
confidence: 99%