SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:DiVA.org:umu-209301"
 

Sökning: onr:"swepub:oai:DiVA.org:umu-209301" > Color tuning of mul...

Color tuning of multi-resonant thermally activated delayed fluorescence emitters based on fully fused polycyclic amine/carbonyl frameworks

dos Santos, John Marques (författare)
Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, United Kingdom
Chan, Chin-Yiu (författare)
Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Motooka 744, Fukuoka, Nishi-ku, Japan
Tang, Shi (författare)
Umeå universitet,Institutionen för fysik
visa fler...
Hall, David (författare)
Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, United Kingdom; Laboratory for Computational Modeling of Functional Materials, Namur Institute of Structured Matter, University of Namur, 61 Rue de Bruxelles, Namur, Belgium
Matulaitis, Tomas (författare)
Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, United Kingdom
Cordes, David B. (författare)
Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, United Kingdom
Slawin, Alexandra M. Z. (författare)
Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, United Kingdom
Tsuchiya, Youichi (författare)
Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Motooka 744, Fukuoka, Nishi-ku, Japan
Edman, Ludvig, 1967- (författare)
Umeå universitet,Institutionen för fysik
Adachi, Chihaya (författare)
Center for Organic Photonics and Electronics Research (OPERA), Kyushu University, Motooka 744, Fukuoka, Nishi-ku, Japan
Olivier, Yoann (författare)
Laboratory for Computational Modeling of Functional Materials, Namur Institute of Structured Matter, University of Namur, 61 Rue de Bruxelles, Namur, Belgium
Zysman-Colman, Eli (författare)
Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews, St Andrews, United Kingdom
visa färre...
 (creator_code:org_t)
Royal Society of Chemistry, 2023
2023
Engelska.
Ingår i: Journal of Materials Chemistry C. - : Royal Society of Chemistry. - 2050-7526 .- 2050-7534. ; 11:24, s. 8263-8273
Relaterad länk:
https://doi.org/10.1...
visa fler...
https://umu.diva-por... (primary) (Raw object)
https://urn.kb.se/re...
https://doi.org/10.1...
visa färre...
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Two novel π-extended amine/carbonyl-based multi-resonance thermally activated delayed fluorescence (MR-TADF) emitters have been designed and synthesized. The two emitters are isomeric, composed of nine fused rings and show green-yellow emission. Sym-DiDiKTa and Asym-DiDiKTa possess tert-butyl groups distributed in a symmetrical and asymmetrical fashion, respectively, which significantly impact the single-crystal packing structure. The two compounds possess similar singlet-triplet energy gaps, ΔEST, of around 0.23 eV, narrowband emission characterized by a full-width at half-maximum, FWHM, of 29 nm and a photoluminescence quantum yield, ΦPL, of 70% and 53% for the symmetric and asymmetric counterparts, respectively, in toluene. Investigation in OLEDs demonstrated that the devices with Sym-DiDiKTa and Asym-DiDiKTa displayed electroluminescence maxima of 543 and 544 nm, and maximum external quantum efficiencies (EQEmax) of 9.8% and 10.5%, respectively. The maximum EQE was further improved to 19.9% by employing a hyperfluorescence strategy. We further present the first example of a neutral MR-TADF emitter incorporated in a LEC device where Sym-DiDiKTa acts as the emitter. The LEC shows a λEL at 551 nm and FWHM of 60 nm with luminance of 300 cd m−2 and a fast turn-on time of less than 2 s to 100 cd m−2

Ämnesord

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

Publikations- och innehållstyp

ref (ämneskategori)
art (ämneskategori)

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy