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dc.contributor.authorWitt, Julia
dc.contributor.authorMischok, Andreas
dc.contributor.authorTenopala Carmona, Francisco
dc.contributor.authorHillebrandt, Sabina
dc.contributor.authorButscher, Julian Friedrich
dc.contributor.authorGather, Malte Christian
dc.identifier.citationWitt , J , Mischok , A , Tenopala Carmona , F , Hillebrandt , S , Butscher , J F & Gather , M C 2024 , ' High-brightness blue polariton organic light-emitting diodes ' , ACS Photonics , vol. 11 , no. 5 , pp. 1844–1850 .
dc.identifier.otherORCID: /0000-0002-4857-5562/work/159433168
dc.descriptionH2020 Marie Sklodowska-Curie Actions - 101023743; University of St Andrews; Alexander von Humboldt-Stiftung; European Research Council - 101097878; Deutsche Forschungsgemeinschaft - RTG2591en
dc.description.abstractPolariton organic light-emitting diodes (POLEDs) use strong light-matter coupling as an additional degree of freedom to tailor device characteristics, thus making them ideal candidates for many applications, such as room temperature laser diodes and high-color purity displays. However, achieving efficient formation of and emission from exciton-polaritons in an electrically driven device remains challenging due to the need for strong absorption, which often induces significant nonradiative recombination. Here, we investigate a novel POLED architecture to achieve polariton formation and high-brightness light emission. We utilize the blue-fluorescent emitter material 4,4′-Bis(4-(9H-carbazol-9-yl)styryl)biphenyl (BSBCz), which exhibits strong absorption and a highly horizontal transition-dipole orientation as well as a high photoluminescence quantum efficiency, even at high doping concentrations. We achieve a peak luminance of over 20,000 cd/m2 and external quantum efficiencies of more than 2%. To the best of our knowledge, these values represent the highest reported so far for electrically driven polariton emission from an organic semiconductor emitting in the blue region of the spectrum. Our work therefore paves the way for a new generation of efficient and powerful optoelectronic devices based on POLEDs.
dc.relation.ispartofACS Photonicsen
dc.titleHigh-brightness blue polariton organic light-emitting diodesen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. Sir James Mackenzie Institute for Early Diagnosisen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews. Organic Semiconductor Centreen
dc.contributor.institutionUniversity of St Andrews. Institute of Behavioural and Neural Sciencesen
dc.contributor.institutionUniversity of St Andrews. Biomedical Sciences Research Complexen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.description.statusPeer revieweden

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