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dc.contributor.authorVezie, M. S.en
dc.contributor.authorFew, S.en
dc.contributor.authorMeager, I.en
dc.contributor.authorPieridou, Galatia K.en
dc.contributor.authorDörling, B.en
dc.contributor.authorAshraf, R. S.en
dc.contributor.authorGoñi, A. R.en
dc.contributor.authorBronstein, H.en
dc.contributor.authorMcCulloch, I.en
dc.contributor.authorHayes, Sophia C.en
dc.contributor.authorCampoy-Quiles, M.en
dc.contributor.authorNelson, J.en
dc.creatorVezie, M. S.en
dc.creatorFew, S.en
dc.creatorMeager, I.en
dc.creatorPieridou, Galatia K.en
dc.creatorDörling, B.en
dc.creatorAshraf, R. S.en
dc.creatorGoñi, A. R.en
dc.creatorBronstein, H.en
dc.creatorMcCulloch, I.en
dc.creatorHayes, Sophia C.en
dc.creatorCampoy-Quiles, M.en
dc.creatorNelson, J.en
dc.description.abstractThe specific optical absorption of an organic semiconductor is critical to the performance of organic optoelectronic devices. For example, higher light-harvesting efficiency can lead to higher photocurrent in solar cells that are limited by sub-optimal electrical transport. Here, we compare over 40 conjugated polymers, and find that many different chemical structures share an apparent maximum in their extinction coefficients. However, a diketopyrrolopyrrole-thienothiophene copolymer shows remarkably high optical absorption at relatively low photon energies. By investigating its backbone structure and conformation with measurements and quantum chemical calculations, we find that the high optical absorption can be explained by the high persistence length of the polymer. Accordingly, we demonstrate high absorption in other polymers with high theoretical persistence length. Visible light harvesting may be enhanced in other conjugated polymers through judicious design of the structure. © 2016 Macmillan Publishers Limited. All rights reserved.en
dc.sourceNature Materialsen
dc.subjectOrganic polymersen
dc.subjectQuantum chemistryen
dc.subjectOptoelectronic devicesen
dc.subjectLight absorptionen
dc.subjectQuantum chemical calculationsen
dc.subjectConjugated polymersen
dc.subjectPersistence lengthen
dc.subjectBackbone structuresen
dc.subjectElectrical transporten
dc.subjectElectromagnetic wave absorptionen
dc.subjectExtinction coefficientsen
dc.subjectOrganic optoelectronicsen
dc.subjectOther conjugated polymersen
dc.subjectSemiconductor devicesen
dc.titleExploring the origin of high optical absorption in conjugated polymersen
dc.description.endingpage753 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied SciencesΤμήμα Χημείας / Department of Chemistry
dc.description.notes<p>Cited By :29</p>en
dc.contributor.orcidHayes, Sophia C. [0000-0002-2809-6193]

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