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dc.contributor.authorSajjad, Muhammad T.
dc.contributor.authorRuseckas, Arvydas
dc.contributor.authorSamuel, Ifor David William
dc.identifier.citationSajjad , M T , Ruseckas , A & Samuel , I D W 2020 , ' Enhancing exciton diffusion length provides new opportunities for organic photovoltaics ' , Matter , vol. 3 , no. 2 , pp. 341-354 .
dc.identifier.otherPURE: 268762027
dc.identifier.otherPURE UUID: e3e0c7e4-4bed-4d32-8cd8-122fbad1011a
dc.identifier.otherWOS: 000555892900008
dc.identifier.otherScopus: 85088895836
dc.descriptionAuthors acknowledge support from the European Research Council (grant 321305) And are also grateful to EPSRC for support from grants (EP/L017008/1) and (EP/M025330/1).en
dc.description.abstractOrganic semiconductors can potentially revolutionize solar cell technology by offering very thin, lightweight, and flexible modules for outdoor and indoor power generation. Light absorption in organic semiconductors generates a bound electron-hole pair (exciton), which needs to travel to the interface between electron donor and acceptor materials to dissociate into charge carriers. Because the exciton diffusion length in organic semiconductors is typically much shorter than the light absorption depth (∼100 nm), planar donor-acceptor heterojunctions are inefficient, and most effort has been dedicated to optimization of bulk heterojunctions with nanoscale phase separation. In this Perspective, we review recent findings and new approaches to increase the exciton diffusion length and discuss how these improvements can benefit environmentally friendly production of solar modules using organic nanoparticles or graded heterojunctions obtained by sequential deposition of electron donor and acceptor.
dc.rightsCopyright © 2020 Published by Elsevier Inc. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectOrganic solar cellen
dc.subjectOrganic semiconductoren
dc.subjectEnergy transferen
dc.subjectQC Physicsen
dc.titleEnhancing exciton diffusion length provides new opportunities for organic photovoltaicsen
dc.typeJournal itemen
dc.contributor.sponsorEuropean Research Councilen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews. Centre for Biophotonicsen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.description.statusPeer revieweden

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