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Dye-sensitized solar cells : investigation of D-A-π-A organic sensitizers based on [1,2,5]selenadiazolo[3,4-c]pyridine

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dc.contributor.authorKnyazeva, Ekaterina A.
dc.contributor.authorWu, Wenjun
dc.contributor.authorChmovzh, Timofey N.
dc.contributor.authorRobertson, Neil
dc.contributor.authorWoollins, J. Derek
dc.contributor.authorRakitin, Oleg A.
dc.date.accessioned2018-01-18T00:31:30Z
dc.date.available2018-01-18T00:31:30Z
dc.date.issued2017-03-01
dc.identifier.citationKnyazeva , E A , Wu , W , Chmovzh , T N , Robertson , N , Woollins , J D & Rakitin , O A 2017 , ' Dye-sensitized solar cells : investigation of D-A-π-A organic sensitizers based on [1,2,5]selenadiazolo[3,4- c ]pyridine ' , Solar Energy , vol. 144 , pp. 134-143 . https://doi.org/10.1016/j.solener.2017.01.016en
dc.identifier.issn0038-092X
dc.identifier.otherPURE: 248757311
dc.identifier.otherPURE UUID: 10635358-55ec-46ae-b45f-a49c3570b77f
dc.identifier.otherScopus: 85009344276
dc.identifier.otherORCID: /0000-0002-1498-9652/work/31779148
dc.identifier.otherWOS: 000397550500015
dc.identifier.urihttps://hdl.handle.net/10023/12503
dc.descriptionThe authors gratefully acknowledge financial support from the Russian Science Foundation (grant no. 15-13-10022). Wenjun Wu thanks the Scientific Committee of Shanghai (14ZR1409700) for financial support. The authors thank the Leverhulme Trust for an International Network grant.en
dc.description.abstractWe report two series of D-A-π-A metal-free organic sensitizers for dye-sensitized solar cells (DSSCs) based on triphenylamine and N-hexyl-carbazole as electronic donors, respectively. Through varying auxiliary acceptors and π-spacers, several significant consequences on cell efficiency were identified: (i) a broadened UV-Vis absorption spectrum and low-lying LUMO level with [1,2,5]selenadiazolo [3,4-c] pyridine as auxiliary acceptor; (ii) compensation for the absorption valley around 400 nm in the UV-vis spectra by the introduction of a thiophene unit into the π-bridge; (iii) effective improvement of the power conversion efficiency (PCE) by means of cosensitization, leading to dye OKT-1 , 3.10% PCE, increased to 4.19% with squaraine dye SQ2 as co-sensitizer. The design criteria identified have opened the door for further optimization of this new dye family.
dc.format.extent10
dc.language.isoeng
dc.relation.ispartofSolar Energyen
dc.rights© 2017 Elsevier Ltd. All rights reserved. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1016/j.solener.2017.01.016en
dc.subjectDye-sensitized solar cellsen
dc.subject[1,2,5]Selenadiazolo[3,4-c] pyridineen
dc.subjectPower conversion efficiencyen
dc.subjectCo-sensitizeren
dc.subjectQD Chemistryen
dc.subjectNDASen
dc.subject.lccQDen
dc.titleDye-sensitized solar cells : investigation of D-A-π-A organic sensitizers based on [1,2,5]selenadiazolo[3,4-c]pyridineen
dc.typeJournal articleen
dc.contributor.sponsorThe Leverhulme Trusten
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. Office of the Principalen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doihttps://doi.org/10.1016/j.solener.2017.01.016
dc.description.statusPeer revieweden
dc.date.embargoedUntil2018-01-17
dc.identifier.grantnumberIN-2012-094en


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