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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.identifier248757311
dc.identifier10635358-55ec-46ae-b45f-a49c3570b77f
dc.identifier85009344276
dc.identifier000397550500015
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.otherORCID: /0000-0002-1498-9652/work/31779148
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.format.extent999011
dc.language.isoeng
dc.relation.ispartofSolar Energyen
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.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.doi10.1016/j.solener.2017.01.016
dc.description.statusPeer revieweden
dc.date.embargoedUntil2018-01-17
dc.identifier.grantnumberIN-2012-094en


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