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The structure of the novel donor\u2013acceptor\u2013\u03c0\u2010bridge\u2013acceptor (D\u2013A\u2013\u03c0\u2013A) dye incorporates a triphenylamine (TPA) segment and 4\u2010(benzo[c][1,2,5]thiadiazol\u20104\u2010ylethynyl)benzoic acid (BTEBA). The triphenylamine unit is widely used as an electron donor for photosensitizers, owing to its nonplanar molecular configuration and excellent electron\u2010donating capability, whereas 4\u2010(benzo[c][1,2,5]thiadiazol\u20104\u2010ylethynyl)benzoic acid is used as an electron acceptor unit. The influences of I<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup>\/I<jats:sup>\u2212<\/jats:sup>, [Co(bpy)<jats:sub>3<\/jats:sub>]<jats:sup>3+\/2+<\/jats:sup> and [Cu(tmby)<jats:sub>2<\/jats:sub>]<jats:sup>2+\/+<\/jats:sup> (tmby=4,4\u2032,6,6\u2032\u2010tetramethyl\u20102,2\u2032\u2010bipyridine) as redox electrolytes on the DSSC device performance were also investigated. The maximal monochromatic incident photon\u2010to\u2010current conversion efficiency (IPCE) reached 81\u2009% and the solar light to electrical energy conversion efficiency of devices with [Cu(tmby)<jats:sub>2<\/jats:sub>]<jats:sup>2+\/+<\/jats:sup> reached 7.15\u2009%. The devices with [Co(bpy)<jats:sub>3<\/jats:sub>]<jats:sup>3+\/2+<\/jats:sup> and I<jats:sub>3<\/jats:sub><jats:sup>\u2212<\/jats:sup>\/I<jats:sup>\u2212<\/jats:sup> electrolytes gave efficiencies of 5.22\u2009% and 6.14\u2009%, respectively. The lowest device performance with a [Co(bpy)<jats:sub>3<\/jats:sub>]<jats:sup>3+\/2+<\/jats:sup>\u2010based electrolyte is attributed to increased charge recombination.<\/jats:p>","DOI":"10.1002\/cssc.201701949","type":"journal-article","created":{"date-parts":[[2017,12,11]],"date-time":"2017-12-11T05:52:54Z","timestamp":1512971574000},"page":"494-502","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":59,"title":["Molecular Design of Efficient Organic D\u2013A\u2013\u2013A Dye Featuring Triphenylamine as Donor Fragment for Application in Dye\u2010Sensitized Solar Cells"],"prefix":"10.1002","volume":"11","author":[{"given":"Parnian","family":"Ferdowsi","sequence":"first","affiliation":[{"name":"Department of Textile engineering, Faculty of Engineering University of Guilan  Rasht 41635-3756 Iran"},{"name":"Department of chemistry, Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne  1015 Lausanne Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yasemin","family":"Saygili","sequence":"additional","affiliation":[{"name":"Department of chemistry, Laboratory of Photomolecular Science, Institute of Chemical Sciences Engineering \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne  1015 Lausanne Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weiwei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Department of chemistry, Laboratory of Photonics and Interfaces, Institute of Chemical Sciences, Engineering \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne  1015 Lausanne Switzerland"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomas","family":"Edvinson","sequence":"additional","affiliation":[{"name":"Department of Engineering Sciences, Solid State Physics Uppsala University  Box 534 75121 Uppsala Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ladislav","family":"Kavan","sequence":"additional","affiliation":[{"name":"Department of chemistry, Laboratory of Photonics and Interfaces, Institute of Chemical Sciences, Engineering \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne  1015 Lausanne Switzerland"},{"name":"J. 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