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Park J.,University of Turin | Park J.,CEA Grenoble | Barbero N.,University of Turin | Yoon J.,Ecole Polytechnique Federale de Lausanne | And 12 more authors.
Physical Chemistry Chemical Physics | Year: 2014

Two novel symmetrical blue squaraine sensitizers were synthesized, which exhibit panchromatic light harvesting and a record efficiency over 6% with Jsc exceeding 14 mA cm-2, and Voc over 620 mV under 1 sun. Their color, low cost, easiness of synthesis, and relatively high photo- and thermal stability open up the way for commercial applications. This journal is © the Partner Organisations 2014.


Abbotto A.,Milan Bicocca Solar Energy Research Center Solar | Abbotto A.,University of Perugia | Leandri V.,Milan Bicocca Solar Energy Research Center Solar | Manfredi N.,Milan Bicocca Solar Energy Research Center Solar | And 5 more authors.
European Journal of Organic Chemistry | Year: 2011

A new class of tribranched dye-sensitized solar cell (DSC) sensitizers carrying two conjugated donors and two acceptor/anchoring groups is introduced. The approach leads to significantly different optical properties and enhanced stability with respect to related di- and monobranched dyes and yields power conversion efficiencies of up to 5.05 %, which is possibly limited by the computed nonoptimal dye packing on the semiconductor surface. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


PubMed | Milan Bicocca Solar Energy Research Center Solar
Type: Journal Article | Journal: Dalton transactions (Cambridge, England : 2003) | Year: 2012

The first examples of thiocyanate-free thiophene-substituted Ru(II) cyclometalated complexes, based on thiophene-derived 2-(2,4-difluorophenyl)pyridine ligands, are presented and investigated as photosensitizers in DSCs. Upon thiophene substitution the complexes presented enhanced optical properties compared to the reference dye with no thiophene substitution. DSCs based on the dithienyl-derived dye showed power conversion efficiencies up to 5.7%, more than twice that containing the complex without the thiophene substitution.

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