http://www.cnr.it/ontology/cnr/individuo/prodotto/ID191575

Organic Dyes Containing A Triple Bond Spacer for Dye Sensitized Solar Cells: A Combined Experimental and Theoretical Investigation (Articolo in rivista)

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Organic Dyes Containing A Triple Bond Spacer for Dye Sensitized Solar Cells: A Combined Experimental and Theoretical Investigation (Articolo in rivista) (literal)

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Angela Scrascia, Mariachiara Pastore, Lunxiang Yin, Rosaria Anna Picca, Michele Manca, Ying-Cen Guo, Filippo De Angelis, Fabio Della Sala, Roberto Cingolani, Giuseppe Gigli, and Giuseppe Ciccarella (2011)
Organic Dyes Containing A Triple Bond Spacer for Dye Sensitized Solar Cells: A Combined Experimental and Theoretical Investigation
in Current organic chemistry; Bentham Science Publishers Ltd., Sharjah (Emirati Arabi Uniti)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Angela Scrascia, Mariachiara Pastore, Lunxiang Yin, Rosaria Anna Picca, Michele Manca, Ying-Cen Guo, Filippo De Angelis, Fabio Della Sala, Roberto Cingolani, Giuseppe Gigli, and Giuseppe Ciccarella (literal)

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http://www.ingentaconnect.com/content/ben/coc/2011/00000015/00000019/art00006?token=0047180b0bd91a3a6e58654624317b6f5747745d583f3f25535e4e6b63408e31b5cf6e4 (literal)

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Scuola Superiore ISUFI, Università del Salento, Via Arnesano, 73100, Lecce, Italy. Istituto CNR di Scienze e Tecnologie Molecolari c/o Dipartimento di Chimica, Università di Perugia, Via Elce di Sotto 8, I-06123, Perugia, Italy. School of Chemistry, Dalian University of Technology, 116024 Dalian, P.R. China. E-mail: lxyin@dlut.edu.cn. Dipartimento di Scienza dei Materiali, Università del Salento, via Monteroni 73100 Lecce, Italy. Istituto Italiano di Tecnologia, Via Morego 30, Genova, 16152, Italy. Istituto Nanoscienze - CNR, National Nanotechnology Laboratory (NNL), Via Arnesano, 73100 Lecce, Italy. E-mail: giuseppe.ciccarella@unisalento.it Dipartimento di Ingegneria dell'Innovazione, Università del Salento, Via Monteroni, 73100, Lecce, Italy. (literal)

Titolo

Organic Dyes Containing A Triple Bond Spacer for Dye Sensitized Solar Cells: A Combined Experimental and Theoretical Investigation (literal)

Abstract

Novel Donor-pi-Acceptor triphenylamine-based dyes were synthesized and characterized with regard to their photophysical and photoelectrochemical properties by introducing the ethynyl-2-thienyl moiety as spacer (YS-1). The modification of the donor triphenylamine, performed by intodroducing two p-methoxy groups gave the YS-2 dye. Experimental results showed that the UV-Vis absorption spectra changed exhibiting the increasing of the molar extinction coefficient as well as the red-shift in dichloromethane solution. The maximum power conversion efficiency under standard global AM 1.5 illumination for YS-1 was 4.1% rising to 5.3% when the cell was sensitized with YS-2. The interpretation of the improvement and the discussion of the experimental results were corroborated by Time-Dependent Density-Functional Theory calculations, carried out for the photosensitizers in vacuo and in solution. In particular, the effects on the spectroscopic properties of the dyes due to the presence of the solvent and to the common deprotonation of the carboxylic unit in polar solvents have been investigated. (literal)

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