Effects of donor position on dibenzofulvene-based organic dyes for photovoltaics

  • Giuseppina Anna Corrente
  • Eduardo Fabiano
  • Luisa De Marco
  • Gianluca Accorsi
  • Roberto Giannuzzi
  • Antonio Cardone
  • Giuseppe Gigli
  • Giuseppe Ciccarella
  • Agostina-Lina Capodilupo
Article
  • 216 Downloads

Abstract

A series of push–pull organic dyes based on the cyanoacrylic acid as the acceptor/anchoring group, a dibenzofulvene (DBF) connected with thienyl rings as the π-bridge, and donor units linked to different positions of the DBF molecule were synthetized and studied. The effects of the donor position on optical and photovoltaic properties were investigated through photophysics, electrochemical and photovoltaic measurements. The results uphold photovoltaic performances largely depend on the electronic structure of the dyes with a synergistic interaction between donor and acceptor groups. In detail, a fine tuning of the photophysical properties can be reached simply selecting the position of the donor unit on the DBF molecule. In particular, the dyes bearing the donor unit on the 3,6-positions of the DBF show better performances in term of light absorption and cell efficiency with respect to the dyes with the donor unit on the 2,7-positions.

Notes

Acknowledgements

This research was supported by “Nanotecnologie Molecolari per la Salute dell’Uomo e l’Ambiente_MAAT” Cod. PON02_00563_3316357. CUP: B31C12001230005, by the project EFOR—Energia da Fonti Rinnovabili (Iniziativa CNR per il Mezzogiorno L. 191/2009 art. 2 comma 44), by PON 254/Ric. Potenziamento del “CENTRO RICERCHE PER LA SALUTE DELL’UOMO E DELL’AMBIENTE” Cod. PONa3_00334. CUP: F81D11000210007 and and by Regione PUGLIA (APQ Reti di Laboratorio, project “PHOEBUS” cod. 31).

Supplementary material

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Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Giuseppina Anna Corrente
    • 1
    • 2
    • 3
  • Eduardo Fabiano
    • 2
    • 4
  • Luisa De Marco
    • 2
  • Gianluca Accorsi
    • 1
  • Roberto Giannuzzi
    • 2
  • Antonio Cardone
    • 5
  • Giuseppe Gigli
    • 1
    • 6
  • Giuseppe Ciccarella
    • 1
    • 7
  • Agostina-Lina Capodilupo
    • 1
  1. 1.CNR NANOTEC - Institute of Nanotechnology c/o Campus EcotekneUniversity of SalentoLecceItaly
  2. 2.Center for Biomolecular Nanotechnologies (CBN) Fondazione Istituto Italiano di Tecnologia (IIT)ArnesanoItaly
  3. 3.Dipartimento di Ingegneria dell’InnovazioneUniversità del SalentoLecceItaly
  4. 4.Institute for Microelectronics and Microsystems (CNR-IMM)LecceItaly
  5. 5.Istituto di Chimica dei Composti OrganoMetallici (ICCOM)Consiglio Nazionale delle Ricerche CNRBariItaly
  6. 6.Dipartimento di Matematica e Fisica”Ennio De Giorgi”Università del SalentoLecceItaly
  7. 7.Dipartimento di Scienze e Tecnologie Biologiche e AmbientaliUniversita’ del Salento c/o Edificio “La Stecca”LecceItaly

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