Star-shaped conjugated systems derived from dithiafulvenyl-derivatized triphenylamines as active materials for organic solar cells

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TitreStar-shaped conjugated systems derived from dithiafulvenyl-derivatized triphenylamines as active materials for organic solar cells
Type de publicationArticle de revue
AuteurAlévêque, Olivier , Leriche, Philippe , Cocherel, Nicolas, Frère, Pierre , Cravino, Antonio , Roncali, Jean
EditeurElsevier
TypeArticle scientifique dans une revue à comité de lecture
Année2008
LangueAnglais
Date2008/09
Numéro9
Pagination1170 - 1174
Volume92
Titre de la revueSolar Energy Materials and Solar Cells
ISSN0927-0248
Mots-clésSolar cells, Star-shaped Systems, Tetrathiafulvalene, Triphenylamine
Résumé en anglais

Hybrid conjugated systems consisting of a triphenylamine core substituted by three dithiafulvenyl moieties have been synthesized and tested as active materials in organic field-effect transistors and photovoltaic devices. UV–vis. spectroscopy studies demonstrate that, despite their amorphous character shown by X-ray diffraction and differential scanning calorimetry, strong interactions exist in these materials as an aggregative band is observed at low energies. A first evaluation of their potentialities as p semiconductor in organic field-effect transistors shows significant hole mobilities. For bilayer photovoltaic devices, a power conversion efficiency of 0.11% is observed and the external quantum efficiency of the cell under monochromatic irradiation shows a non-negligible contribution of the aggregative band.

URL de la noticehttp://okina.univ-angers.fr/publications/ua1918
DOI10.1016/j.solmat.2008.04.006
Lien vers le document

http://dx.doi.org/10.1016/j.solmat.2008.04.006