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Article Dans Une Revue Solar Energy Materials and Solar Cells Année : 2008

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

Olivier Alévêque
Philippe Leriche
Nicolas Cocherel
  • Fonction : Auteur
Pierre Frère
Antonio Cravino
  • Fonction : Auteur
Jean Roncali

Résumé

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.

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hal-03027832 , version 1 (27-11-2020)

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Olivier Alévêque, Philippe Leriche, Nicolas Cocherel, Pierre Frère, Antonio Cravino, et al.. Star-shaped conjugated systems derived from dithiafulvenyl-derivatized triphenylamines as active materials for organic solar cells. Solar Energy Materials and Solar Cells, 2008, 92 (9), pp.1170 - 1174. ⟨10.1016/j.solmat.2008.04.006⟩. ⟨hal-03027832⟩
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