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Article Dans Une Revue RSC Advances Année : 2016

Incorporation of spirobifluorene regioisomers in electron-donating molecular systems for organic solar cells

Résumé

We report herein the synthesis and characterizations of new small molecules for organic photovoltaics including diketopyrrolopyrrole and spirobifluorene. Two grafting positions of the spirobifluorene units are used leading to two regioisomers with different optoelectronic properties. Despite, the moderate photovoltaic performances, we show that the incorporation of spirobifluorene as a three-dimension platform into conjugated material backbones allows the increase of dimensionality and brings a more isotropic character to the charge transport properties of the final materials. The solubility is also increased despite the low density of grafted alkyl side-chains, which is an important feature for the future of this technology.

Domaines

Chimie

Dates et versions

hal-01298760 , version 1 (06-04-2016)

Identifiants

Citer

Ibrahim Bulut, Patricia Chávez, Sadiara Fall, Stephane Mery, Benoît Heinrich, et al.. Incorporation of spirobifluorene regioisomers in electron-donating molecular systems for organic solar cells. RSC Advances, 2016, 6 (31), pp.25952--25959. ⟨10.1039/C6RA02085B⟩. ⟨hal-01298760⟩
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