Abstract

Alkyl thiols are processing additives for bulk heterojunction (BHJ) solar cells useful for substituting post-production treatment with low energy consuming processes (1). They modify the solubility of donor:acceptor couple in the host solvent, impacting solid state nanoscale phase separation. After deposition, thiol solvent presumably evaporates from the blend. Conjugated structures with pending alkylthiol groups could be interesting for ternary blend (2) polymer solar cells. Such materials could not only optimize the active layer morphology, but contribute by means of their conjugated structure to light harvesting and charge generation processes operating in the solar cell. Building on our experience in the synthesis of thiolated materials (3), we recently synthesized a family of organic semiconductors with low bandgap and pending alkylthiol groups. Their study in all organic or hybrid nanostructures represents an unexplored dimension in new generation photovoltaics. We present their synthesis and demonstrate the photovoltaic response of one of these compounds employed as additive in P3HT:PCBM solar cells. (1) Solar Energy 2011, 85,1226; (2) Adv. Mater. 2013, 25, 4245; (3) J. Org. Chem. 2007,72, 10272; Eur. J. Org. Chem. 2011, 529; Curr. Org. Synth., 2012, 9, 764.

Autore Pugliese

• Operamolla Alessandra , Punzi Angela , Farinola Gianluca Maria

Tutti gli autori

• OPERAMOLLA A.;PUNZI A.;FARINOLA G.M.

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Anno di pubblicazione

2014

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