The synthesis and properties of three co-polymers obtained through a Knoevenagel poly-condensation are reported. They are soluble in organic solvents, filmable and solvatochromic. They are characterized through GPC, NMR and UV-visible spectroscopies, CV, and AFM. They display some proneness to form π-stacks, broad absorptions up to about 700 nm, HOMO and LUMO energies that fit those of [60]PCBM. The polymers are incorporated in blends with PCBM within BHJ devices. The best results are found for PSCs obtained from P1 (2.7 % PCE). The insertion of alkylsulfanyl chains improves the photovoltaic performances, with respect to those of alkyl-substituted analogous polymers. The Jsc of the devices are greatly enhanced, supporting the employment of (alkylsulfanyl)thienyl units as base units in photoactive materials.

Polymers with Alkylsulfanyl Side Chains for Bulk Heterojunction Solar Cells: Toward a Greener Strategy / Tassinari, Francesco; Libertini, Emanuela; Parenti, Francesca; Mucci, Adele. - In: MACROMOLECULAR CHEMISTRY AND PHYSICS. - ISSN 1521-3935. - 218:(2017), pp. 1-14. [10.1002/macp.201700111]

Polymers with Alkylsulfanyl Side Chains for Bulk Heterojunction Solar Cells: Toward a Greener Strategy

TASSINARI, FRANCESCO;LIBERTINI, Emanuela;PARENTI, Francesca;MUCCI, Adele
2017

Abstract

The synthesis and properties of three co-polymers obtained through a Knoevenagel poly-condensation are reported. They are soluble in organic solvents, filmable and solvatochromic. They are characterized through GPC, NMR and UV-visible spectroscopies, CV, and AFM. They display some proneness to form π-stacks, broad absorptions up to about 700 nm, HOMO and LUMO energies that fit those of [60]PCBM. The polymers are incorporated in blends with PCBM within BHJ devices. The best results are found for PSCs obtained from P1 (2.7 % PCE). The insertion of alkylsulfanyl chains improves the photovoltaic performances, with respect to those of alkyl-substituted analogous polymers. The Jsc of the devices are greatly enhanced, supporting the employment of (alkylsulfanyl)thienyl units as base units in photoactive materials.
2017
218
1
14
Polymers with Alkylsulfanyl Side Chains for Bulk Heterojunction Solar Cells: Toward a Greener Strategy / Tassinari, Francesco; Libertini, Emanuela; Parenti, Francesca; Mucci, Adele. - In: MACROMOLECULAR CHEMISTRY AND PHYSICS. - ISSN 1521-3935. - 218:(2017), pp. 1-14. [10.1002/macp.201700111]
Tassinari, Francesco; Libertini, Emanuela; Parenti, Francesca; Mucci, Adele
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1135561
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