Breath figures of P3HT and of its photovoltaic blend with PC71BM

POSTER

Abstract

Surface structured films of poly(3-hexyl thiophene) and of its photovoltaic blend with PC71BM are obtained by the breath fi gure technique, a micropatterning process that is based on the competition between solvent evaporation and water condensation. By this method, long range honey-comb like ordered structures of these functional organic blends are obtained. The characterization of these systems by several techniques including micron-resolved Raman Spectroscopy, microphotoluminiscence and Kelvin probe microscopy allow to probe that, due to the different hydrophobicity of both components of the blend, a hierarchical phase separation is obtained around the pores formed.

*Mineco (MAT2014-59187-R)

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Authors

  • Aurora Nogales

    • Instituto de Estructura de la Materia, IEM-CSIC
    • Instituto de estructura de la Materia, IEM-CSIC

  • J. Cui

    • Instituto de Estructura de la Materia, IEM-CSIC
    • Instituto de estructura de la Materia, IEM-CSIC
    • IEM-CSIC, Madrid, Spain

  • Esther Rebollar

    • Instituto de Quimica Fisica Rocasolano, IQFR-CSIC

  • Adolfo del Campo

    • Instituto de Ceramica y Vidrio, ICV-CSIC

  • Mircea Cotlet

    • Center for Functional Nanomaterials, BNL

  • Juan Rodriguez

    • Instituto de Ciencia y Tecnologia de Polimeros, ICTP-CSIC