Semiconducting P3HT microstructures: fibres and tubes obtained from macroporous silicon template

• Published in: Physica status solidi. PSS-RRL. Rapid research letters 2008-10, Vol.2 (5), p.206-208
• Main Authors: Palacios, R., Formentín, P., Trifonov, T., Estrada, M., Alcubilla, R., Pallarés, J., Marsal, L. F.
• Format: Article
• Language: English
• Subjects: 72.80.Le; 81.05.Lg; 81.05.Rm; 82.35.Gh; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Conductivity of specific materials; Electronic transport in condensed matter; Enginyeria de la telecomunicació; Exact sciences and technology; Fotònica; Photonics; Physics; Polymers; organic compounds (including organic semiconductors); Porous silicon; Silici porós; Telecomunicació òptica; Àrees temàtiques de la UPC
• ISSN: 1862-6254; 1862-6270
• DOI: 10.1002/pssr.200802162

Microtubes and microfibres composed of poly(3‐hexylthiophene) (P3HT) were fabricated by melt‐assisted templates using ordered macroporous silicon. We have studied the influence of the pore depth and the template type on the microstructure fabrication, where the templates were membranes or structures opened only at one end. Current– voltage (I–V) measurements demostrated that the resistivity of these P3HT microstructures was in the same order as that of homogeneous films, which allows them to be used in electronic devices. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) Poly(3‐hexylthiophene) (P3HT) is one of the most promising conjugated polymers for potential applications in organic solar cells, light‐emitting diodes and sensors. In this Letter the authors report the fabrication of ordered microstructures using P3HT by melt‐assisted template wetting. The current–voltage measurements obtained from these polymeric structures demonstrate that they could be used to develop new electronic and optoelectronic devices.