Synthesis of organic–inorganic hybrids based on the conjugated polymer P3HT and mesoporous silicon

Organic–inorganic hybrids are a class of functional materials that combine favorable properties of their constituents to achieve an overall improved performance for a wide range of applications. This article presents the synthesis route for P3HT-porous silicon hybrids for thermoelectric applications. The conjugated polymer P3HT is incorporated into the porous silicon matrix by means of melt infiltration. Gravimetry, sorption isotherms and energy dispersive X-ray spectroscopy (EDX) mapping indicate that the organic molecules occupy more than 50% of the void space in the inorganic host. We demonstrate that subsequent diffusion-based doping of the confined polymer in a FeCl3 solution increases the electrical conductivity of the hybrid by five orders of magnitude compared to the empty porous silicon host.

Subjects

Melt infiltration

Mesoporous silicon

Organic–inorganic hybrid

P3HT

DDC Class

530: Physik

Funding(s)

Thermoelektrische Hybridmaterialien basierend auf porösem Silizium: der Zusammenhang zwischen makroskopischen Transportphänomenen und mikroskopischer Struktur und elementaren Anregungen

Publication version

publishedVersion

Lizenz

https://creativecommons.org/licenses/by/4.0/

Name

1-s2.0-S1387181122004735-main.pdf

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1.68 MB

Format

Adobe PDF

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Synthesis of organic–inorganic hybrids based on the conjugated polymer P3HT and mesoporous silicon