Section 65
Chapter 64,251

Temperature-dependence on the optical properties and the phase separation of polymerfullerene thin films

Gerald, F. Malgas; David, E. Motaung; Christopher, J. Arendse

Journal of Materials Science 47(10): 4282-4289


ISSN/ISBN: 0022-2461
DOI: 10.1007/s10853-012-6278-5
Accession: 064250940

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A detailed study on the thermal transition of poly (3-hexylthiophene) (P3HT) and blends was investigated by differential scanning calorimetry, while the morphological, phase separation and the transformation in the optical properties were probed by thermal-atomic force microscopy (AFM), polarized optical microscopy (POM) and spectroscopic ellipsometry (SE). The inclusion of fullerenes on the polymer structure confirms the formation and evolution of a new endothermic transition at high temperatures. Se revealed that the refractive index and extinction coefficient of the films increased with annealing temperature up to 140 °C due to the suppressed diffusion of Pcbm molecules into the blend.

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