SCHOLARLY PUBLICATION

Morphology and Phase Segregation of Spin-Casted Films of Polyfluorene/PCBM Blends

Svante Nilsson, Andrzej Bernasik, Andrzej Budkowski, Ellen Moons

📖 Macromolecules → 📅 2007-10-10 🔗 DOI: 10.1021/ma070712a

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📄 Abstract

In this study the morphology of spin-casted films of polymers blended with [6,6]-phenyl C 61 -butyric acid methyl ester (PCBM) has been studied. It was found that the lateral structure formation in the films is favored by rapid solvent evaporation and strong polymer−PCBM repulsion. The formation of homogeneous films is favored by slow evaporation and weak polymer−PCBM repulsion. The effect of solvent evaporation rate is the opposite of what is found for spin-casting polymer−polymer blends. The results can be explained by the kinetics of phase separation and the phase behavior involving limited solubility and crystallization of PCBM.

📄 Abstract

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