Abstract
Conductivity of poly (3-hexylthiophene) (P3HT) films was enhanced by blending P3HT with organic semiconducting molecule dibenzotetrathiafulvalene (DBTTF). Films were fabricated by conventional spin-coating from blended solutions of P3HT and DBTTF. Enhancement of the conductivity was achieved in the films containing 30–80% of DBTTF. In these films, large DBTTF crystalline domains of dendrite shapes were observed in atomic force micrographs. Growth mechanisms of dendritic domains are discussed on the basis of viscosity of blended solutions and degree of oversaturation.
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