Large-scale highly ordered hierarchical structures of conjugated polymer via self-assembly from mixed solvents

We report a facile and robust route to fabrication of large area patterns of poly(3-hexylthiophene) (P3HT) by a controlled evaporative self-assembly (CESA) technique using mixed solvents. The alignment, self-assembly and patterning were achieved simultaneously in one step. Chain orientation via this method compares favorably with that attained by mechanical forces