Quasi-ordered P3HT nanopillar-nanocap structures with controlled size

A fast and cost-effective technique is applied for fabricating an innovative nanostructure based on Poly(3-hexylthiophene). Such nanostructure consists of nanopillar arrays on a substrate of hexagonally quasi-ordered nanocap arrays of the same polymer. In this fabrication process, hybrid nanoporous anodic alumina fabricated by applying an asymmetric anodization process is used as template. The resulting nanostructure is replicated from the template via spin-coating and melt-assisted wetting methods. In addition, such nanostructure can be fabricated with a large quantity of structural configurations and materials. As a result of this versatility, it would be possible to use this nanostructure for fabricating a new kind of ordered bulk-heterojunction solar cells with enhanced efficiency.