It is commonly accepted that in order to develop high-performance organic and/or hybrid organic-inotganic solar energy devices, it is necessary to use, among other components, fill active donor-acceptor layer with highly ordered nanoscale morphology In,in idealized morphology, the effectiveness of internal process including exciton generation and seperation and charge carrier migration is optimized, leading to all efficient conversion of photons to electricity. With this idea in mind, we have rationally designed and developed,in ordered nanoscale morphology consisting of self-assembled poly(3-hexylthiophene) donor domains of molecular dimension, each of them separated by fullerene C-60 hydroxide acceptor domains. A poly(3-hexylthiol)hene)-block-poly(L-lactide) block copolymer was used as a structure directing agent to pattern active material into ordered nanostructures Using this intimate morphological control. one can begin to probe structure-property relationships with unprecedented detail with the ultimate goal of maximizing the performance of future organic/hybrid photovoltaic devices.