Controlling Morphology in Polymer–Fullerene Mixtures


  • We would like to acknowledge the Alexander von Humboldt foundation for the post-doctoral grant of A.M. We would also like the thank German Ministry of Science and Education (BMBF) for funding EKOS project (O3N2023D) and the ministry of Science and Innovation of Northrhine-Westfalia (Elena-project). We thank Tanja Tegeder for taking the SEM image. Supporting Information is available online from Wiley InterScience or from the authors.


original image

Methods to determine the agglomerated–amorphous ratio of P3HT in P3HT:PCBM solar cell mixtures, and control the degree of agglomeration–crystallinity of P3HT in the final device using a solvent mixing method and no further heat-treatment or preparation of the polymer are presented. As-cast devices have an efficiency of ∼4%.