Infiltrating Semiconducting Polymers into Self-Assembled Mesoporous Titania Films for Photovoltaic Applications

Authors


  • We acknowledge the Camille and Henry Dreyfus Foundation, the Petroleum Research Fund and the U.S. National Science Foundation (DMR-96-34396 and NSF CHE 0098240) for support of this research. This work was also partially supported by the NSF-MRSEC program through the Center on Polymer Interfaces and Macromolecular Assemblies (CPIMA) under DMR 9808677. We thank Dr. Ekaterina Kadnikova for making GPC measurements and Ann Marshall for HR SEM assistance.

Abstract

Interpenetrating networks of organic and inorganic semiconductors are attractive for photovoltaic cells because electron transfer between the two semiconductors splits excitons. In this paper we show that films of titania with a uniform distribution of pore sizes can be made using a block copolymer as a structure-directing agent, and that 33 % of the total volume of the film can be filled with a semiconducting polymer.

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