Organic Semiconductors for Sprayable Solar Cells: Improving Stability and Efficiency

摘要

This report details the final status of the development of materials and techniques for the fabrication of solar cells by spray-paintings. Highlights of the research accomplishments include a demonstration of solar cells with reasonable performance from both spray painted polymer and small-molecule systems, as well as the exploration of several new classes of viable acceptors for organic photovoltaics (three manuscripts are in preparation on this work). We also developed a new acceptor (DC-Pn) that yields cells with improved stability over fullerene-based acceptors, with reasonable device performance. Further modifications of molecule and processing conditions should yield performance comparable to that seen with fullerene-based acceptors. To improve electrode / organic interlaces, we have concurrently developed an approach using Au nanoparticles to improve the conductivity of the conducting polymer anode used in spray-painted solar cells (manuscript in preparation).