Silicon-Naphthalo/Phthalocyanine-Hybrid Sensitizer for Efficient Red Response in Dye-Sensitized Solar Cells
journal contributionposted on 15.02.2013, 00:00 by Bogyu Lim, George Y. Margulis, Jun-Ho Yum, Eva L. Unger, Brian E. Hardin, Michael Grätzel, Michael D. McGehee, Alan Sellinger
Introduction of a naphthalocyanine moiety to phthalocyanine allows for a gradual red shift of the absorption spectrum in the resulting chromophore. Using silicon as a core atom allows for the introduction of additional siloxane side chains which mitigate dye aggregation. A dye-sensitized solar cell with this hybrid sensitizer exhibits a broad and flat IPCE of 80% between 600 and 750 nm and high photocurrent densities of 19.0 mA/cm2.