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Chuanjiang Qin, Youhei Numata, Shufang Zhang, Ashraful Islam, Xudong Yang, Keitaro Sodeyama, Yoshitaka Tateyama and Liyuan Han A Near-Infrared cis-Configured Squaraine Co-Sensitizer for High-Efficiency Dye-Sensitized Solar Cells Advanced Functional Materials 23

Version of Record online: 28 FEB 2013 | DOI: 10.1002/adfm.201203384

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The absorption maximum of a cis-configured squaraine dye (HSQ1) is red-shifted to 686 nm using a simple molecular design strategy. Dye-sensitized solar cells (DSCs) co-sensitized with HSQ1 and N3 (a Ru bipyridyl complex) show an energy-conversion efficiency of 8.14%. HSQ1 is the first squaraine dye to possess such a broad incident photon-to-current conversion efficiency (IPCE) response spectrum and high conversion efficiency at long wavelengths.

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