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Multifunctional Conjugated Polymers with Main-Chain Donors and Side-Chain Acceptors for Dye Sensitized Solar Cells (DSSCs) and Organic Photovoltaic Cells (OPVs)
A novel multifunctional conjugated polymer (RCP‐1) composed of an electron‐donating backbone (carbazole) and an electron‐accepting side chain (cyanoacetic acid) connected through conjugated vinylene and terthiophene has been synthesized and tested as a photosensitizer in two major molecule‐based solar cells, namely dye sensitized solar cells (DSSCs) and organic photovoltaic cells (OPVs). Promising initial results on overall power conversion efficiencies of 4.11% and 1.04% are obtained from the basic structure of DSSCs and OPVs based on RCP‐1, respectively. The well‐defined donor (D)‐acceptor (A) structure of RCP‐1 has made it possible, for the first time, to reach over 4% of power conversion efficiency in DSSCs with an organic polymer sensitizer and good operation stability.
A new multifunctional conjugated polymer (RCP‐1) with a side chain acceptor demonstrates high performance in both dye sensitized solar cells (DSSCs) and organic photovoltaic cells (OPVs). The power conversion efficiency can reach over 4% in DSSCs with the polymeric dye due to the unique structure of RCP‐1. Meanwhile, a moderate efficiency of 1.04% is also achieved in BHJ OPVs based on RCP‐1 and [6,6]‐phenyl‐C71‐butyric acid methyl ester (PC71BM).