Metal-free branched alkyl tetrathienoacene (TTAR)-based sensitizers for high-performance dye-sensitized solar cells

Yamuna Ezhumalai, Byunghong Lee, Miao Syuan Fan, Boris Harutyunyan, Kumaresan Prabakaran, Chuan Pei Lee, Sheng Hsiung Chang, Jen Shyang Ni, Sureshraju Vegiraju, Pragya Priyanka, Ya Wen Wu, Chia Wei Liu, Shuehlin Yau, Jiann T. Lin, Chun Guey Wu, Michael J. Bedzyk, Robert P.H. Chang, Ming Chou Chen, Kuo Chuan Ho, Tobin J. Marks