Simple Organic Molecules Bearing a 3,4-Ethylenedioxythiophene Linker for Efficient Dye-Sensitized Solar Cells.

3,4-Ethylenedioxythiophene and bis[2-(2-methoxyethoxy)ethoxy]thiophene bridged donor–acceptor molecules for dye-sensitized solar cells have been synthesized, one of which achieved a solar-to-energy conversion efficiency of 7.3%, compared to 7.7% optimized for N719 dye.