Synthesis and photovoltaic properties of main chain polymeric metal complexes containing 1,10-phenanthroline metal complexes conjugating alkyl fluorene or alkoxy benzene by C═C bridge for dye-sensitized solar cells.

Four main chain polymeric metal complexes (P1-P4) based on 1,10-phenanthroline metal complexes via the Heck coupling have been synthesized and characterized by Fourier transform infrared spectroscopy, ¹H NMR, UV-Vis absorption, photoluminescence spectroscopy, gel permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, elemental analysis, and cyclic voltammetry. To investigate their photovoltaic properties, the dye-sensitized solar cells based on these polymers dyes are studied, under the illumination of AM 1.5G, 100 mW/cm². The study results show the four polymers exhibit good thermally stable and the solar cells based on them have good device performance, and the maximum power conversion efficiency is up to 0.735% for the solar cells based on P3 with a short-circuit current ( J_sc) of 1.68 mA/cm² and an open-circuit voltage ( V_oc) of 0.62 V. Copyright © 2012 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]