Solid state dye sensitized solar cells applying conducting organic polymers as hole conductors

Solid-state dye sensitized solar cells (SSDSCs) applying mesoporous TiO2 electrodes sensitized with Ru complex dye Z907 and conducting organic polymers as the hole transport material (HTM) are prepared. We employ the in-situ photo-electrochemically polymerization technique (PEP)[1–3] in order to obtain, in a single step, the conducting organic polymer on the TiO2/Dye electrode. We developed a modification of reported method[2] which allows the polymer poly(3,4-ethylenedioxythiophene) (PEDOT) by different electrochemical techniques applying constant-voltage and constant-current methods. Polymer morphology and its influence on solar cell performance were studied. Overall conversion efficiency above 2% (AM 1.5, 100 mW cm−2) was obtained.