The photoresponse behavior of a MEH-PPV sensitized titanium dioxide photoelectrochemical cell

Bulletin of the Chemical Society of Ethiopia

关键词: Solid-state photoelectrochemical cell;    Nanocrystalline titanium dioxide;    MEH-PPV;    POMOE;    I₃^-/I^- redox couple;   

DOI  :  

来源: DOAJ

【 摘 要 】

A solid-state photoelectrochemical cell based on polymer-sensitized nanocrystalline titanium dioxide (nc-TiO₂) was constructed and studied for its photoresponse behavior. Poly[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) and Poly[oxymethylene-oligo(oxyethylene)] (POMOE), complexed with I₃^-/I^- redox couple were used as a polymer-sensitizer to TiO₂ and as a solid polymer electrolyte, respectively. The device produced a short-circuit current of 0.145 mA/cm2, and an open-circuit voltage of 410 mV under the irradiance of 100 mW/cm². The power conversion efficiency and the fill factor were 0.03 % and 0.5, respectively. The monochromatic induced photon-to-current conversion efficiencies for backside (ITO/nc-TiO₂/MEH-PPV) and for front side (ITO/PEDOT) illuminations were 1.8 % and 1.4 %, respectively.

【 授权许可】

Unknown