| 초록 |
Dye-sensitized solar cells (DSSCs) have been under intensive investigation academically and in the industry section due to their high energy conversion efficiency of over 12% and simple fabrication processes. DSSCs consist of dye molecules adsorbed on nano crystalline TiO2 photo-electrode (PE) layers, liquid electrolytes containing a dissolved I−/I3− redox couple, and platinum (Pt) counter electrode (CE) layers. CE should have high conductivity, catalytic activity, and stability for reduction in redox species. High temperature (above 400 ℃) thermal reduction of the Pt precursor (H2PtCl6 in 2-propanol) is used as the representative CE of DSSCs. However, to achieve flexible DSSCs, the thermally reduced Pt counter electrode (CE) should be replaced by low temperature process and material, because most flexible plastic substrates cannot bear at high temperature up to 400 ℃. Hence it is strongly required to develop a process that can reduce the annealing temperature. Here we examined the feasibility of the conducting polymer-metal nanoparticle nanocomposite as a CE for DSSCs. |
