Studies On Ti-metal Foil For Photoanode Substrate Of Dye-Sensitized Solar Cell

As the third generation of solar cell, Dye-sensitized solar cell (DSSC) has attracted considerable interest due to Simple production process, low cost, abundant raw materials,environment-friendly.However, the conventional DSSC are manufactured by using conductive glasses as conductive substrates. When we prepared large-scale DSSC, conversion efficiency of large cells was drastically decreased, due to its high internal resistance. In addition, conductive glasses are more expensive, accounting for60%of the entire production costs.The industrial production of DSSC is greatly hindered. As an alternative conductive glass conductive substrates,titanium foil are used in DSSC due to its high electrical conductivity, resistance to corrosion electrolyte and high temperature, light, etc. In this paper, in order to prepare high efficiency and low-cost large-scale DSSC, We have carried out optimization study on various impact factors of the DSSC’s photoelectric performance.First, in order to improve the photoelectric performance.of DSSC, We have produced a number of DSSC with active area of1cm2to examine the influence of these factors on photoelectric performance, including the treatment of the titanium foil, photoanode film sintering temperature, the platinum content of counter electrode, electrolyte concentration, the compression of the photoanode and the photoanode slurry type. Ultimately, a5.69%conversion efficiency in the active area of1cm2was achieved with titanium foil for photoanode substrate and conductive glasses for counter electrode substrate(Ti-FTO).In order to exert the the high conductivity advantage of titanium, we have produced a large number of larger active area DSSCs. Meanwhile, we optimize the performance of electronic collection materials and photoanode film thickness. A5.50%and3.74%conversion efficiency in the active area of16.2cm2and53.0cm2was achieved respectively on the50mm*75mm and100mm*100mm large size DSSC. The results show that the use of titanium foil as the photoanode substrate display distinct advantage when we product large area DSSC. Even when cells are irradiated in the natural light conditions, they show good stability.