Study On Characteristics For Dye-sensitized Solar Cells

Dye-sensitized solar cell (DSSC) has a good application prospective with low cost, simple preparation procedure, high photoelectric conversion efficiency. In order to obtain rechargeable batteries and then adapt to the needs of future development, scientists have been doing correlational research.The nano-semiconductor porous membrane are tested by SEM, XRD and UV-vis spectra.Through assembling DSSC, and then tested by electrochemical workstation, and relevant analysis is discussed.During the screen-printing process, the best solid content of TiO₂ is studied in the terpilenol system. Research shows that the content of 20% TiO₂ has a good photoelectric performance, Another experiment study on additive of TiO₂ paste, the results show that the emulsifier of OP-10 could increase 30.9% of short-circuit current,. Meanwhile, the alpha-naphthol can increase 6.8% of open-circuit voltage. Besides,we use the method of power-coating to prepare TiO₂ film with the low temperature preparation, and find that the order of heating has a great influence to the photoelectric conversion efficiency of DSSC, the correct order is that, first, coating the TiO₂ film on the conductive basement, then, heating the TiO₂ film with 450℃, the conversion efficiency could been improved .We prepare SnO2 powers by sol-gel method, and then assemble the DSSC with different electrolyte. The results show that Organic configuration electrolyte which is assembled DSSC conversion efficiency is better than water state. Otherwise, coating a layer of lithium titanate on the TiO₂ film, We find that composite film could increase 18.9% of the open-circuit voltage, the conversion efficiency increase 28.6%.Based on new PEOT-Pt and polyaniline-Pt counter-electrodes for DSSCs are investigated to research the energy storage. The results show that the DSSC with PEOT-Pt counter-electrodes could storage 0.092mC/cm². Although the capacity is small, it will make DSSC for energy-storage materials in the future.