Dssc Light Anode Preparation And Performance Study

With the rapid development of the global economy, the human demand for energy increasing, the development of new energy sources is essential. Solar energy as a clean and inexhaustible energy received extensive attention, while the dye-sensitized nanocrystalline solar cells (DSSC) because of its simple fabrication process, low cost, stable performance, light and easy to carry, and the production process does not pollute the environment,it has a good prospect.In this paper,starting from the dye-sensitized solar cell structure of the light anode,from the perspective of interfacial charge transfer,reveals the efficiency about the structure of the light anode to energy conversion of DSSC,Use metalloscope,VM-E video microscope and other analytical tools characterized the microstructure of the films.also investigated the surface morphology, thickness of the TiO₂ thin films and other factors on the optical properties of DSSC, identified the optimum preparation process of light anode and various components of DSSC manufacturing conditions,optimized the packaging process of DSSC, and tested the optical properties of DSSC after packaged the solar cell.Use P25 powder, by the method of coating making a layer of TiO₂ film, annealed at 450℃for 30 minutes, then soaked in dye and prepared TiO₂ light anode,finally,obtained the DSSC, tested the largest open circuit voltage and short circuit current are 641.37 mV and 3.55 mA separately, and photovoltaic conversion efficiency is 1.57 %. After the surface modification which use 40mmol//L TiCl₄ solution, the largest open circuit voltage and short circuit current are 670.73 mV and 5.83 mA separately, and photovoltaic conversion efficiency is 2.69 %. At the same time, scratch two layers of TiO₂ films, after modification of the same concentration of TiCl₄ solution, tested the largest open circuit voltage and short circuit current are 633.28 mV and 5.88 mA separately, and photovoltaic conversion efficiency is 2.58 %. The results show that, TiO₂ thin film was modificated by TiCl₄ solution,the short circuit current and photovoltaic conversion efficiency have been significantly improved.