The Preparation Of TiO₂Nanometer Crystal And The Application In The DSSC

TiO₂is such a versatile semiconductor material with chemical stability，itsacid and alkali resistant ability is good, and harmless to bodies so that it has beenwidespread concerned. The research of TiO₂nanocrystalline material used in theDSSC （dye-sensitized solar cell） became the hotspot in the recent years. Dye-sensitised Cells are new type of solar cells which have low-production cost,simple manufacturing process, and stable performance, and friendly toenvironment, thus the DSSC will have a wide application.In this paper, the TiO₂sol solution was made with Isopropyl Titanate（C12H28O4Ti） as the precursor and by the hydrothermal method. A series of TiO₂sol solution were made in different acid solution, then the raction mechanism andthe influence factors of particle size were be discussed. The TiO₂nanoparticleswere made to the anode of the DSSC. And then, the one-dimensional TiO₂nanomaterials were made by hydrothermal method, and were used to prepare theanode of DSSC; we test and verify the benefical effect of one-dimensionalnanomaterial on the electronic transmission. And then the effect of the differentcontent of the one-dimensional TiO₂nanomaterials on the DSSC performance isresearshed. The TiO₂nanoparticles and the film electrode were characterized byXRD, SEM and so on. The DSSC were assembly made and its properties weretested at the end.Experiments show that the grain size of TiO₂nanoparticles is35nm, andthey were all in anatase structure. The experiments also show that the acid cancontrol the size of the particles effectively by hydrothermal method. Thephotoelectric conversion efficiency of the DSSC was2.56%. The TiO₂one-dimensional nanomaterials have a big length-diameter ratio, and the TiO₂one-dimensional nanomaterials could improve the DSSC photoelectric performance and the best doping amount is4%.