多次水热法制备纳米TiO_2胶体在染料敏化太阳能电池中的应用

Nano-TiO_2 prepared by multiple hydrothermal method used in dye-sensitized solar cell

采用多次水热法制备颗粒大小不同的纳米TiO2胶体,应用于染料敏化太阳能电池,研究了不同水热次数得到的胶体对DSSC光电转化效率的影响。利用XRD、TEM和SEM对TiO2形貌进行表征,用UV-Vis测试TiO2膜对染料的吸附。结果表明,4次水热法制备的TiO2胶体的颗粒大小分布均匀,提高了电子在膜中的传输速率和TiO2薄膜对敏化染料的吸附量,进而提高了DSSC的光电转化效率。4次水热的光电转化效率最高,达到7.39%。

A series of nano-TiO2 colloids with different particle size applied to dye-sensitized films of hydrothermal method with regard to efficiency of photoelectric transformation of DSSC was investigated.XRD,TEM and SEM were used to characterize the shape of TiO2,and UV-Vis was used to test the adsorption of dye on TiO2 film.The results showed that the various particle size of four times hydrothermal method was evenly distributed,the electronic transmission rate and the quantity of dye adsorption was improved.Such resulted in the improvement of the photoelectric conversion efficiencies of DSSC.The production of four times hydrothermal method exhibited the most excellent efficiency,reached 7.39%.