The transmittance of TiO2 films decreases, the average crystalline size of TiO2 films increase and the absorption edge wavelength of TiO2 films becomes larger with increasing cycle times and film thickness.

• 随着镀膜次数或薄膜厚度的增加，薄膜中TiO2纳米微晶的平均晶粒大小逐渐增大，TiO2薄膜的透光率略有减小，其吸收阈值发生了明显的红移.