中文摘要：

采用电子束蒸发法制备铈掺杂的TiO2薄膜，研究掺杂铈TiO2薄膜的透过率，以及掺杂对TiO2薄膜光吸收性能的影响。实验发现掺杂CeO2使氧化钛薄膜的禁带宽度Eg从3．27eV减小到2．51eV，从而使光学吸收边从380nm红移到495nm，大大提高了对太阳光或可见光的利用能力。

英文摘要：

Nano-TiO2 thin film is successfully prepared with electron beam evaporation. Then doped TiO2 film is researched such as transmitce and absorp value reducing from 3.27 eV to 2. 5 eV, way, more solar energy is utilized. tion of light et al. The results indicate that doping CeO2 make band gap resulting in the absorption edge shifting from 380 nm to 495 nm. In this way, more solar energy is utilized.