YANG Shenghong, ZHANG Yueli. Influence of Annealing Temperature on Structural and Optical Properties of Ce0.97Co0.03O2 Thin Films Prepared by Sol-Gel Method[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2014,53(3):146-149.
YANG Shenghong, ZHANG Yueli. Influence of Annealing Temperature on Structural and Optical Properties of Ce0.97Co0.03O2 Thin Films Prepared by Sol-Gel Method[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2014,53(3):146-149.DOI:
thin films were prepared on Si(100) by SolGel method. The influence of annealing temperature on the structural and optical properties of Ce
0.97
Co
0.03
O
2
thin films was studied. X-ray diffraction (XRD) showed that 3%Co doped CeO
2
thin films were polycryatalline with the same structure of CeO
2.
The average crystallite size increased with increasing annealing temperature. Spectroscopic ellipsometry (SE) studies showed that the optical constants (the refractive index n and the extinction coefficient k) of Ce
0.97
Co
0.03
O
2
thin films increase with increasing annealing temperature
and the optical band gap Eg decrease as increasing annealing temperature. The variation in optical properties with annealing temperature revealed that the film structure was affected by annealing.