PbZr_(0.40)Ti_(0.60)O_3非晶薄膜透射光谱性质研究

INVESTIGATIONS ON THE TRANSMISSION SPECTRA OF PbZr_(0.40)Ti_(0.60)O_3 AMORPHOUS THIN FILMS

采用溶胶凝胶方法在石英玻璃上制备了均匀透明的PbZr0 .40 Ti0 .60 O3 (PZT)非晶薄膜 ,测量了 2 0 0～ 110 0nm的紫外可见近红外透射光谱 .根据经典的包络计算方法 ,同时获得薄膜在透明振荡区的折射率 ,消光系数以及厚度 .薄膜的折射率色散关系可以通过单电子sellmeier振荡模型成功地进行解释 .最后 ,根据Tauc’s法则 ,得到PbZr0 .40 Ti0 .60O3 非晶薄膜的禁带宽度为 3.78eV .

Uniform and transparent PbZr0.40Ti0.60O3 ( PZT) amorphous thin films were deposited on the fused silica substrates using a modified sol-gel processing. The optical properties of PZT amorphous thin films were investigated in the wavelength range of 200 similar to 1100nm. The refractive index, the extinction coefficient and the film thickness were calculated by a classical envelope method. The dispersion of the refractive index is well explained by the single-term Sellmeier relation. The band gap of the PbZr0.40Ti0.60O3 thin films is about 3. 78eV using Tauc's theory.