Abstract: 8-hydroxylquinline cadmium(Cdq2)thin films were prepared on glass substrate using vacuum coating technology at different substrate temperatures.The surface and structure were investigated using atomic force microscopy(AFM)and X-ray diffusion(XRD),respectively.The results show that Cdq2 thin film is polycrystalline in structure,and higher substrate temperature results in better morphology,larger grain size,and better structure order.The spectroscopic ellipsometry results show that the refractive index and extinction index decrease with increasing wavelength,and the value of the refractive index and extinction coefficient increase as the substrate temperature increases.

Key words: 8-hydroxylquinline cadmium, thin film, refractive index, extinction index