Optical properties of SrTiO3 thin films prepared by metalorganic decomposition

作     者：马建华 孟祥建 孙璟兰 林铁 石富文 褚君浩 

作者机构：NationalLaboratoryforInfraredPhysicsShanghaiInstituteofTechnicalPhysicsChineseAcademyofSciencesShanghai200083China NationalLaboratoryforInfraredPhysicsShanghaiInstituteofTechnicalPhysicsChineseAcademyofSciencesShanghai200083China//StateKeyLaboratoryofCrystalMaterialsShandongUniversityJinan250100China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2005年第14卷第3期

页      面：610-614页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 

基　　金：the National Natural Science Foundation of China(Grant 60221502 and 60223006) Shanghai R& D Foundation for Applied Materials(Grant 0316) 

主　　题：optical properties SrTiO3 thin films metalorganic decomposition 

摘      要：SrTiO3 thin films were deposited on vitreous ilica substractes by metalorganic decomposition (MOD). The films are polycrystalline cubic in structure with the lattice constants of a=0.39nm. their optical constants (refractive index n and extinction coefficient k) were calculated by the envelope method from the transmittance spectra in the wavelength range of 190nm to 1100nm. The refractive induex of the presnet films in found to be higher than that of the other SrTiO3 fims prepared by RF sputtering, sol-gel and chemical vapour deposition. The dispersion of the refractive index in the films follows the single electronic oscillator model with oscillator strength (S0) of 0.88×1014m-2 and oscillator energy (E0) of 6.40eV. The optical band gap of the films was estimated to be 3.68eV.