真空蒸发沉积VOPc薄膜及磁场对薄膜结构与性能的影响  

Influence of Magnetic Field on Vacuum Deposited Vanadyl Phthalocyanine Films

作　　者：季振国[1] 向因[1] 王龙成[1] 芮祥新[1] 上田裕清 

机构地区：[1]浙江大学硅材料国家重点实验室 [2]日本神户大学工学部

出　　处：《真空科学与技术》2003年第4期275-277,281,共4页Vacuum Science and Technology

基　　金：国家自然科学基金No.50 2 730 33;中日合作项目 (C0 50 )

摘　　要：用真空蒸发制备了酞菁氧钒 (VOPc)薄膜 ,并在磁场中进行了热处理。用X光电子能谱、X射线衍射、紫外 可见吸收光谱、原子力显微镜等手段对制备的薄膜进行了表征。结果表明沉积的酞菁氧钒薄膜为α 型 ,成分接近酞菁氧钒的分子式。制备的薄膜在磁场中进行了热处理 ,发现磁场使酞菁氧钒薄膜性质发生改变 :UV VIS吸收谱Q带发生红移 ;XRD谱图衍射峰强度明显增强 ,峰位略有变化 ;原子力显微镜 (AFM)分析发现晶粒大小无明显变化。Vanadyl phthalocyanine(VOPc) films grown by vacuum deposition,were first annealed in strong external magnetic field to modify their molecular structures.Then,the films were characterized with X ray photoelectron spectroscopy(XPS),X ray diffraction(XRD),ultraviolet visible light absorption spectroscopy,and atomic force microscopy(AFM).The results show that the film is α type with a stoichiometry similar to VOPc.After annealing in strong magnetic fields considerable changes in its properties were found,including:a red shift in UV visible absorption,enhancement in diffraction intensity and slight peak position shifts.But no noticeable variations in grain sizes was observed.We suggest that the magnetic field may result in a certain preference orientation of VOPc molecules during annealing.

关 键 词：酞菁氧钒 磁场 定向排列 

分 类 号：O434.13[机械工程—光学工程] O484.41[理学—光学]