Fabrication Of Vanadium Dioxide Inverse Opal Photonic Crystal By Electrodeposition

Vanadium dioxide (VO₂) inverse opal photonic crystal has adjustable photonic band gap (PBG) in visible light and infrared wave band. It has important foreground at optical switch. In the thesis, the fabrication of VO₂ inverse opal photonic crystal by electrodeposition was systemic researched. Some probing research has been done on the electronic and optical performance of VO₂ inverse opal photonic crystal.Firstly, the fabrication of polystyrene (PS) colloidal crystal was researched. The thesis have researched the influence of baseplate's surface, environmental temperature and concentration of PS spheres on the assembly orderliness and obtained PS colloidal crystals with high quality.The thesis have compared these ways of precursor, electrophoresis and electrodeposition. The way of electrodeposition was choosed to filled V₂O₅ into the interstices of PS colloidal crystal. The thesis has systemic researched the technics of electrodepositting V₂O₅. The influence factors to electrodepositing V₂O₅ were mostly the proportion of ethanol to deionized water, concentration of VO²⁺, pH, surfactant, temperature, current and whisk. The thesis have researched these influence factors and obtained good technics of eiectrodepositting V₂O₅.VO₂ was obtained by vacuum annealing V₂O₅. The influence of the vacuum, anneal temperature and anneal time on vanadium's chemic value have been researched. The thesis have obtained good technics of vacuum anneal, and analysed the causation of NaV₆O₁₃ appearing.V₂O₅ was filled into interstices of PS colloidal crystal by electrodeposition. VO₂ inverse opal photonic crystal was obtained after removing the PS colloidal crystal and vacuum annealing the sample. The thesis researched the microcosmic modality of V₂O₅ (VO₂) inverse opal photonic crystal by scanning electron microscopy. Finally, the thesis have done some probing research on the the electronic and optical performance of VO₂ inverse opal photonic crystal. The temperature-resistance of curve of VO₂ inverse opal was researched. The photonic band gap (PBG) of VO₂ inverse opal was analysed by plane wave expansion method.