Study On Photoelectric Properties Of WO₃/Metal Composite Films

With the rapid development of technology,Semiconductor materials have been widely used in some fields,such as smart windows,displays,solar cells,sewage degradation etc.The quality of the photoelectric properties of semiconductor materials can be measured in terms of electrochromic and photoelectric catalysis.In order to prepare semiconductor film materials with good photoelectric properties,the research object of this paper are WO₃ nanoblock films,WO₃/Ag composite films and WO₃/Cu composite films.The research contents are as follows:?1?The WO₃ nanoblock films was prepared by hydrothermal method on conductive glass?FTO?.Characterization of WO₃ nanoblocks was conducted by scanning electron microscopy and X-ray diffraction,The electrochromic reversibility,switching time,coloration efficiency,spectral transmittance of the WO₃ nanoblocks were obtained by electrochromic test.Photocurrent and photoelectric catalysis degradation efficiency of the WO₃ nanoblocks were obtained by photocurrent and photoelectric catalysis test.And analyze it in detail.The effects of hydrothermal duration on the photoelectric properties of WO₃ nanoblock films were studied.The results show that the WO₃ nanoblock films hydrothermally grown for 4 hours with the best electrochromic performance,photocurrent performance and photoelectric catalysis performance.?2?Different amounts of Ag nanoparticles?20s,50s,80s?were loaded onto the WO₃ nanoblock films with the best photoelectric properties?hydrothermal time 4h?by a electrodeposition method to generate WO₃/Ag composite films.Characterization of WO₃/Ag composite films was conducted by scanning electron microscopy,X-ray diffraction,energy spectrum and X-Map map.The electrochromic reversibility,switching time,coloration efficiency,spectral transmittance of the WO₃/Ag composite films were obtained by electrochromic test.Photocurrent and photoelectric catalysis degradation efficiency of the WO₃/Ag composite films were obtained by photocurrent and photoelectric catalysis test.And analyze it in detail.The effect of different Ag content on the photoelectric properties of WO₃/Ag composite films were studied,and compared with single WO₃ nanoblock films.The results show that the WO₃/Ag composite film samples obtained by depositing for Ag nanoparticles at 50s has the best electrochromic performance,photocurrent performance and photoelectric catalysis performance.?3?Different amounts of Cu nanoparticles?20s,50s,80s?were loaded onto the WO₃ nanoblock films with the best photoelectric properties?hydrothermal time 4h?by a electrodeposition method to generate WO₃/Cu composite films.Characterization of WO₃/Cu composite films was conducted by scanning electron microscopy,X-ray diffraction and energy spectrum.The electrochromic reversibility,switching time,coloration efficiency,spectral transmittance of the WO₃/Cu composite films were obtained by electrochromic test.Photocurrent and photoelectric catalysis degradation efficiency of the WO₃/Cu composite films were obtained by photocurrent and photoelectric catalysis test.And analyze it in detail.The effect of different Cu content on the photoelectric properties of WO₃/Cu composite films were studied,and compared with single WO₃ nanoblock films.The results show that the WO₃/Cu composite film samples obtained by depositing for Cu nanoparticles at 50s has the best electrochromic performance,photocurrent performance and photoelectric catalysis performance.