Study On The Photoelectric Properties Of WO₃/MoO₃ Composite Films

Nowadays,with the development of technology,materials with photoelectric properties have become a research hotspot.And Photoelectric material have been rapidly developed and applied in many fields such sensors,smart beds,sewage degradation,semiconductors,solar cells,etc.The performance of Photoelectric material can be judged from the aspects of electrochromic reversibility,response time,coloring efficiency,spectral transmittance,photocurrent and photocatalysis.In order to prepare semiconductor film materials with good photoelectric properties,the research object of this paper are WO₃ nanoblock film,MoO₃nanofilm and WO₃/MoO₃ composite film.The research content is as follows:The WO₃ nanoblock film was prepared by hydrothermal method on conductive glass?FTO?.The WO₃ nanoblocks were characterized by X-ray diffraction and scanning electron microscopy.Electrochemicaltest,spectroscopytest,photocurrenttestand photoelectrocatalytic test method were used to obtain electrochromic reversibility,response time,coloring efficiency,spectral transmittance,photocurrent and photoelectrocatalysis of WO₃ nanoblock film.It is analyzed in detail.Effect of different PH values of hydrothermal solution on photoelectric properties of WO₃ nanoblock films,it was found that WO₃nanoblock films with a pH of 1.5 have the best electrochromic reversibility,response time,coloring efficiency,spectral transmittance,Photocurrent and Photocatalysis.MoO₃ nanofilms were prepared by electrochemical deposition on conductive glass?FTO?.The MoO₃ film was characterized by X-ray diffraction and scanning electron microscopy.Electrochemicaltest,spectroscopytest,photocurrenttestand photoelectrocatalytic test method were used to obtain the electrochromic reversibility,response time,coloring efficiency,spectral transmittance,photocurrent and photoelectrocatalysis of MoO₃ film.The photoelectric properties of MoO₃ films with different deposition cycles were studied,it was found that the MoO₃ films for 8 cycles had the best electrochromic reversibility,response time,coloring efficiency,spectral transmittance,photocurrent and photocatalytic properties.The WO₃ nanoblock film was prepared by hydrothermal method on conductive glass?FTO?,and then the MoO₃ film was coated on WO₃ nanoblock by electrodeposition to obtain the WO₃/MoO₃ composite film.The WO₃/MoO₃ composite film was characterized by X-ray diffraction,scanning electron microscopy.Electrochemical test,spectroscopy test,photocurrent test and photoelectrocatalytic test method were used to obtain the electrochromic reversibility,response time,coloring efficiency,spectral transmittance,photocurrent and photoelectrocatalysis of WO₃/MoO₃ composite films.The effects of MoO₃in different deposition cycles on the electrochromic reversibility,response time,coloring efficiency,spectral transmittance,photocurrent and photocatalysis of WO3/MoO3 composite films were investigated.Result have shown that the optical properties of WO₃/MoO₃composite films for 8 deposition cycles of MoO₃ are the best.And,the WO₃/MoO₃ films have better electrochromic reversibility,response time,coloring efficiency,spectral transmittance,photocurrent and photoelectrocatalysis compared with WO3 nanoblock and MoO₃ film?...