초록 |
A protective layer that can be applied on a flat flexible transparent conductive film was prepared by combining silica sol and organic polymer. The organic polymer used was poly(4-styrenesulfonic acid) (PSSA), the silica precursor can form a sol and can cause chemical condensation with the silica sol under thermal conditions., a small amount of conductive polymer, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), was added to the protective layer to make the overcoating layer itself conductive, thereby enabling electrical conduction to the underlying conductive film. The network structure of the overcoating layer surface could block oxygen and moisture. Therefore, under high-temperature and high-humidity conditions for 500 h, the sheet resistance increased by 145% before overcoating but increased by 33% after the overcoating layer was formed with appropriate thickness. In addition, the bonding strength of the surface was further improved. |