Abstract
Transparent electromagnetic interference (EMI) shielding materials are highly in demand for liquid crystal display, communication devices and observation windows. In this study, two polyethylene terephthalate (PET) substrates, one printed with a silver-grid and the other coated with silver nanowires and reduced graphene oxide (AgNWs/rGO), were prepared separately and hot-pressed together face-to-face to fabricate hybrid films composed of sliver-grid/(AgNWs/rGO). The rGO nanosheets act as bridges between silver nanowires and vice-versa which can facilitate fast transfer of electrons. The effects of grid-line spacing on the transparency and EMI shielding have been studied. It is found that the EMI shielding increases with decreasing the grid-lines spacing, however, resulting in decrease of the transparency. The silver-grid/(silver nanowires and reduced graphene oxide) sample with 1.0 mm grid-line spacing demonstrates highest EMI shielding of 42.94 dB along with a low sheet resistance of 1.60 Ω/sq and a high transparency of 74.40%.
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