Preparation and properties of stretchable silver nanowire transparent conductive film
Transparent and stretchable conductive film was prepared by spin-coating and transfer method with silver nanowires ( AgNWs) as conductive materials and polydimethylsiloxane ( PDMS) film as substrate. AgNWs were first uniformly spin coated on the surface of polyethylene terephthalate (PET) film,and transferred onto the surface of a semi dry polydimethylsiloxane (PDMS) film,which was then heat treated to obtain the stretchable and transparent conductive film. The concentration and content of AgNWs and spin coating times were studied to understand their effect on the conductivity,transmittance,stretchability,and stability of the AgNWs/PDMS film. The conductivity and transmittance of the AgNWs/PDMS film decrease as the concentration and amount of AgNWs increase. As the diameter of the AgNWs decreases,the transmittance increases,while the conductivity decreases. By spin-coating 4-layer of 0. 2 mL of 2 mg/mL AgNWs (diameter 60 nm,length 25-30 μm),the AgNWs/PDMS film has a transmittance of 72. 5％ at 550 nm and a sheet resistance of 32. 94 Ω/□. Meanwhile,AgNWs/PDMS film exhibits excellent flexibility,bending stability,stretchability,and electrical stability.
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