Fig. 1From: High Weight-Specific Power Density of Thin-Film Amorphous Silicon Solar Cells on Graphene PapersThe fabrication processes of through-pore AAO filter membrane. (a) The as-obtained double side AAO on the Al foil. (b) Spin-coating a PMMA thin film on the one side. (c) Etching off AAO on the back side. (d) Removing the Al foil. (e) Dissolving the barrier layer in the AAO. (f) Removing the PMMA in glacial acetic acid and obtaining through-pore AAO filter membraneBack to article page