Fig. 5From: Silicon Nanowire Heterojunction Solar Cells with an Al2O3 Passivation Film Fabricated by Atomic Layer Depositiona I–V characteristics of a SiNW solar cell with Al2O3 removed using an etching paste. b High-magnification top view of the SEM image of SiNWs with Al2O3 after using an etching paste. c Low-magnification top view of the SEM image of SiNWs with Al2O3 after using an etching pasteBack to article page