Fig. 4From: Incorporation of Nanostructured Carbon Composite Materials into Counter Electrodes for Highly Efficient Dye-Sensitized Solar CellsTop- and cross-sectional views of various carbon materials, including CNP, MWCNT, GF, MWCNT/GF, CNP/GF, CNP/MWCNT, CNP/MWCNT/GF stacked on the surface of FTO glass using screen-printing process (the scale bars in the top view images are 0.5 μm, and the scale bars in the cross-sectional view images are 5 μm)Back to article page