Research Article

Isolation of III-V/Ge Multijunction Solar Cells by Wet Etching

Figure 4

Holes in the III-V layers underneath the intact SiO2 mask.
583867.fig.004a
(a) Top view image showing the holes through the transparent SiO2 mask
583867.fig.004b
(b) Cross-sectional SEM image of a heterostructure containing a hole