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

Figure 2

Simplified microfabrication process of isolated multijunction solar cells.

(a) III-V/Ge bare wafer

(b) Isolation trenches etched in the III-V/Ge layers defining the solar cell mesa

(c) Completed solar cells on mesas

(d) Singulated solar cells