aluminium
germanium
silicon
cadmium
0.5 - 1 V
1 - 2 V
2 - 3V
4 - 5 V
solar cell
fuel cell
Edison cell
cryogenic storage
0.5 W
1.0 W
5.0 W
10.0 W
series arrangement of solar cells
parallel arrangement of solar cells
series-parallel arrangement of solar cells
none of the above