Environmental Engineering Reference
In-Depth Information
Figure 7.12 (a) Structure of a tandemsolar cell
constructed with amorphous layers of Si and
Si
the inherently low electron and hole mobilities
in amorphous silicon and its alloys. (b) A similar
tandem silicon cell including surface texturing
to trap light [94].
Ge alloys [93]. Note that
insulator-type
layers
are present in the structure, in which an
effective electric field is maintained to counter
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