What are the four layers of a solar cell?
Question:
Answer:
A solar cell can be divided into 4 layers:
1) top electrode - an electrical conductor covering the top semiconductor layer that collects and conducts electrical charges to the external circuit.
2) n-type semiconductor - a partnering semiconductor that absorbs light and produces excess higher energy electrons (negative charges).
3) p-type semiconductor - a partnering semiconductor that absorbs light and produces excess holes (positive charges).
4) bottom electrode - an electrical conductor sitting underneath the semiconductor layer that collects and conducts opposite electrical charges to the external circuit.
For some solar cells, the top electrode has to be conductive as well as transparent to light. Transparent conductive oxide (TCO) such as indium-tin-oxide, aluminum doped zinc oxide or flourine doped tin oxide are therefore widely used.
There are other ways to "dissect" a solar cell.
Hope this is the answer you're looking for.
The 4 layers are:
Glass
N-type layer
Junction
P-type layer
-FZK
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