The difference between p-type and n-type crystalline solar cells

The raw material that precedes the the pulling and cutting of silicon wafers is the same for both p and n-type cells. This raw silicon feedstock is “grown” into ingots (Czochralski process) or cast as bricks and then thinly sliced. These wafers form the basis of a solar cell. It is at this point that p and n-type cells diverge. To create a semiconductor junction that will induce current flow the wafers are doped (coated) with either boron (p-type) or phosphorus (n-type).
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