This question is part of the Super Big Solar Panel FAQ from Solar Mango, where expert answers to over 100 important questions on solar panels are provided.


You would have likely heard about the P-N junction of the solar cell, which is in fact the junction that generates the photovoltaic current.

What is a P-N junction and how does it work to generate electricity?

p-n junction refers to the boundary between two types of semiconductor material. One type is called the p-type and the other is called the n-type. In a typical solar cell, one side of the cell is doped with boron (the p-type), and the other side (n-type) is doped with phosphorus. The p-n junction generates current and voltage due to the “built-in” electric field at the junction of the p-type and n-type material.

Source: P-N Junction from Solar Mango’s Solar Dictionary


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