A solar cell is made of two types of semiconductors, called p-type and n-type silicon. The p-type silicon is produced by adding atoms—such as boron or gallium—that have one less electron in their ...

The use of n-type and p-type silicon is a foundation concept in the design of transistors. Pure silicon is not conductive. However, it can be made conductive by adding other elements to its ...

so semiconductors of this type are called negative-type or N-type. In contrast, P-type semiconductors use a dopant element from group III on the periodic table (such as boron, indium, or gallium).

Researchers in Australia have compared the firing resistance of p-type and n-type poly-Si/SiOx passivating contacts and found that the former have better resistance to hydrogen diffusivity and ...