Q. Doping of As with Si is called __.
Solution:
- As is a member of group V and has 5 electrons in its outermost shell.
- When Si is doped with group V elements such as As then, Si forms four bonds with As and one extra electron is left free for conduction.
- Since the conduction is due to the presence of free electrons, therefore, it is known as n-type semiconductor.
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