Question

Why are elemental dopants for silicon or germanium usually chosen from grp15 n 13?

Answer 1

According to Octet-rule atoms are stable when there are eight electrons in their valence shell. ... This excess electron is free to move and is responsible for conduction. Hence N-type (Negative Type) extrinsic semiconductor (silicon in this case) is made by doping the semiconductor with pentavalent element.

Answer 2

Answer:

According to Octet-rule atoms are stable when there are eight electrons in their valence shell. ... This excess electron is free to move and is responsible for conduction. Hence N-type (Negative Type) extrinsic semiconductor (silicon in this case) is made by doping the semiconductor with pentavalent element.

Explanation: