Question

Which way the conductivity of semiconductors is improved ?

• A. By heating the semiconductor
• B. By cooling the semiconductor
• C. By removing or adding certain donor or acceptor atoms to the crystalline structure.
• D. By simply adding a metal to the crystalline structure.

Answer 1

The correct option is C By removing or adding certain donor or acceptor atoms to the crystalline structure.

Semiconductors ability to conduct electricity is greatly improved by removing or adding certain donor or acceptor atoms to the crystalline structure thereby, producing more free electrons than holes or vice versa. That is by adding a small percentage of another element also known as an impurity to the base material, either silicon or germanium.