Impure or Extrinsic Semiconductor
Keywords:Semiconductor, ionisation, neighbouring, pentavalent
This article is about impure or extrinsic semiconductor.
The characteristics of semiconductor materials can be changed significantly by adding a small percentage of impurity atoms. This process of addition of impurities is termed as doping and the resulting semiconductor is known as impure or extrinsic semiconductor. There are two types of extrinsic semiconductors: n-type and p-type.
Fundamental principles of electronics—B. Ghosh.