In a semiconductor, current conduction is due______
Right Answer is:
Holes and free electrons
In a semiconductor, current conduction is due to holes and free electrons.
⇒ Current is the movement of charge carriers, such as free electrons, holes, and ions.
⇒ Electron current is the result of free electrons that are directed to move from one atom to another along a conductive path.
⇒ Because electrons have a negative charge, they are repelled by areas of negative polarity and are attracted to areas of positive polarity.
⇒ In semiconductors, as an electron jumps from one atom to another, it leaves behind a positively charged hole.
⇒ This positively charged hole attracts another negatively charged electron.
⇒ In essence, the two charge carriers switch positions with electrons moving in one direction (from negative to positive) and positively charged holes moving in the opposite direction (from positive to negative).
⇒ Both holes and electrons contribute to current conduction in semiconductors.
⇒ In p-type materials, holes outnumber free electrons, and they make up the majority of carriers. The majority of carriers in N-type are free electrons.
⇒ So, we conclude that, in a semiconductor, current conduction is due to both holes and electrons.