MHT CET20225 Aug 2022Morning ShiftPhysicsSemiconductorsActual
In a p-type semiconductor,
Options
- Aholes are majority carriers and trivalent atoms are dopants.
- Belectrons are minority carriers and pentavalent atoms are dopants.
- Celectrons are majority carries and pentavalent atoms are dopants.
- Dholes are minority carriers and trivalent atoms are dopants.
Correct answer
A. holes are majority carriers and trivalent atoms are dopants.
Step-by-step solution
The correct option is (A) Concept-Based Question: Option A is true because trivalent atoms are used to dope tetravalent semiconductor materials such as Si or Ge. Doping with impurity in a minor amount generates the majority of carriers (as roughly one impurity atom generates one hole!).