CBSE 2022 · Region 3 · Set 1 · Q1 · 2 marks
What is meant by doping of an intrinsic semiconductor ? Name the two types of atoms used for doping of $\displaystyle \mathrm{Ge} / \mathrm{Si}$.
Marking-scheme solution
Doping is the process of adding some external impurity atoms in an intrinsic semiconductor to increase its conductivity.
Dopant atoms may be pentavalent or trivalent.
Semiconductor Electronics: Materials, Devices and Simple CircuitsExtrinsic SemiconductorRemembervery_short_answereasy
Practice Semiconductor Electronics: Materials, Devices and Simple Circuits →All Semiconductor Electronics: Materials, Devices and Simple Circuits questions
More from Semiconductor Electronics: Materials, Devices and Simple Circuits
- With the help of a circuit diagram, explain the working of a p-n junction diode as a full-wave rectifier.…2022 · asked 6×
- Write two points of difference between intrinsic and extrinsic semiconductors.2026 · asked 4×
- State the working principle of an LED. Write any two important advantages and two disadvantages of LED.2022 · asked 3×
- What are majority and minority charge carriers in an extrinsic semiconductor? A p-n junction is forward…2025 · asked 3×
- A pure Si crystal having 5 × 10^28 atoms m^-3 is dopped with 1 ppm concentration of antimony. If the…2024 · asked 3×
- With the help of circuit diagrams, briefly explain the forward biasing and the reverse biasing of a p-n…2026 · asked 3×
- In an intrinsic semiconductor, carrier's concentration is 5 × 10^8 m^-3. On doping with impurity atoms, the…2025 · asked 3×
- Assertion: A hole is an apparent free particle with effective positive electronic charge. Reason ( R ): A…2025 · asked 3×
CBSE Class 12 Physics past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.