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P-type and N-type Semiconductors
Doping produces N-type (electron majority) and P-type (hole majority) semiconductors. Joining them forms a P-N junction used in diodes and other devices.
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P-type and N-type Semiconductors
N-type has lots of useful free electrons.
P-type has lots of holes that behave like positive charge carriers.
Recommended for Class 10
P-type and N-type Semiconductors
A pure semiconductor can have its electrical properties changed through doping.
Doping produces P-type or N-type semiconductor material.
N-type
N-type material contains extra free electrons supplied through suitable doping.
Its majority carriers are electrons.
Holes still exist, but they are minority carriers.
P-type
P-type material has holes as majority carriers.
Electrons are still present but are minority carriers.
Important Point
The terms P-type and N-type describe the majority charge carriers.
They do not mean that the entire material has a large overall positive or negative charge. The material is generally electrically neutral overall.
Why This Matters
Joining P-type and N-type materials produces a P-N junction, the foundation of semiconductor diodes and many other electronic devices.
P-type and N-type Semiconductors — Advanced
Donor-type doping increases electron concentration, while acceptor-type doping increases hole concentration. Majority/minority carrier behaviour determines junction operation.
Revision Zone
60-Second Revision
Quick cues from this topic — use them for last-minute revision.
N → electrons majority.
P → holes majority.
Both → doped semiconductors.
P + N → junction.
- Definition
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Practice
PQ
Q1. Define P-type.
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Q2. Define N-type.
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Q3. Majority carriers.
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Q4. Minority carriers.
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Q5. What forms when joined?
Exam Practice
EQ
Q1. Explain doping.
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Q2. Describe N-type semiconductor.
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Q3. Describe P-type semiconductor.
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Q4. Explain majority and minority carriers.
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Q5. Explain why PN materials are important.
School-standard facts for Matric and Intermediate. Original explanations — not copied from textbooks.