which kind of defects are introduced by doping ?

Options

A. Dislocation defect
B. Schottky defect
C. Frenkel defect
D. Electronic defect

Explanation

To determine the kinds of defects introduced by doping in semiconductors, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Doping**: Doping is the process of adding a foreign impurity to a semiconductor to enhance its electrical conductivity. This process creates extrinsic semiconductors.

**Hint**: Remember that doping involves adding impurities to modify properties.

2. **Types of Charge Carriers**: Doping introduces either extra electrons (n-type doping) or creates holes (p-type doping) in the semiconductor. These charge carriers are crucial for conductivity.

**Hint**: Consider how adding impurities affects the balance of electrons and holes in the material.

3. **Defect Types**: There are several types of defects that can occur in solids, including:
- **Dislocation Defects**: Atoms are displaced from their original positions.
- **Schottky Defects**: Vacancies are created in the lattice structure.
- **Frenkel Defects**: An atom is displaced to an interstitial site, creating a vacancy and an interstitial defect.

**Hint**: Recall the definitions of different types of defects in solids.

4. **Exclusion of Certain Defects**:
- Doping does not create **dislocation defects** because the atoms are not moved from their original sites.
- Doping does not create **Schottky defects** since no vacancies are introduced in the lattice.
- Doping does not create **Frenkel defects** as it does not involve the displacement of atoms.

**Hint**: Focus on the nature of the doping process and how it interacts with the lattice structure.

5. **Conclusion**: The only type of defect that is introduced by doping is an **electronic defect**. This defect arises from the presence of additional charge carriers (electrons or holes) due to the doped impurities.

**Hint**: Think about how the introduction of charge carriers relates to the overall conductivity of the semiconductor.

### Final Answer:
The kind of defects introduced by doping are electronic defects, which arise from the creation of extra electrons or holes in the semiconductor.

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