Which of the following statements is correct?

Options

A. Silicon doped with boron is an n-type semiconductor
B. Silicon doped with arsenic is a p-type semiconductor
C. Metals are good conductors of electricity
D. Electrical conductivity of semiconductors decreases with increasing temperature

Explanation

To determine which statement is correct, let's analyze the statements one by one based on the information provided in the video transcript.

### Step-by-Step Solution:

1. **Understanding Semiconductor Doping:**
- Semiconductors can be classified into two types based on doping: p-type and n-type.
- P-type semiconductors are formed when a group 13 element (like Boron) is doped into a group 14 element (like Silicon). This is because Boron has 3 valence electrons, which creates "holes" in the silicon lattice.
- N-type semiconductors are formed when a group 15 element (like Arsenic) is doped into a group 14 element. Group 15 elements have 5 valence electrons, providing extra electrons to the silicon lattice.
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