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Questions and Answers
What is the density of electrons in the semiconductor?
What is the density of electrons in the semiconductor?
- 1 x 10^11 cm-3
- 5 x 10^12 cm-3
- 8 x 10^13 cm-3 (correct)
- 3 x 10^14 cm-3
Which equation is used for calculating the conductivity of the semiconductor?
Which equation is used for calculating the conductivity of the semiconductor?
- σ = nμ_n - pμ_p
- σ = q(nμ_n + pμ_p) (correct)
- σ = nμ_n + pμ_p
- σ = (n + p)μ
What is the mobility of the holes in the semiconductor?
What is the mobility of the holes in the semiconductor?
- 2.3 x 10^4 cm2/V-s
- 200 cm2/V-s
- 100 cm2/V-s (correct)
- 1000 cm2/V-s
How does hole density compare to electron density in this semiconductor?
How does hole density compare to electron density in this semiconductor?
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Which of the following values represents the mobility of electrons?
Which of the following values represents the mobility of electrons?
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Study Notes
Semiconductor Conductivity Calculation
- Semiconductor conductivity is calculated using the densities of both electrons and holes, along with their respective mobilities.
- The provided data includes:
- Electron density: 8 x 1013 cm-3
- Hole density: 5 x 1012 cm-3
- Electron mobility: 2.3 x 104 cm2/V-s
- Hole mobility: 100 cm2/V-s
- The formula for conductivity is not provided in the text.
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