Physics · Semiconductor Devices
The one-dimensional Poisson equation for the surface space charge region in a semiconductor is given by which of the following expressions?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1∂ 2 ψ ∂x 2 = - q ε s (N D + - N A - + p - n)✓
- 2∂ 2 ψ ∂x 2 = q ε s (N D + + N A - - p - n)
- 3∂ 2 ψ ∂x 2 = - q ε s (N A - - N D + - p - n)
- 4∂ 2 ψ ∂x 2 = q ε s (N A - - N D + + p - n)
Correct answer
∂ 2 ψ ∂x 2 = - q ε s (N D + - N A - + p - n)
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