2) The following 'plot' shows the carrier densities in a PN junction at room temperature. N side of the junction is in the figure. Notice log scale! a) Calculate doping density and the intrinsic density. Do n side short or long? b) Determine bias type (forward or reversed), what is the voltage applied if p-side is grounded. c) Plot quasi Fermi levels as function x starting xn indicate what happens in x₁. Show where maximum quasi Fermi level splitting occur? Can you estimate diffusion length from the figure, if yes what is it? 1016 10¹4 10¹2 100 0 X n(x) N-side p(x)

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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2) The following 'plot' shows the carrier densities in a PN
junction at room temperature. N side of the junction is in
the figure. Notice log scale!
a) Calculate doping density and the intrinsic density. Do
n side short or long?
c)
b) Determine bias type (forward or reversed), what is
the voltage applied if p-side is grounded.
Plot quasi Fermi levels as function x starting X,
indicate what happens in x₁. Show where maximum
quasi Fermi level splitting occur? Can you estimate
diffusion length from the figure, if yes what is it?
1016
10¹4
10¹2
100
0
X₂
m
n(x)
N-side
p(x)
.X₁
Transcribed Image Text:2) The following 'plot' shows the carrier densities in a PN junction at room temperature. N side of the junction is in the figure. Notice log scale! a) Calculate doping density and the intrinsic density. Do n side short or long? c) b) Determine bias type (forward or reversed), what is the voltage applied if p-side is grounded. Plot quasi Fermi levels as function x starting X, indicate what happens in x₁. Show where maximum quasi Fermi level splitting occur? Can you estimate diffusion length from the figure, if yes what is it? 1016 10¹4 10¹2 100 0 X₂ m n(x) N-side p(x) .X₁
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