Answered: The carrier concentrations (Figure 1)…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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The carrier concentrations (Figure 1) are approximations for the case where the net (n-type or p-type) doping of the semiconductor is very well defined (>> ni ). For generic semiconductor doping, the relations in Figure 2 take effect. Deduce the relations from Figure 2. Please explain each step as I'm having trouble in understanding this subject.

P.S.: I sent this question before and the signals in Nd and Na came out wrong. Please be aware!

71/2
N,- Na
Na- N.
+n?
d
d
2
+
Figure 2 no
2
11/2
N.- Na
N.- Na
d
+
d
Ро
no
+n?
2

Figure 1
no Po = n
n
2
n
no
N. conductor, p-type
Po =
Ро
Extrinsic
Extrinsic semi
Na semiconductor, n-type
a
no = Na
(По >> Ро)
Po Na
(Po >> no)

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