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Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
book

Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition

by John G. Webster, Halit Eren
February 2014
Intermediate to advanced content levelIntermediate to advanced
1921 pages
82h 13m
English
CRC Press
Content preview from Measurement, Instrumentation, and Sensors Handbook, Second Edition, 2nd Edition
46-6 Optical
and the solutions are
ψ
ψ ψ
ε
ψ
= + < <
=
< <
=
V E x d d x
q N x x
x t
q N x
G ox
D n
s
A
( )
( )
( )
(
max
0
2
0
2
−−
< < +
t x
t x t x
p
s
p
)
( )
2
2
ε
(4
6
.6)
w
here
E
ox
is the electric eld in the oxide layer
V
G
is the gate bias voltage
x
n
is the position of the potential maximum
Figure
46.1 sh
ows
a ty
pical
po
tential
pr
ole
ac
ross
th
e
MO
S
ca
pacitor
in a bu
ried-channel
CC
D
. No
te
th
e
p
resence
o
f
a p
otential
m
aximum,
ψ
max
, where the electrons will reside. It is given by
ψ ψ
max
= +
J
A
D
1
N
N
(46.7)
where
ψ ε
J A p S
/
=
q N x
2
2( )
.
Si
nce
x
p
increases linearly with N
D
, the potential maximum ψ
max
and hence the charge storage capa-
bility
al
so
in
crease
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Publisher Resources

ISBN: 9781439848913