Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN: 9781337671729
Author: SERWAY
Publisher: Cengage
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Chapter 42, Problem 19P
(a)
To determine
The typical speed of
(b)
To determine
Compare the typical drift speed of the electrons in wire of
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In an N-type semiconductor at T = 300 K, the electron concentration varies linearly from 2 x 10^18 to 5 X 10^17 per cc over a distance of 1.5 mm and the diffusion current density is 360 A/cm^2. Find the mobility of electrons.
. Mobility of electrons in a semiconductor is defined as the
ratio of their drift velocity to the applied electric field. If for
an n-type semiconductor, the density of electrons is 10¹⁹ m-³
and their mobility is 1.6 m² (V-s), then the resistivity of the
semiconductor
2
semiconductor (since, it is an n-type
contribution of holes is ignored) is close to
a) If the electron concentration increase along the x-axis of a conductor as shown in equation below:
n=3-1030x2+2- 102x+1026
And D=1.2 x 10-4 m/s. Find the diffusion current at x =Smm?
b) Find the minimum electron concentration nmin in semiconductor?
Chapter 42 Solutions
Physics for Scientists and Engineers with Modern Physics
Ch. 42.1 - For each of the following atoms or molecules,...Ch. 42.2 - Prob. 42.2QQCh. 42.2 - Prob. 42.3QQCh. 42 - Prob. 1PCh. 42 - Prob. 2PCh. 42 - Prob. 3PCh. 42 - Prob. 4PCh. 42 - Prob. 5PCh. 42 - The photon frequency that would be absorbed by the...Ch. 42 - Prob. 8P
Ch. 42 - Prob. 9PCh. 42 - Prob. 10PCh. 42 - (a) In an HCl molecule, take the Cl atom to be the...Ch. 42 - Prob. 12PCh. 42 - Prob. 13PCh. 42 - Prob. 14PCh. 42 - Prob. 15PCh. 42 - Prob. 16PCh. 42 - Prob. 17PCh. 42 - Prob. 19PCh. 42 - Prob. 21PCh. 42 - Prob. 22PCh. 42 - Prob. 23PCh. 42 - Prob. 24PCh. 42 - Prob. 25PCh. 42 - Prob. 26PCh. 42 - Prob. 27PCh. 42 - Prob. 28PCh. 42 - Prob. 29PCh. 42 - Prob. 30PCh. 42 - Prob. 32PCh. 42 - Prob. 33PCh. 42 - Prob. 35PCh. 42 - Prob. 36APCh. 42 - Prob. 37APCh. 42 - Prob. 39APCh. 42 - Prob. 40APCh. 42 - As an alternative to Equation 42.1, another useful...
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