Physics of Everyday Phenomena
9th Edition
ISBN: 9781259894008
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
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Question
Chapter 21, Problem 20CQ
To determine
Whether a diode be made from material that is doped with just One Type of impurity atom and explain the reason.
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1. The energy of an electron in the valence band of a semiconductor is described
by
E = - Ak?
where the value of A is 10-37 J m2, with E in J and k in m-1. When an electron
is removed from the state k = 10°k, m-1,
calculate:
(a) the effective mass;
(b) the momentum;
(c) and the velocity
of the resultant hole.
3) For a Ge (not Si) p-n junction with Na = 1016cm-3 and Na = 1017cm-3, the peak electric field
in the junction at breakdown is 2 × 105 V/cm. a) Determine the depletion zone width for this peak
electric field. b) Calculate the reverse bias breakdown voltage of the diode. Hint: the built-in potential
is needed to obtain an accurate result. c) What can be done to which doping level to approximately
double the breakdown voltage? Explain.
A b A
16% O 12:47
4G
3G
When the forward bias voltage of a diode is changed form 0.6V to 0.8V, the current changes
form 5 mA to 15 mA. Then its forward bias resistance is
A. 0.02 2
В. 10 0
С. 20 0
D. 0.20 N
A
C
В
CLEAR MY CHOICE
Chapter 21 Solutions
Physics of Everyday Phenomena
Ch. 21 - Prob. 1CQCh. 21 - Prob. 2CQCh. 21 - Prob. 3CQCh. 21 - Prob. 4CQCh. 21 - Prob. 5CQCh. 21 - Prob. 6CQCh. 21 - Prob. 7CQCh. 21 - How do we know that the universe is expanding?...Ch. 21 - Prob. 9CQCh. 21 - Prob. 10CQ
Ch. 21 - Prob. 11CQCh. 21 - Prob. 12CQCh. 21 - Describe two astronomical discoveries that provide...Ch. 21 - Prob. 14CQCh. 21 - Prob. 15CQCh. 21 - Prob. 16CQCh. 21 - Prob. 17CQCh. 21 - Prob. 18CQCh. 21 - Prob. 19CQCh. 21 - Prob. 20CQCh. 21 - Prob. 21CQCh. 21 - Prob. 22CQCh. 21 - Prob. 23CQCh. 21 - Prob. 24CQCh. 21 - Prob. 25CQCh. 21 - Prob. 26CQCh. 21 - Prob. 27CQCh. 21 - Prob. 28CQCh. 21 - The average distance from the sun to Venus is...Ch. 21 - Prob. 2ECh. 21 - The nearest star to our sun is a red dwarf named...
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