CHAPTER 1 INTRODUCTION TO SEMICONDUCTORS

CHAPTER 1
INTRODUCTION TO SEMICONDUCTORS

1. The forces between the opposite charges form an
Electric field

2. What is the least accurate approximation of a diode that can be represented by a simple switch?
The Ideal diode model

3. The best conductors are the _________ element materials
Single
4. Occurs when a conduction-band electron loses energy and falls back into a hole in the valence band
Recombination

5. Refers to the fact that the region near the pn junction is depleted of charge carriers due to diffusion across the junction.
Depletion

6. The condition that essentially prevents current through the diode
Reverse bias

7. The absence of an electron in the valence band of an atom
Hole

8. The removal or addition of an electron from or to a neutral atom so that the resulting atom has a net positive or negative charge.
Ionization

9. The resistance of a forward-biased diode is called the
Dynamic or ac resistance

10. One that has no impurities
Intrinsic crystal

11. Most good insulators are ________ rather than the single-element materials
Compounds

12. To increase the number of conduction-band electrons in intrinsic silicon, ___________ impurity atoms are added.
Pentavalent

13. To increase the number of holes in intrinsic silicon, __________ impurity atoms are needed.
Trivalent

14. A ___________ material consists of silicon atom and trivalent impurity atoms such as boron
p-type

15. A silicon material that consists of silicon atoms and pentavalent impurity atoms such as antimony.
N- type

16. What is the value of the reverse current of practical diode model?
0

17. Semiconductor atoms bond together in a symmetrical pattern to form a solid material called ___________.
crystal