17 Questions
What is the classification of a material whose conductivity lies between that of conductors and insulators?
Semiconductor
What type of compound semiconductor can be formed by combining an element from group III and an element from group V?
Binary compound
What is the main advantage of compound semiconductor materials over elemental semiconductor materials?
All of the above
What is the fraction of the element's atomic concentration in a ternary compound semiconductor, Alx Ga1-x As?
0 ≤ x ≤ 1
Which of the following elements can be used to form an elemental semiconductor material?
Si and Ge
What happens to valence electrons at temperatures greater than 0 K?
They gain enough thermal energy to break the covalent bond and jump to the conduction band
What is the term for the +ve charge empty state created in the valence band when a valence electron jumps to the conduction band?
Hole
What is the characteristic of an intrinsic semiconductor?
It has no impurity atoms
What is the relationship between the number of electrons in the conduction band and the number of holes in the valence band in an intrinsic semiconductor?
The number of electrons equals the number of holes
What is the unit of the coefficient B in the intrinsic carrier concentration equation?
cm^3 K^3/2
What is the symbol for the intrinsic carrier concentration in an intrinsic semiconductor?
ni
What is the number of quantum states in the valence band and conduction band in a semiconductor?
4N
What is the difference between the lower energy of the conduction band and the upper energy of the valence band called?
Eg
What is the state of the 4N states in the valence band at 0 K?
Completely filled
What type of bonding does Si form with another 4 Si atoms?
Covalent bond
In an isolated Si atom, how many electrons are tightly bound to the nucleus?
10
What is the result of the interaction of electrons in the n = 2 shell when atoms get closer?
Energy level splits
Test your knowledge on semiconductor materials, including their conductivity, types, and properties. This quiz covers the basics of semiconductor materials, ideal for students of electronic physics. Assess your understanding of this fundamental concept in electronics.
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