Fundamentals of Semiconductors

Material that posses greater conductivity than insulators but less than that of conductors

• Diode

• Semiconductor

• Conductor

• Superconductor

Which among these is NOT the property of a semiconductor?

• Four electrons in the valence band forming covalent bonds

• At 0 Kelvin semiconductor acts like an insulator

• Semiconductors have two type of charge carriers

• Semiconductors are temperature insensitive

The following properties for Trivalent impurities hold good EXCEPT

• Three valence electrons

• Produces a p type semiconductor

• Electrons become the charge carriers

Which among these is the fundamental characteristic of a p type semiconductor

• Electrons are the majority charge carriers

• Has a tendency to gain an electron

• Has a tendency to donate an electron

• Easy to conduct electricity

The process of adding an impurity to an intrinsic semiconductor

• Ionization

• Reconstruction

• Doping

• Atomic Modification

The most common semiconductor used for producing IC's

• Quartz

• Silicon

• Antimony

• Germanium

Method implemented to increase conductivity is

• Increase electrical field

• Increase temperature

• Increase doping concentration

• Shining light of proper wavelength on the semiconductor

• All of the above

Valence electrons occupy

• the orbit closest to the nucleus

• The orbit farthest from the nucleus

• in various orbits around the nucleus

The current in semiconductors is due to

• Electrons

• Holes

• Ions

• Both electrons and holes

Which among these is NOT a semiconductor

• Germanium

• Silicon

• Gallium Arsenide

• Titanium