12 Questions
What distinguishes semiconductor compounds from metals and insulators?
Energy band gap (Eg)
Which type of compound semiconductors are commonly used in light-emitting diodes (LEDs)?
III-V compounds like GaN, GaP, and GaAs
What determines the wavelengths of light that can be absorbed or emitted by a semiconductor compound?
Energy band gap (Eg)
What is the lattice structure called when both fcc sites in a diamond lattice have the same type of atoms?
Diamond structure
Which compound semiconductors are usually used in television screens as fluorescent materials?
II-VI compounds like ZnS
What is the lattice structure called when each fcc site in the diamond lattice has different types of atom?
Zincblend structure
What is required to obtain highly pure semiconductor for electronic applications like Si?
High temperature arc furnace
What kind of compounds can be obtained by varying the mixture of elements on each fcc site of the zinc blend structure?
Ternary compounds
What type of lattice has an additional atom at the center of the cube?
Body-centered cubic lattice
For which crystal structure is there an atom located at each corner of the unit cell?
Simple cubic structure (sc)
Which crystal system allows lattice points at the face center?
Cubic
What are Miller indices used to refer to in crystal studying?
Plane and direction in crystals
This quiz covers semiconductor materials, including the types of semiconductors (elemental and compound) and their applications. It also discusses where semiconductors occur in the periodic table and provides examples of binary, ternary, and quaternary compound semiconductors.
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