The flashcards below were created by user
loveofthesea83
on FreezingBlue Flashcards.
-
What is an electronic device which operates by virtue of the movement of electrons within a solid piece of semi-conductor material?
A solid-state device
-
What term is the way of saying "it's resistance to electrical current flow decreases as temperature increases"?
Negative Temperature Coefficient
-
Name 3 of the largest users of semiconductor devices.
- 1) Commercial products
- 2) Industry
- 3) Military
-
State 1 requirement of an electron tube, which does not exist for semiconductors, that makes the tube less efficient than the semiconductor.
The electron tube requires filaments or heaters
-
Define "matter."
Anything that occupies space and has weight
-
What are the 3 states of matter?
- 1) Solids
- 2) Liquids
- 3) Gasses
-
What is the smallest particle into which an element can be broken down and still retain all its original properties?
The atom
-
What are the 3 particles that comprise an atom?
State the type of charge they hold.
- 1) Electrons--negative charge
- 2) Protons--positive charge
- 3) Neutrons--neutral (no electrical charge)
-
What is the outer shell of an atom called?
Valence shell
-
What term is used to describe the definite discrete amounts of energy required to move an electron from a low shell to a higher shell?
Quanta
-
What is a negative ion?
An atom that has more than its normal amount of electrons.
-
What is the main difference in the energy arrangement between an isolated atom and the atom in a solid?
The atom in a solid has energy levels grouped into energy bands.
-
What determines, in terms of energy bands, whether a substance is a good insulator, semiconductor, or conductor?
- The width of the forbidden band
- (Or the separation between the conduction and valence bands)
-
What determines the chemical activity of an atom?
The number of electrons in its valence shell
-
What is the term used to describe the sharing of valence electrons between two or more atoms?
Covalent bonding
-
Name the two types of current flow in a semiconductor.
- 1) Electron current flow
- 2) Hole flow
-
What is the name given to a piece of pure semiconductor material that has an equal number of electrons and holes?
Intrinsic
|
|