Semiconductor Physics Vocabulary
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Vocabulary flashcards based on lecture notes about semiconductors.
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24 Terms
Forbidden Energy Gap
The energy range in a solid material where no electron states can exist.
Valence Band
The highest range of electron energies in a solid where electrons are normally present at absolute zero temperature.
Conduction Band
The range of electron energies, higher than the valence band, sufficient to free electrons so they can move freely through the solid.
Intrinsic Semiconductor
A pure semiconductor without any significant dopant species present.
Fermi Level
The highest energy level that an electron can occupy at absolute zero (0 K).
Donor Level
An energy level within the forbidden gap, just below the conduction band, created by donor impurities.
Acceptor Level
An energy level within the forbidden gap, just above the valence band, created by acceptor impurities.
N-type Semiconductor
A semiconductor doped with pentavalent impurities, resulting in a higher concentration of free electrons.
P-type Semiconductor
A semiconductor doped with trivalent impurities, resulting in a higher concentration of holes.
Electron-Hole Pair
The simultaneous creation of a conduction electron and a hole.
Depletion Region
A region in a PN junction diode devoid of mobile charge carriers.
Potential Barrier
An electric potential difference across the depletion region of a PN junction that opposes the flow of charge carriers.
Forbidden Energy Gap
The energy range in a solid material where no electron states can exist.
Valence Band
The highest range of electron energies in a solid where electrons are normally present at absolute zero temperature.
Conduction Band
The range of electron energies, higher than the valence band, sufficient to free electrons so they can move freely through the solid.
Intrinsic Semiconductor
A pure semiconductor without any significant dopant species present.
Fermi Level
The highest energy level that an electron can occupy at absolute zero (0 K).
Donor Level
An energy level within the forbidden gap, just below the conduction band, created by donor impurities.
Acceptor Level
An energy level within the forbidden gap, just above the valence band, created by acceptor impurities.
N-type Semiconductor
A semiconductor doped with pentavalent impurities, resulting in a higher concentration of free electrons.
P-type Semiconductor
A semiconductor doped with trivalent impurities, resulting in a higher concentration of holes.
Electron-Hole Pair
The simultaneous creation of a conduction electron and a hole.
Depletion Region
A region in a PN junction diode devoid of mobile charge carriers.
An electric potential