Semiconductor Glossary, Developed Semi OneSource.
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With over 2000 terms defined and explained, Semiconductor Glossary is the most complete reference in the field of semiconductors on the market today.












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Term (Index) Definition
recombination  process resulting in annihilation of free charge carriers in semiconductor; reversal of the generation process; typically electron recombining with hole looses energy and moves from the conduction band to valence band.
generation  process of free charge carriers formation in semiconductor; in band-to-band generation electron acquiring energy in excess of energy gap moves from the energy state in the valance band to the energy state in the conduction band leaving free hole in the valance band; formation of electron-hole pair.
Term (Index) Definition
direct recombination  electron in the conduction band releases energy and recombines with hole in the valence band.
indirect recombination  recombination via centers in the forbidden gap
Term (Index) Definition
indirect recombination  recombination via centers in the forbidden gap
recombination  process resulting in annihilation of free charge carriers in semiconductor; reversal of the generation process; typically electron recombining with hole looses energy and moves from the conduction band to valence band.
direct recombination  electron in the conduction band releases energy and recombines with hole in the valence band.
Term (Index) Definition
non-radiative recombination  electron-hole recombination process in recombination of electrons and holes which does not produce photons, but mostly phonons; i.e. not radiation is generated; occurs in semiconductors featuring indirect bandgap.
radiative recombination  electron-hole recombination process in which energy is released in the form of electromagnetic radiation; in the case of band-to-band recombination energy of radiation released corresponds to the bandgap of semiconductor.
recombination  process resulting in annihilation of free charge carriers in semiconductor; reversal of the generation process; typically electron recombining with hole looses energy and moves from the conduction band to valence band.
phonon  a “packet”, or quantum, of energy of lattice vibrational wave, i.e. periodic variation in the lattice spacing moving across the crystal with a speed of sound; e.g. generated during absorption-emission processes in indirect bandgap semiconductors.
photon  a “packet”, or quantum, of electromagnetic energy; flux of photons constitutes electromagnetic radiation; interactions of photon with semiconductor are determined by photon’s energy (hí) and bandgap of semiconductor (Eg); energy of incident radiation is absorbed by semiconductor when hí > Eg; energy of photons emitted by semiconductor device hí = Eg.
Term (Index) Definition
radiative recombination  electron-hole recombination process in which energy is released in the form of electromagnetic radiation; in the case of band-to-band recombination energy of radiation released corresponds to the bandgap of semiconductor.
non-radiative recombination  electron-hole recombination process in recombination of electrons and holes which does not produce photons, but mostly phonons; i.e. not radiation is generated; occurs in semiconductors featuring indirect bandgap.
Term (Index) Definition
recombination center,  an impurity or charged point defect in semiconductor in which a minority carrier is captured and then recombined with subsequently captured majority carrier.
trap,  an impurity or charged point defect in semiconductor in which minority carrier can be trapped (captured)for a period of time and then released (thermally "ejected") into the band from which it originated; this is in contrast to a recombination center in which prior to the release minority carrier is anihilated by recombination with a captured majority carrier.
Term (Index) Definition
recombination current  current resulting from the flow of electron and holes pairs that recombine in the space charge region of the forward biased p-n junction.
generation current  current resulting from the generation of electron-hole pairs in the space charge region of the reverse biased p-n junction.
Term (Index) Definition
recombination lifetime  average time needed for an electron-hole pair to recombine.
generation lifetime  average time needed to generate electron-hole pair
Term (Index) Definition
recombination site  electrically active imperfection (crystal defect and/or contaminant) in the bulk or at the surface of semiconductor which promotes recombination of free charge carriers.
Term (Index) Definition
surface recombination  recombination of free charge carriers in semiconductor via electrically active centers (defects) at its surface.
recombination  process resulting in annihilation of free charge carriers in semiconductor; reversal of the generation process; typically electron recombining with hole looses energy and moves from the conduction band to valence band.
recombination site  electrically active imperfection (crystal defect and/or contaminant) in the bulk or at the surface of semiconductor which promotes recombination of free charge carriers.
Term (Index) Definition
surface recombination velocity  rate of surface recombination; higher in the case of highly defective semiconductor surfaces.
recombination site  electrically active imperfection (crystal defect and/or contaminant) in the bulk or at the surface of semiconductor which promotes recombination of free charge carriers.
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Information in this glossary is provided at the author's discretion. Any liability based on, or related to the contents of this glossary is disclaimed.