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- The thermally induced current that exists in a photodiode in the absence of incident optical power. Tyco Electronics Corporation - by Enrique Cavalitto
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- If there is a higher concentration of donors than acceptors, the semiconductor is n-type and the free electron concentration is approximately the difference between the two doping concentrations. - everything2.com by Enrique Cavalitto
- The ionization energy of a donor atom is the energy required to dissociate the electron from the atom and put it in the conduction band of the crystal. - answers.com by Enrique Cavalitto
- The doping with foreign atoms increases the conductivity of semiconductor crystals. By installing pentavalent foreign atoms (donors) one receives electron excess conductors (n-conductor). - ledshift.com by Enrique Cavalitto
Compare [close] - Swedish
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- Den termiskt inducerade ström som genereras i en fotodiod utan den träffas av något ljus. Own research - by Peter Berntsen (X)
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- Detta görs för att minska ner mörkerströmmen, dvs den utsignal som erhålls när
detektorn inte träffas av ljus. Mörkerströmmen beror på att den termiska rörelsen i
katodmaterialet kan orsaka emission av elektroner. - KTH by Peter Berntsen (X)
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Compare [close] - German
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- Bezeichnung für den (Rest-)Strom bei fotoelektrischen Strahlungsempfängern, der bei vollständiger Dunkelheit (Beleuchtungsstärke: 0 Lux) fließt.
Der Begriff D. wurde zunächst für Fotowiderstände geprägt. Bei Fotodioden und Fototransistoren bezeichnet der D. den Dioden-sperrstrom bzw. den Kollektor-Emitter-Strom, wenn keine Strahlung auf die Basis trifft. Die Größe des D. bestimmt die Empfindlichkeit des Strahlungsempfängers, d. h. die kleinste als Informationssignal zugelassene Strahlung.
techniklexikon - by Susanne Bittner
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- Bezeichnung für den (Rest-)Strom bei fotoelektrischen Strahlungsempfängern, der bei vollständiger Dunkelheit (Beleuchtungsstärke: 0 Lux) fließt.
Der Begriff D. wurde zunächst für Fotowiderstände geprägt. Bei Fotodioden und Fototransistoren bezeichnet der D. den Dioden-sperrstrom bzw. den Kollektor-Emitter-Strom, wenn keine Strahlung auf die Basis trifft. Die Größe des D. bestimmt die Empfindlichkeit des Strahlungsempfängers, d. h. die kleinste als Informationssignal zugelassene Strahlung.
- Techniklexikon by Susanne Bittner
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Compare [close] - Italian
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- Corrente di natura termica in un fotodiodo in assenza di illuminazione. Nozioni elementari di fotometria - by Roberto Crivello
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- La piccola corrente che attraversa il fotodiodo in assenza di illuminazione.
Diventa importante solo quando si usa il diodo in polarizzazione inversa - Nozioni elementari di fotometria by Roberto Crivello
- In assenza di luce, la corrente di buio di un fotodiodo corrisponde alla corrente di saturazione inversa dovuta ai portatori minoritari generati termicamente. - Manuale di elettronica e telecomunicazio by Roberto Crivello
- Poiché il dispositivo fotorivelatore è polarizzato inversamente, anche in completa assenza di potenza ottica incidente, nel circuito esterno scorre una piccola corrente di conduzione inversa Id, detta corrente di buio (Dark Current), di cui si deve tenere conto in fase di progetto di rivelatori per segnali ottici con fotorivelatori a semiconduttore - Rivelatori di segnali ottici by Roberto Crivello
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