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- Dans un semi-conducteur, atome d'une impureté pouvant donner un électron libre. L'introduction des donneurs a pour effet d'augmenter le nombre d'électrons libres dans un semi-conducteur pur et de le transformer en semi-conducteur de type N. Termium - by Fabien Champême
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- Un semi-conducteur type N est un semi-conducteur intrinsèque (ex : silicium Si) dans lequel on a introduit des impuretés de type donneurs (ex : arsenic As). Ces impuretés sont ainsi appelées parce qu'elles donnent un électron à la bande de conduction pour réaliser une liaison avec le cristal semi-conducteur . - Optique pour l'ingénieur
by Fabien Champême - Et parce que les électrons à cinq atomes ont un électron supplémentaire à « donner », il sont appelés atomes donneurs. Les matériaux ainsi formés sont appelés semiconducteurs de type N parce qu'ils contiennent un excès d'électrons négativement chargés. - Encyclopédie en ligne
by Fabien Champême - Related KudoZ question
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- Der Donator ist das Atom, mit dem der Halbleiterwerkstoff für die n-Schicht verunreinigt wird. ELKO - by Andrea Flaßbeck (X)
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- Die Dotierung mit Fremdatomen erhöht die Leitfähigkeit von Halbleiterkristallen. Durch Einbau von fünfwertigen Fremdatomen (Donatoren) erhält man Elektronenüberschussleiter (n-Leiter). - Ledshift
by Andrea Flaßbeck (X) - Man bezeichnet ein solches Atom daher als Donator (lat. „donare“ schenken, geben). - Google Books
by Andrea Flaßbeck (X) - Donatoren bzw. Donatorenatome sind zum Beispiel:
* Phosphor (P) in Form von PH3, PCl3 oder POCl3
* Arsen (As) in Form von AsH3 oder As2O5
* Antimon (Sb) - ELKO
by Andrea Flaßbeck (X) - Related KudoZ question
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- Pridaním malého množstva prímesí do polovodičov sa výrazne menia ich vlastnosti. Pridaním prvku ktorý má viac valenčných elektrónov než pôvodný polovodič - donor - sa zvyšuje pravdepodobnosť, že sa akoby „nadbytočný“ elektrón odtrhne. Podobne pri prímesi s menším počtom valenčných elektrónov - akceptor - sa ľahko vytvorí diera.
Donormi vytvárame polovodič typu N a akceptormi typu P.
Wikipedia - by Michal Zugec
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- Prímesové atómy, ktoré z polovodičovej látky tvoria polovodič typu N, nazývajú sa donory (od slova donor - dárca). Donory teda poskytujú kryštálu voľné elektróny. - Referat
by Michal Zugec - Related KudoZ question
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- A material that is intentionally added to a pure semiconductor material in order to increase the population of free electrons in that semiconductor, resulting in a net negative charge. A semiconductor that has had donor material added to it is called "n-type." Tyco Electronics Corporation
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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 - 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 - 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
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- Примесни атоми, които лесно отдават електрони се наричат донори. Лекция - by Ivan Klyunchev
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- Антимон (Sb), арсен (As), фосфор (Р)-използват се като петвалентни донори. - Wikipedia
by Ivan Klyunchev - Полупроводници, в които проводимостта се определя от получените от донорите свободни електрони, се наричат полупроводници с електронна (n–тип) проводимост. - Лекция
by Ivan Klyunchev - При примесните полупроводници донорите и акцепторите са преди всичко от следните групи на периодичната система:
a) донори -III; акцептори-V; б) донори -V; акцептори-III;
- Изпитна тема
by Ivan Klyunchev - Related KudoZ question
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