Video: Dab tsi yog cov cab kuj feem ntau hauv ap hom semiconductor?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv p- hom semiconductor , muaj ntau lub qhov nyob. Yog li ntawd, qhov yog cov feem ntau nqi cov cab kuj hauv p- hom semiconductor . Cov qhov ( feem ntau nqi cov cab kuj ) nqa feem ntau ntawm cov nqi hluav taws xob lossis hluav taws xob tam sim no hauv p- hom semiconductor.
Ib yam li ntawd ib tug yuav nug, hom ntawm cov cab kuj muaj nyob rau hauv ap hom semiconductor?
Cov them cov cab kuj uas yog tam sim no nyob rau hauv loj yog hu ua feem ntau them cov cab kuj . Hauv ib p - hom semiconductor , feem ntau them cov cab kuj yog cov qhov hos nyob rau hauv n- hom semiconductor , feem ntau them cov cab kuj yog cov dawb electrons.
Ib tug kuj nug, koj txhais li cas los ntawm feem coob thiab cov neeg nqa khoom tsawg? Feem coob thiab Minority Carriers . Hauv n-hom semiconductor, cov electrons yog tus cov neeg nqa khoom feem ntau hos, lub qhov yog tus haiv neeg tsawg . Qhov no txhais tau hais tias cov electron muab los ntawm Pentavalent impurity ntxiv thiab ib feem ntawm electron-qhov khub.
Tom qab ntawd, cov neeg nqa khoom feem ntau yog dab tsi hauv electronics?
npe. lub koom haum muaj lub luag haujlwm rau nqa qhov loj dua ntawm cov tam sim no hauv ib lub semiconductor. Nyob rau hauv n-hom semiconductors cov neeg nqa khoom feem ntau yog electrons; nyob rau hauv p-hom semiconductors lawv yog qhov zoo them qhov. Sib piv haiv neeg tsawg.
Dab tsi yog feem ntau thiab tsawg tus nqi thauj khoom hauv pn kev sib tshuam?
A p-n sib txuas diode yog tsim los ntawm p hom thiab n hom semiconductors. Hauv p sab qhov yog nyob rau hauv feem ntau , yog li ntawd lawv yog cov feem ntau them cov cab kuj thiab dawb electrons yog cov minority cov cab kuj . Nyob rau hauv n sab dawb electrons nyob rau hauv feem ntau , cov yog cov feem ntau them cov cab kuj thiab qhov yog cov minority them nqa.
Pom zoo:
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