Video: Dab tsi yog conduction band nyob rau hauv semiconductor?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib daim duab qhia qhov valence thiab conduction bands ntawm insulators, hlau, thiab semiconductors . Cov conduction band yog cov band ntawm electron orbitals uas electrons tuaj yeem dhia mus rau hauv valence band thaum zoo siab. Thaum cov electrons nyob hauv cov orbitals, lawv muaj lub zog txaus txav mus los ntawm cov khoom siv.
Thiab cov lus nug yog, dab tsi yog valence band thiab conduction band hauv semiconductor?
Valence band yog qhov ntau nyob rau hauv lub zog graph qhov twg tag nrho cov valence electrons nyob; hos, conduction band yog qhov ntau ntawm lub zog muaj los ntawm tag nrho cov dawb electrons . Qhov sib txawv ntawm cov bands yog hu ua forbidden energy gap.
Ib sab saum toj, dab tsi yog bands hauv semiconductor? Hauv semiconductors thiab insulators, electrons raug kaw rau ib tug xov tooj ntawm bands ntawm lub zog, thiab txwv tsis pub los ntawm lwm cheeb tsam. Lub sij hawm " band gap" yog hais txog lub zog sib txawv ntawm sab saum toj ntawm lub valence band thiab hauv qab ntawm qhov conduction band . Cov hluav taws xob muaj peev xwm dhia ntawm ib qho band rau lwm tus.
Hais txog qhov no, koj txhais li cas los ntawm conduction band?
Cov conduction band yog cov band ntawm orbitals uas yog siab zog thiab yog feem ntau khoob. Nyob rau hauv reference rau conductivity nyob rau hauv semiconductors, nws yog band uas txais cov electrons los ntawm lub valence band . Cov conduction band tuaj yeem pom hauv daim duab hauv qab no.
Dab tsi yog qhov txawv ntawm conduction band thiab valence band?
Valence thiab Kev coj ua band yog ob tug txawv lub zog theem sib cais los ntawm ib tug npaum li cas ntawm lub zog. Lub ntsiab qhov sib txawv ntawm tus valence band thiab conduction band yog tias valence band qhia txog qib zog ntawm electrons tam sim no hauv valence lub plhaub ntawm lub atomic qauv.
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