Feem ntau ntawm cov cab kuj nyob rau hauv N-hom yog dawb electrons. Yog li, peb xaus lus tias, nyob rau hauv ib tug semiconductor, tam sim no conduction yog vim ob qhov thiab electrons.
Dab tsi ua rau kev coj ua hauv semiconductor?
Qhov ua rau hluav taws xob conduction hauv cov khoom siv hluav taws xob yog vim kev txav ntawm lub qhov hauv lub valence band thiab txav ntawm cov electrons hauv cov conduction band.
Dab tsi yog conduction tam sim no hauv semiconductor?
Nyob rau hauv chav tsev kub, ib lub semiconductor muaj txaus cov hluav taws xob dawbtso cai rau nws ua tam sim no. … Thaum ib qho hluav taws xob tau txais lub zog txaus los koom nrog hauv kev coj ua (yog "dawb"), nws nyob ntawm lub zog siab. Thaum cov electron raug khi, thiab yog li tsis tuaj yeem koom nrog hauv kev coj ua, lub tshuab hluav taws xob nyob hauv lub xeev qis zog.
Puas yog lub luag haujlwm ntawm cov dej ntws tam sim no hauv semiconductor?
Cov tam sim no uas yuav ntws hauv ib qho khoom siv hluav taws xob muaj xws li ob qho tib si electron thiab qhov tam sim no. Ntawd yog, cov khoom siv hluav taws xob uas tau tso tawm los ntawm lawv txoj haujlwm lattice mus rau hauv cov khoom siv hluav taws xob tuaj yeem txav mus los ntawm cov khoom siv.
Cov electrons twg yog lub luag haujlwm rau tam sim no hauv silicon?
Electron tam sim no nyob rau hauv lub cev silicon yog tsim los ntawm txav ntawm thermally generated dawb electrons. Lwm hom tam sim no tshwm sim hauv valence band, qhov twg cov qhov tsim los ntawm cov hluav taws xob dawb muaj nyob.
