Nyob rau hauv qhov chaw dawb, tus nqi thauj khoom yuav yog Li no tus nqi thauj khoom hauv qhov chaw dawb yog suav tias rau xoom. Tab sis qhov chaw dawb muaj cov hais los yog ions uas tau ionized thaum lub sij hawm conduction.
Cov khoom thauj dawb yog dab tsi?
Cov neeg nqa khoom pub dawb yog hluav taws xob (lossis qhov) uas tau qhia ncaj qha rau hauv kev coj uaband (los yog valence band) los ntawm doping thiab tsis txhawb nqa thermally. Vim li no, electrons (qhov) yuav tsis ua raws li ob lub cab cab los ntawm kev tawm hauv qab qhov (electrons) nyob rau hauv lwm lub band.
Dab tsi yog qhov conductivity hauv qhov chaw dawb?
Kev piav qhia: Raws li cov neeg nqa khoom thauj tsis muaj nyob hauv qhov chaw dawb, qhov kev coj ua yuav qis heev. Rau cov xwm txheej zoo tshaj plaws, kev coj tus kheej tuaj yeem raug coj los ua xoom.
Tus nqi ntawm kev coj ua hauv qhov chaw dawb yog dab tsi?
Cov ntaub ntawv zoo li huab cua thiab lub tshuab nqus tsev (chaw) tsis muaj conductivity. Qee cov ntaub ntawv, xws li tooj liab lossis hlau (los yog hlau feem ntau) muaj cov conductivity siab heev, thiab cov conductivity feem ntau yuav kwv yees li infinite. Qhov no txhais tau tias cov khoom muaj qhov tsis kam ntawm xoom.
Tus nqi thauj khoom hauv cov kua yog dab tsi?
txhua tus neeg nqa khoom pub dawb ntawm cov nqi hluav taws xob hauv cov kua, thiab cov kua, yog li ntawd, ua hluav taws xob. Cov cab kuj muaj ob hom: mobile electrons thiab ions.
