Yog Silicon Carbide Electrically Conductive

YogSilicon CarbideHluav taws xob conductive?

Silicon carbide yog cov khoom siv semiconductor uas muaj cov khoom siv hluav taws xob tshwj xeeb. Nws muaj hluav taws xob conductivity siab heev uas yog piv rau cov hlau. Txawm li cas los xij, nws cov hluav taws xob conductivity yog qhov kub thiab txias. Thaum qhov kub tsis tshua muaj, silicon carbide nthuav tawm cov hluav taws xob tsis tshua muaj hluav taws xob, thaum kub kub, nws cov conductivity nce ntau.

Feem ntau, silicon carbide yog suav tias yog ib qho zoo heev insulator vim nws muaj ib tug dav bandgap. Bandgap yog hais txog qhov sib txawv ntawm lub zog sib txawv ntawm valence band thiab conduction band ntawm semiconductor. Qhov dav ntawm bandgap, qhov zoo dua lub semiconductor yog ib qho insulator.

Txawm li cas los xij, qee yam ntawm silicon carbide, xws li n-hom silicon carbide, muaj cov khoom siv hluav taws xob siab vim muaj cov hluav taws xob dawb hauv cov khoom. N-hom silicon carbide yog doped nrog impurities xws li nitrogen los yog phosphorus, uas qhia dawb electrons rau hauv cov khoom.

Cov electrons dawb no ua rau cov hluav taws xob conductivity ntawm lubsilicon carbidethiab ua kom haum rau siv hauv cov khoom siv hluav taws xob.

Ntawm qhov tod tes, p-hom silicon carbide yog doped nrog impurities xws li boron, uas qhia qhov rau hauv cov khoom. Lub qhov yog qhov tsis muaj electrons, thiab lawv ua rau kom muaj zog ntawm silicon carbide. Yog li, p-hom silicon carbide feem ntau muaj hluav taws xob qis thiab siv los ua cov khoom siv semiconductor.

Zuag qhia tag nrho, silicon carbide tuaj yeem ua hluav taws xob hauv qee yam xwm txheej. Txawm li cas los xij, nws cov hluav taws xob conductivity yog nyob ntawm seb hom silicon carbide thiab qhov kub ntawm qhov uas nws tau siv.

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