Qauv Ntawm Ib Leeg Crystal Silicon Wafer

Thaum molten elemental silicon solidifies, silicon atoms yog teem rau hauv peb-dimensional ntev-ntev txiav txim nyob rau hauv lub pob zeb diamond lattice los ua ib tug siv lead ua silicon. Ib leeg siv lead ua silicon muaj lub cev muaj zog ntawm metalloid, thiab muaj zog conductivity. Nws cov conductivity nce nrog qhov nce ntawm qhov kub thiab txias, thiab nws muaj qhov tseem ceeb semiconductivity. Ultrapure ib leeg siv lead ua silicon yog ib qho khoom siv hauv nruab nrab. Doping ib qho me me ntawm pawg IIIA cov ntsiab lus, xws li boron, nyob rau hauv ultra-ntshiab ib leeg siv lead ua silicon tuaj yeem ua rau nws cov hluav taws xob conductivity thiab tsim p-hom silicon semiconductor; Yog tias doping ib qho me me ntawm pawg VA ntsiab lus, xws li phosphorus lossis arsenic, tuaj yeem ua rau cov hluav taws xob ua tau zoo. Ib hom n-hom silicon semiconductor yog tsim. Cov txheej txheem ntawm kev ua ib leeg siv lead ua silicon feem ntau yog los ua polycrystalline silicon los yog amorphous silicon ua ntej, thiab tom qab ntawd siv Czochralski txoj kev los yog ncua kev kawm ntawv cheeb tsam melting txoj kev loj hlob qws-zoo li tus tib siv lead ua silicon los ntawm yaj. Monocrystalline silicon feem ntau yog siv los ua cov khoom siv semiconductor. Silicon crystalline silicon yog xiav tsaus, nkig heev, thiab yog ib yam khoom siv semiconductor. Cov khoom siv tshuaj muaj zog heev. Nyob rau hauv chav tsev kub, nws yog ib qho nyuaj rau react nrog lwm yam tshuaj tshwj tsis yog hydrogen fluoride.