Peb txhua tus paub txog silicon. Txawm li cas los xij, cov silicon siv nyob rau hauv chip tsim yog qee zaum ib -} Crystal silicon thiab qee zaum polycrystalline silicon. Cov kev ua tau zoo ntawm polycrystalline thiab tib - siv lead ua silicon txawv. Yog li, lawv cov txiaj ntsig zoo li cas? Lawv daim ntawv thov yog dab tsi? Thiab lawv tau ua li cas?
Dab tsi yog cov siv lead ua?
Dab tsi yog cov siv lead ua?
Ib lub crystal yog cov khoom siv hauv uas atoms, lossis molecules tau teem rau hauv ib qho qauv ib txwm muaj raws li ib qho kev ua ntu zus, sib sau ua ib qho kev ntsuas duab geometric.
Cov ntaub ntawv crystalline xws li:
Nws yog xim hlau muaju: xws li hlau, tooj liab, kub, thiab nyiaj.
Ionic muaju: NACL, CUSO4, thiab lwm yam.
Dielectric muaju: silicon oxide, silicon nitride, thiab lwm yam, uas tuaj yeem yog crystalline lossis amorphoud.
Qeb muaj muaju: xws li silicon thiab Germanium.
Dab tsi yog tib lub crystal silicon thiab polycrystalline silicon?
Ib qho kev siv lead ua ib qho uas cov atoms, ions, lossis molecules tau teem los ntawm ib kawg rau lwm tus, tswj kev taw qhia tib yam. Tag nrho cov siv lead ua tsuas muaj ib qho kev qhia ua ke ua ke thiab tsis muaj ciam teb nplej.
Ib polycrystal yog hais txog cov khoom muaj xws li ntau cov nplej me me (ib qho muaju nkaus xwb), txhua tus nrog nws tus kheej cov cim crystal. Cov nplej no tau pom zoo li pom zoo ntawm macroscopic nplai, tab sis kev cob qhia nyob rau hauv txhua lub noob yog zoo ib yam.
Ib leeg -} crystal silicon muaj tsuas yog ib qho kev qhia ua siv leitration xwb, feem ntau<100>, <110>, lossis<111>Cov. Cov kev tsim cov tshuab ua kom sib txawv muaj cov txiaj ntsig sib txawv ntawm cov txheej txheem xws li semiconductor kev tsim khoom, thiab ion kev qhia kom tsim nyog rau kev ua kom zoo nti nti.
Kev sib piv ntawm cov khoom ntawm monocrystalline silicon thiab polycrystalline silicon
Cov Hluav Taws Xob Hluav Taws Xob: Polycrystalline silicon muaj cov hluav taws xob hluav taws xob ntau dua piv rau Moncrystalline Cov Chaw Nres Tsheb Tsim Kho ntawm Polycrystalline cov ciaj ciam av. Monocrystalline silicon, txawm li cas los xij, muaj ntau dua eltrolity vim nws tsis muaj ciam teb qoob loo thiab cov qauv txuas ntxiv.
Zog: Monocrystalline silicon resembles daim iav tom qab polishing. Qhov no yog vim tias thaum lub teeb ntaus monocrystalline silicon, nws muaj kev cuam tshuam lub teeb nyob rau tib yam thiab kev taw qhia. Nyob rau hauv sib piv, thaum lub teeb tawm polycrystalline silicon, txhua Crystal nplej muaj kev pom sib txawv, ua rau muaj ntsej muag ci.
Cov ntawv thov ntawm monocrystalline thiab polycrystalline silicon hauv chips?
Monocrystalline Silicon
1. Monocrystalline Silicon Wafers, siv raws li substrates
2. Qee cov khoom lag luam chip xav tau daim monocrystalline Silicon Txheej
1. Hauv Mosfets, Polycrystalline silicon feem ntau yog siv los ua cov khoom siv rooj vag. Ua ke nrog cov Silicon oxide insulating txheej, polycrystalline silicon yog qhov tseem ceeb tivthaiv uas tswj hwm cov ntws ntawm cov transist.
2. Nws tuaj yeem siv rau hauv cov hlwb solar thiab ua kua crystal qhia.
3. Raws li ib txheej fij. Lub sijhawm MIts kev tsim khoom, txheej kev txi cov txheej txheem los tsim cov qauv ib ntus uas tom qab raug tshem tawm tus qauv coj mus ib txhis.
Yuav ua li cas yog ib leeg - Crystal silicon thiab polycrystalline silicon ua?
Yog tias siv raws li substrate,
Ib Leeg -} Crystal Silicon feem ntau yog tsim kev siv CZ lossis FZ txoj kev. Cov txheej txheem CZ tau nthuav qhia yav tas los:
Taw qhia rau cov txheej txheem CZ tiav rau kev tsim ib leeg -} Crystal silicon.
Polycrrystalline silicon, ntawm qhov tod tes, siv thaiv kev ua pov thawj, fbr, thiab Siemens txoj kev.
Yog tias zaj duab xis tsim yog siv nyob rau hauv ib nti,
Ib Leeg -} Crystal silicon yuav tsum cvd ecitaxy, thiab lwm txoj hauv kev. Polycrrystalline silicon, ntawm qhov tod tes, tuaj yeem tsim tau siv CVD, PVD, thiab lwm txoj kev.
