Lub interface ntawm silicon thiab silica. High-purity silicon hmoov muaj zoo interfacial zog. Piv nrog rau kev sib txuas ntawm lwm cov khoom siv semiconductor sib haum rau cov txheej txheem oxide, qhov sib cuam tshuam ntawm silicon thiab silicon dioxide yog zoo meej. Nrog rau kev txhim kho thev naus laus zis, kev tswj hwm ntawm kev cuam tshuam cuam tshuam tau zoo dua thiab zoo dua. Piv txwv li, tom qab kev txhim kho chav huv, qhov cuam tshuam ntawm qhov tsis xws luag tau qis heev. Nyob rau tib lub sijhawm, thaum txhaj cov impurities, silicon dioxide tuaj yeem ua cov txheej txheem tiv thaiv, tiv thaiv impurities xws li phosphorus thiab boron.
Qhov thib ob yog tias high-purity silicon hmoov yog cov khoom siv insulator ruaj khov (nws lub zog sib txawv yog li 9ev, Kuv tsis paub yog tias kuv nco qab nws raug), thaum germanium dioxide tsis yog tsuas yog tsis ruaj khov ntawm qhov kub thiab txias, tab sis kuj soluble hauv dej. Silicon dioxide tsis muaj teeb meem li ntawd; silicon dioxide lub zog loj qhov sib txawv yuav ua rau nws cov xau tam sim no me me (tau kawg, yog tias cov oxide txheej nyias dhau lawm, cov xau tam sim no yuav nce).
Piv nrog germanium, high-purity silicon hmoov muaj qhov sib txawv ntawm lub zog loj dua thiab yog li tuaj yeem tiv taus kev ua haujlwm siab dua thiab qhov dav dav impurity doping ntau. Lub zog tawg ntawm cov khoom siv silicon kuj tseem yuav siab dua. Yav dhau los, cov khoom siv semiconductor tau ua los ntawm germanium. Cov thev naus laus zis tau paub tab thiab qhov hloov pauv tau nrawm dua. Txawm li cas los xij, qhov no xav tau tus nqi siab. Capitalists xaiv silicon, yog li ntau tus kws tshawb fawb tau pib ua kev sib tw hauv silicon. Ntawm chav kawm, qhov no muaj feem xyuam rau ntau yam zoo heev ntawm silicon nws tus kheej, xws li loj reserves thiab ruaj khov. Lwm qhov zoo dua yog tias silica yog ib qho hluav taws xob insulator thiab tuaj yeem siv ncaj qha los ua interlayer tom qab kev kho cua sov.
High-purity silicon hmoov nrog silicon ntsiab lus ntawm 99% (2N), 99.9% (3N), 99.99% (4N) thiab tsis tshua muaj oxygen, carbon, phosphorus, sulfur thiab hlau impurities, uas tuaj yeem ua tau raws li qhov xav tau ntawm cov txheej txheem kev lag luam nrog siab. impurity xav tau. xav tau, sau qhov sib txawv nyob rau hauv lub teb ntawm domestic high-purity industrial silicon hmoov. Aluminium alloys, titanium alloys, tooj liab alloys, high-performance silicon nitride thiab carbon ...
