Txij thaum pib npaj cmos thaum ntxov rau kev txhim kho feather, P-hom substrates txuas ntxiv yuav dav siv dav hauv kev tsim hluav taws xob. Vim li cas Continated Circuit Coactoractor lag luam nyiam P-hom Silicon?
P-hom silicon thiab n-hom silicon?
Intrinsic silicon muaj hluav taws xob tsis zoo. Thaum penavalent ntsiab (xws li phosphorus p, arsenic li, antimes sbed rau hauv nws, ib qho ntxiv "hluav taws xob ntxiv" yuav tsim tawm. Cov tshuab hluav taws xob dawb no tuaj yeem txav mus los dawb → tsim lub sliconductor uas yog feem ntau yog siv hluav taws xob, hu ua n-hom silicon. Thaum lub sijhawm so (xws li boron b) yog doped, txij li boron atoms muaj ib qho kev ntsuas hluav taws xob tsawg dua li silicon → "qhov" yuav tsim nyob rau hauv lattice. Cov qhov no tuaj yeem txav cov neeg nqa khoom ywj pheej thiab ua cov khoom lag luam loj, uas tau siv los tsim cov khoom siv NMOs.
Dab tsi yog keeb kwm thiab cov laj thawj ua rau siv p-hom silicon?
1. NMOs cov khoom siv nyob rau hnub thaum ntxov
Xyoo 1970 thiab 1980s, cov kev ncig digital pib feem ntau siv nmos-tsuas yog logic voj voog. Cov qauv NMOs tau nrawm thiab yooj yim ua, thiab tuaj yeem ua ncaj qha rau p-hom substrate yam tsis muaj kev xav tau ib qho qauv ntxiv; Yog li: P-hom hom substrate yog lub ntuj substrate uas txhawb nqa NMOs pab kiag li lawm.
2. CMOS Technology txuas ntxiv P-hom Wafer qauv
Tom qab rov tshwm sim ntawm Cmos Technology, NMOs thiab PMOs thiab PMOs yuav tsum tau ntxiv rau ntawm PMOs cov txheej txheem yav dhau los) PMOs ua kom tiav rau cov p-hom uas twb muaj lawm substrate.
3. Cov txheej txheem sib xyaw thiab cov paib tswj
Siv P-Hom Substrate ua rau nws yooj yim dua los tswj cov teeb meem tsis sib xws; Cov khoom siv hluav taws xob, raws li cov txiag hluav taws xob tsawg (hauv P-hom), muaj qhov luv luv diffusion deb thiab yog ib qho yooj yim los txhawb kev cuam tshuam parasitic; Cov av hauv av substrate tsim thiab cov qauv sib cais kuj tseem ua tau zoo nyob ib ncig ntawm P-hom Silicon txheej txheem.
4. Tsau substrate peev xwm (yooj yim bias)
P-hom substrate tuaj yeem ncaj qha hauv paus (GND) raws li kev sib koom ua ke siv tau; Yog tias nws yog n-hom substrate, lub substrate yuav tsum txuas nrog rau cov kev hloov pauv hloov, ua rau PMOs VT offset thiab cov teeb meem nrov.
