Qhib Kev Hloov Pauv ntawm Semiconductor Silicon: Tuam Tshoj Lub Zog hauv High-Purity 6N Crystal Boron Dopants
Ntawm qhov siab tshaj plaws ntawm kev tsim khoom raug, txhua qhov kev ua tau zoo hauv semiconductor silicon pib nrog kev tswj hwm meej ntawm qib atomic. Tus yuam sij rau kev ua tiav qhov kev tswj hwm no yog nyob rau hauv ultra-high-purity crystalline boron dopants. Raws li cov khoom siv tseem ceeb rau kev lag luam hluav taws xob thoob ntiaj teb, 6N crystalline boron (purity ≥99.9999%), nrog nws cov khoom tsis muaj peev xwm hloov pauv, tau dhau los ua "tus kws kes duab vajtse tsis pom" uas tsim cov chips niaj hnub thiab cov khoom siv fais fab.
Vim li cas 6N thiaj li siv lead uaboron"txoj kab cawm siav" ntawm semiconductor silicon?
Qhov "Hloov" P-hom tseeb: Thaum cov 6N boron atoms raug qhia meej rau hauv lub semiconductor silicon lattice, lawv tsim cov "qhov" tseem ceeb uas muab rau lub silicon wafer nws cov P-hom conductivity. Qhov no yog lub hauv paus rau kev tsim cov diodes, cov transistors teb-effect (FETs), thiab txawm tias cov circuits sib xyaw ua ke.
Lub hauv paus tseem ceeb ntawm kev ua tau zoo: Qhov ua tau zoo, kev ruaj khov, thiab kev hloov pauv ceev ntawm cov khoom siv semiconductor yog nyob ntawm qhov sib xws thiab kev huv ntawm kev doping. Txhua yam tsis huv (xws li carbon, oxygen, thiab cov hlau) tuaj yeem ua haujlwm ua cov cuab yeej nqa khoom, ua rau muaj kev xau hluav taws xob ntau ntxiv thiab ua tsis tiav ntawm cov khoom siv. 6N boron crystalline tswj cov qib tsis huv mus rau qib ib feem-ib-billion (ppb), ua kom ntseeg tau tias qhov kawg huv thiab kev ntseeg siab ntawm kev ua tau zoo hluav taws xob semiconductor silicon.
Ib tug neeg saib xyuas cov txheej txheem kub siab: Nrog lub melting point saum 2300 ° C, crystalline boron muaj qhov ruaj khov thermal zoo heev. Thaum lub sijhawm ua cov txheej txheem nyuaj xws li silicon single crystal growth (Czochralski method) lossis high-temperature diffusion/ion implantation annealing, 6N crystalline boron tswj kev ruaj khov ntawm cov qauv yam tsis muaj kev qhia txog cov volatiles lossis cov khoom decomposition tsis tau xav txog, ua kom ntseeg tau tias cov txheej txheem tswj tau thiab rov ua dua.
Tau ua pov thawj hauv kev siv thoob ntiaj teb tshiab: Kev xaiv ntseeg siab rau cov neeg siv khoom Kauslim thiab Nyiv Pooj
Rooj plaub 1 (Lub chaw tsim khoom semiconductor silicon wafer hauv Kaus Lim Qab Teb): UrbanMines '6N boron hmoov (99.9999% purity, 2-3 hli qhov loj me) tau siv ua cov khoom siv dopant tseem ceeb hauv lub cub tawg Czochralski ib leeg siv lead ua kom loj hlob cov khoom siv semiconductor silicon ingots P-hom zoo nrog qhov ntau yam resistivity tshwj xeeb rau kev tsim cov chips logic siab heev.
Rooj Plaub 2 (Japanese silicon epitaxial wafer/device manufacturer): UrbanMines tau raug xaiv los yuav 6N pure boron dopant (purity 99.9999%, particle size -4+40 mesh). Cov dopant no yog siv rau hauv epitaxial growth lossis high-temperature diffusion processes kom tswj tau qhov boron concentration distribution hauv semiconductor silicon epitaxial layer lossis junction zone, ua tau raws li cov kev cai nruj ntawm cov high-voltage power devices (xws li IGBTs).
Tuam Tshoj Khoom Siv: Cov Kev Zoo ntawm 6N Crystalline Boron
Ntsib qhov kev thov siab heev los ntawm cov cheeb tsam semiconductor thoob ntiaj teb xws li Kaus Lim Qab Teb, Nyiv Pooj, thiab Tebchaws Meskas, peb lub tuam txhab tau tsim kom muaj kev tsim khoom thiab kev muab khoom zoo hauv kev ua cov ntaub ntawv boron siab:
1. Kev tshawb fawb tshiab thiab kev txuag nyiaj ntawm qhov loj: Los ntawm kev tshawb fawb thiab kev txhim kho tas mus li, peb lub tuam txhab tau ua tiav cov txheej txheem tsim khoom loj rau β-rhombohedral boron uas muaj kev ntshiab siab (qhov ruaj khov tshaj plaws). Qhov no tso cai rau peb muab ntau yam kev ntshiab, txij li 99% txog 6N (99.9999%) thiab siab dua. Peb lub peev xwm tsim khoom ruaj khov tso cai rau peb ua tau raws li cov xaj loj los ntawm cov neeg siv khoom loj thoob ntiaj teb (raws li pom los ntawm peb qhov kev thov txhua hli rau 50kg ntawm amorphous boron rau kev siv hnub ci).
2. Kev tswj xyuas zoo nruj: Peb tau tsim kom muaj kev tswj hwm thiab kev tswj hwm zoo heev rau tag nrho cov txheej txheem, suav nrog kev tshuaj xyuas cov khoom siv raw, kev sib xyaw ua ke, kev ntxuav thiab kev ua kom zoo (xws li kev yaj hauv cheeb tsam thiab kev nqus tsev), kev tsoo thiab kev ntsuas qib, thiab kev ntim khoom. Qhov no ua kom ntseeg tau tias txhua pawg ntawm 6N boron crystals muaj qhov sib xws zoo heev.
3. Kev Muaj Peev Xwm Kho Kom Haum: Peb lub tuam txhab nkag siab tob txog qhov yuav tsum tau ua ntawm cov txheej txheem semiconductor rau daim ntawv boron (granules, hmoov) thiab qhov loj me ntawm cov khoom me me (piv txwv li, D50 ≤ 10μm, -200 mesh, 1-10mm, 2-4μm, thiab lwm yam). Raws li tau hais hauv daim ntawv, "kev tsim khoom tshwj xeeb kuj ua tau yog tias qhov yuav tsum tau ua tiav qhov loj me ntawm cov khoom me me." Qhov kev teb tau yooj yim no yog qhov tseem ceeb rau kev yeej cov neeg siv khoom siab hauv Kaus Lim Qab Teb, Nyiv Pooj, thiab lwm lub tebchaws.
4. Kev Koom Tes Hauv Kev Lag Luam thiab Cov Txiaj Ntsig Zoo ntawm Tus Nqi: Siv lub tshuab kev lag luam hauv tsev thiab cov khoom siv raw, peb cov 6N crystalline boron tsis yog tsuas yog ua kom muaj qhov zoo tshaj plaws xwb tab sis kuj muaj kev ywj pheej zoo dua thiab kev sib tw nqi tag nrho, muab kev txhawb nqa cov khoom siv tseem ceeb ruaj khov, txhim khu kev qha, thiab pheej yig rau kev lag luam tsim khoom semiconductor thoob ntiaj teb.
Xaus Lus: Cov ntaub ntawv boron ntawm Tuam Tshoj ua tus thawj coj hauv kev txhawb nqa cov chips yav tom ntej
Txij li cov processors tseem ceeb ntawm cov xov tooj ntse mus rau cov chips fais fab uas muab lub zog rau "lub hlwb" ntawm cov tsheb fais fab tshiab, cov ciam teb kev ua tau zoo ntawm semiconductor silicon txuas ntxiv mus txhais los ntawm qhov huv si thiab qhov tseeb ntawm 6N crystalline boron dopants. Tuam Tshoj txoj kev lag luam boron siab-purity, nrog nws cov kev txawj ntse hauv kev siv tshuab, kev tswj hwm zoo nruj, kev hloov kho tau yooj yim, thiab muaj peev xwm tsim khoom zoo, tab tom dhau los ua tus tsav tsheb tseem ceeb ntawm kev tsim kho tshiab semiconductor thoob ntiaj teb.
Kev xaiv ib lub tuam txhab Suav 6N boron crystal uas ntseeg tau txhais tau tias xaiv txoj kev meej rau yav tom ntej ntawm semiconductor silicon. Peb koom nrog hauv kev lag luam ntawm cov boron ntshiab, peb muaj peev xwm tsim khoom thiab cov kev daws teeb meem tshwj xeeb kom tau raws li cov ntawv thov semiconductor uas xav tau tshaj plaws. Tiv tauj peb hnub no kom txhaj tshuaj boron fais fab Suav muaj zog thiab meej rau hauv koj cov khoom siv semiconductor silicon!