Kev siv graphite hauv semiconductor thiab photovoltaic industries
Mar 02, 2022
Cov txheej txheem ntawm daim ntawv thov kev lag luam txhim kho thiab nthuav dav
Txoj kev loj hlob ntawm semiconductors yog inseparable los ntawm kev siv graphite cov ntaub ntawv nyob rau hauv lub semiconductor kev lag luam. Hauv kev lag luam semiconductor, ntau cov khoom siv high-purity graphite yog siv nyob rau hauv cov cua kub ntawm Czochralski ib leeg siv lead ua furnaces. Nws kuj yog siv los ua cov cuab yeej pabcuam thiab cov khoom siv hauv kev ua cov khoom siv semiconductor silicon wafers (xws li zone melting, epitaxy, shape processing, etc.); Raws li cov cuab yeej pabcuam thiab cov khoom siv hauv kev tsim cov khoom siv polysilicon rau semiconductor silicon wafers. Graphite khoom rau hluav taws xob engineering yog thawj zaug siv hauv kev lag luam semiconductor. Nyob rau hauv lub xyoo pua 21st, kev lag luam photovoltaic tau tsim sai heev, thiab kev tsim khoom thiab kev ua lag luam ntawm polycrystalline silicon ingot cov ntaub ntawv rau lub hnub ci hlwb tau nce los ntawm leaps thiab ciam teb, uas tseem muab lub lag luam tshiab nrog kev loj hlob dav dav rau cov khoom lag luam graphite hauv kev lag luam photovoltaic. Ingot polysilicon, ib qho tseem ceeb raw khoom rau lub hnub ci cell silicon wafers, tau pib siv ntau ntawm high-purity thiab high-quality graphite cov ntaub ntawv nyob rau hauv lub ingot cub tawg ntawm nws cov khoom siv.
Semiconductor Application Market Overview of Graphite Products
Cov khoom siv graphite siv nyob rau hauv Czochralski ib leeg siv lead ua rauv yog ib hom khoom siv, uas tau ua tiav los ntawm ntau yam high-purity graphites. Piv txwv li, graphite crucible thiab lwm yam graphite qhov chaw siv high-purity fine-grained graphite; graphite rhaub siv high-purity isotropic graphite; graphite rwb thaiv tsev npog thiab graphite npog siv high-purity nruab nrab-grained graphite.
Kev ua lag luam Txheej txheem cej luam ntawm Graphite khoom rau kev siv hnub ci Cell
Hauv kev tsim cov khoom siv ingot polysilicon, cov khoom siv graphite yuav tsum muaj rau ntau yam khoom. Tshwj xeeb, cov khoom siv cua sov siv nyob rau hauv lub tshuab hluav taws xob ingot - high-purity graphite, thiab cov khoom siv hluav taws xob siv hluav taws xob - high-purity carbon zoo li cov khoom siv hluav taws xob insulating yog txhua yam tseem ceeb thiab indispensable txhawb cov ntaub ntawv rau ingot polysilicon khoom tam sim no.
Txij li thaum lub cua sov kub ntawm lub cub tawg cua sov yog siab heev (tshaj 1600 degree), nws cov khoom siv cua sov yuav tsum tsis txhob hnov qab nrog cov khoom siv silicon thiab ua rau tsis muaj kuab paug rau cov khoom siv silicon, yog li nws tuaj yeem siv rau hauv lub tshuab nqus tsev thiab inert cua. ntev. Muaj cov hlau tungsten, molybdenum thiab non-metallic graphite rau cov cua sov uas tuaj yeem xaiv tau raws li kev siv. Vim tias tungsten thiab molybdenum yog kim thiab nyuaj rau txheej txheem, graphite muaj ntau qhov chaw thiab tuaj yeem ua rau ntau yam duab. Tsis tas li ntawd, graphite muaj cov yam ntxwv ntawm cov thermal inertia me me, cua kub ceev, kub tsis kam, zoo thermal shock resistance, loj hluav taws xob cheeb tsam, siab kub efficiency, thiab ruaj khov kev ua tau zoo. Vim li no, cov khoom siv graphite tau dhau los ua cov khoom siv cua sov nyiam hauv ingot rauv cua sov. Ingot furnace heaters muaj cov cai nruj rau cov khoom siv thermal rwb thaiv tsev. Nws yuav tsum yog cov khoom siv uas muaj qhov kub thiab txias, tsis muaj qhov ntom ntom, tsis tshua muaj thermal conductivity, tsawg tshav kub cia, zoo thermal rwb thaiv tsev nyhuv, tsawg outgassing, lub teeb yuag thiab me me expansion coefficient. Yog li ntawd, high-purity carbon xav yog qhov zoo tshaj plaws ntawm ntau cov ntaub ntawv rwb thaiv tsev refractory.
Cov lus hais saum toj no ob hom graphite khoom siv nyob rau hauv semiconductor thiab photovoltaic kev lag luam feem ntau yog los ntawm txawv teb chaws (los yog muab los ntawm txawv teb chaws-nyiaj lag luam nyob rau hauv mainland Tuam Tshoj) ob peb xyoos dhau los. Tab sis vim yog kev sib koom tes ntawm Tuam Tshoj txoj kev lag luam graphite, cov khoom siv semiconductor kev lag luam, cov khoom siv hluav taws xob hauv kev lag luam, Tuam Tshoj tus kheej tsim ntawm ob hom graphite txhawb nqa ob qho tib si hauv kev tsim tshuab, lossis hauv kev siv thev naus laus zis tau ua tiav zoo, cov qauv kev lag luam muaj. kuj tau hloov pauv heev. Qhov no tseem muab sijhawm tshiab rau Tuam Tshoj txoj kev lag luam graphite los tsim kev lag luam tshiab hauv qhov kev hwm no. Tab sis tib lub sijhawm, nws tseem yuav tsum tau pom tias thaum lub lag luam loj loj thiab siab purity isotropic graphite hauv Suav teb tau nce sai, Tuam Tshoj txoj kev tsim khoom siv thev naus laus zis hauv cheeb tsam no tseem tsis tau hloov mus rau yam, thev naus laus zis tseem yog qhov sib txawv loj nrog. txawv teb chaws advanced teb chaws. Raws li cov khoom siv tseem ceeb hauv microelectronics thiab photovoltaic kev lag luam, cov khoom siv graphite xav tau kev lag luam txuas ntxiv hauv Suav teb. Nws yog ib qho tseem ceeb kom ntxiv dag zog rau kev koom tes nrog kev lag luam semiconductor thiab cov khoom siv silicon tsim kev lag luam rau cov cell photovoltaic, thiab ntxiv kev nqis peev rau kev tsim cov khoom lag luam qib siab graphite txhawb nqa lawv.
