Nrog rau kev txhim kho tas mus li ntawm lub ntiaj teb niaj hnub no, lub zog tsis rov ua dua tshiab tau dhau los ua qhov tsis zoo, thiab tib neeg lub zej zog tau maj mam siv lub zog rov ua dua tshiab uas sawv cev los ntawm "cua, lub teeb, dej thiab nuclear". Piv nrog rau lwm cov peev txheej rov ua dua tshiab, tib neeg muaj cov thev naus laus zis laus tshaj plaws, muaj kev nyab xeeb thiab txhim khu kev qha rau kev siv lub zog hnub ci. Ntawm lawv, kev lag luam photovoltaic cell nrog cov silicon siab-purity ua lub substrate tau tsim kho sai heev. Thaum kawg ntawm xyoo 2023, kuv lub teb chaws cov peev xwm teeb tsa hnub ci photovoltaic tau tshaj 250 gigawatts, thiab photovoltaic fais fab tsim tau mus txog 266.3 billion kWh, nce li 30% xyoo-rau-xyoo, thiab lub peev xwm tsim hluav taws xob tshiab ntxiv yog 78.42 lab kilowatts, nce 154% xyoo-rau-xyoo. Txij li thaum kawg ntawm Lub Rau Hli, cov peev xwm teeb tsa tag nrho ntawm photovoltaic fais fab tsim yog li 470 lab kilowatts, uas tau dhau hydropower los ua qhov chaw muaj zog thib ob hauv kuv lub teb chaws.
Thaum kev lag luam photovoltaic tab tom txhim kho sai, kev lag luam cov ntaub ntawv tshiab txhawb nqa nws kuj tseem tab tom txhim kho sai. Cov khoom siv quartz xws licov khoom siv quartz, cov nkoj quartz, thiab cov fwj quartz yog cov ntawm lawv, ua lub luag haujlwm tseem ceeb hauv cov txheej txheem tsim khoom photovoltaic. Piv txwv li, quartz crucibles yog siv los tuav cov silicon molten hauv kev tsim cov pas nrig silicon thiab silicon ingots; cov nkoj quartz, cov raj, lub raj mis, cov thoob dej ntxuav, thiab lwm yam ua lub luag haujlwm tseem ceeb hauv kev sib kis, kev ntxuav thiab lwm yam kev sib txuas hauv kev tsim cov roj teeb hnub ci, thiab lwm yam, kom ntseeg tau tias cov khoom siv silicon huv thiab zoo.
Cov ntawv thov tseem ceeb ntawm cov khoom siv quartz rau kev tsim khoom photovoltaic
Hauv cov txheej txheem tsim khoom ntawm lub hnub ci photovoltaic cells, silicon wafers raug muab tso rau ntawm lub nkoj wafer, thiab lub nkoj raug muab tso rau ntawm lub nkoj wafer txhawb nqa rau kev sib kis, LPCVD thiab lwm yam txheej txheem thermal, thaum lub silicon carbide cantilever paddle yog qhov tseem ceeb thauj khoom rau kev txav lub nkoj txhawb nqa nqa silicon wafers mus rau hauv thiab tawm ntawm lub cub tawg cua sov. Raws li pom hauv daim duab hauv qab no, lub silicon carbide cantilever paddle tuaj yeem ua kom muaj kev sib sau ua ke ntawm silicon wafer thiab lub raj cua sov, yog li ua rau kev sib kis thiab passivation ntau dua. Tib lub sijhawm, nws tsis muaj kuab paug thiab tsis deformed ntawm qhov kub siab, muaj kev tiv thaiv thermal zoo thiab muaj peev xwm thauj khoom loj, thiab tau siv dav hauv thaj chaw ntawm photovoltaic cells.
Daim duab qhia txog cov khoom tseem ceeb ntawm cov roj teeb thauj khoom
Hauv cov txheej txheem tsaws tsaws muag muag, lub nkoj quartz ib txwm muaj thiabnkoj waferkev txhawb nqa yuav tsum muab cov silicon wafer ua ke nrog lub nkoj txhawb nqa quartz rau hauv lub raj quartz hauv lub cub tawg diffusion. Hauv txhua txoj kev diffusion, lub nkoj txhawb nqa quartz uas muaj silicon wafers raug muab tso rau ntawm lub silicon carbide paddle. Tom qab lub silicon carbide paddle nkag mus rau hauv lub raj quartz, lub paddle cia li poob rau hauv qab kom muab lub nkoj txhawb nqa quartz thiab silicon wafer, thiab tom qab ntawd maj mam khiav rov qab mus rau qhov keeb kwm. Tom qab txhua txoj kev, lub nkoj txhawb nqa quartz yuav tsum tau tshem tawm ntawmsilicon carbide pas nrig. Kev ua haujlwm ntau zaus li no yuav ua rau lub nkoj txhawb nqa quartz hnav tawm ntev heev. Thaum lub nkoj txhawb nqa quartz tawg thiab tawg, tag nrho lub nkoj txhawb nqa quartz yuav poob ntawm lub silicon carbide paddle, thiab tom qab ntawd ua puas tsuaj rau cov khoom quartz, silicon wafers thiab silicon carbide paddles hauv qab. Lub silicon carbide paddle kim heev thiab tsis tuaj yeem kho tau. Thaum muaj xwm txheej tshwm sim, nws yuav ua rau muaj kev puas tsuaj loj heev.
Hauv cov txheej txheem LPCVD, tsis yog tsuas yog cov teeb meem kev ntxhov siab thermal uas tau hais los saum toj no yuav tshwm sim xwb, tab sis txij li thaum cov txheej txheem LPCVD xav tau cov roj silane kom dhau los ntawm silicon wafer, cov txheej txheem ntev kuj tseem yuav tsim cov txheej silicon ntawm lub nkoj txhawb nqa wafer thiab lub nkoj wafer. Vim yog qhov tsis sib xws ntawm cov coefficients thermal expansion ntawm cov silicon thiab quartz coated, lub nkoj txhawb nqa thiab lub nkoj yuav tawg, thiab lub neej ntev yuav raug txo qis heev. Lub neej ntev ntawm cov nkoj quartz thiab cov nkoj txhawb nqa hauv cov txheej txheem LPCVD feem ntau tsuas yog 2 txog 3 lub hlis. Yog li ntawd, nws yog qhov tseem ceeb tshwj xeeb los txhim kho cov khoom txhawb nqa nkoj kom ua rau lub zog thiab lub neej ua haujlwm ntawm kev txhawb nqa nkoj kom tsis txhob muaj xwm txheej zoo li no.
Hauv ntej, thaum lub sijhawm ua haujlwm thiab tus lej ntawm lub sijhawm nce ntxiv thaum lub sijhawm tsim cov roj teeb hnub ci, cov nkoj quartz thiab lwm yam khoom muaj feem yuav tawg lossis tawg. Lub neej ntawm cov nkoj quartz thiab cov raj quartz hauv cov kab ntau lawm tam sim no hauv Suav teb yog li 3-6 lub hlis, thiab lawv yuav tsum tau kaw tsis tu ncua rau kev ntxuav, kev saib xyuas, thiab kev hloov pauv ntawm cov neeg nqa khoom quartz. Ntxiv mus, cov xuab zeb quartz ntshiab siv ua cov khoom siv raw rau cov khoom siv quartz tam sim no nyob rau hauv lub xeev ntawm kev muab khoom nruj thiab kev thov, thiab tus nqi tau khiav ntawm qib siab ntev, uas pom tseeb tias tsis zoo rau kev txhim kho kev ua haujlwm zoo thiab cov txiaj ntsig kev lag luam.
Cov khoom siv silicon carbide ceramics"qhia tuaj"
Tam sim no, tib neeg tau los nrog cov khoom siv uas muaj kev ua tau zoo dua los hloov qee cov khoom siv quartz-silicon carbide ceramics.
Cov khoom siv silicon carbide ceramics muaj lub zog zoo, kev ruaj khov thermal, kev tiv taus kub siab, kev tiv taus oxidation, kev tiv taus thermal shock thiab kev tiv taus tshuaj corrosion, thiab siv dav hauv cov teb kub xws li metallurgy, tshuab, lub zog tshiab, thiab cov ntaub ntawv tsim kho thiab tshuaj lom neeg. Nws qhov kev ua tau zoo kuj txaus rau kev sib kis ntawm TOPcon hlwb hauv kev tsim photovoltaic, LPCVD (low pressure chemical vapor deposition), PECVD (plasma chemical vapor deposition) thiab lwm yam kev sib txuas thermal.
Kev txhawb nqa nkoj LPCVD silicon carbide thiab kev txhawb nqa nkoj boron-expanded silicon carbide
Piv nrog cov ntaub ntawv quartz ib txwm muaj, cov kev txhawb nqa nkoj, nkoj, thiab cov khoom siv raj ua los ntawm silicon carbide ceramic cov ntaub ntawv muaj zog dua, kev ruaj khov thermal zoo dua, tsis muaj kev hloov pauv ntawm qhov kub siab, thiab lub neej ntev dua 5 npaug ntawm cov ntaub ntawv quartz, uas tuaj yeem txo qhov nqi siv thiab kev poob zog los ntawm kev saib xyuas thiab lub sijhawm tsis ua haujlwm. Qhov zoo ntawm tus nqi yog qhov pom tseeb, thiab qhov chaw ntawm cov khoom siv raw yog dav.
Ntawm lawv, cov tshuaj tiv thaiv sintered silicon carbide (RBSiC) muaj qhov kub sintering qis, tus nqi tsim khoom qis, cov khoom siv ntom ntom siab, thiab yuav luag tsis muaj qhov ntim shrinkage thaum lub sijhawm tshuaj tiv thaiv sintering. Nws yog qhov tshwj xeeb tshaj yog rau kev npaj cov khoom loj thiab cov duab sib txawv. Yog li ntawd, nws yog qhov tsim nyog tshaj plaws rau kev tsim cov khoom loj thiab cov khoom sib txawv xws li cov khoom txhawb nqa nkoj, nkoj, cantilever paddles, lub raj cua sov, thiab lwm yam.
Cov nkoj silicon carbide waferkuj muaj kev cia siab loj heev yav tom ntej. Txawm hais tias LPCVD txheej txheem lossis cov txheej txheem nthuav dav boron, lub neej ntawm lub nkoj quartz yog qhov qis, thiab cov coefficient thermal nthuav dav ntawm cov khoom siv quartz tsis sib xws nrog cov khoom siv silicon carbide. Yog li ntawd, nws yooj yim kom muaj kev hloov pauv hauv cov txheej txheem ntawm kev sib phim nrog lub nkoj tuav silicon carbide ntawm qhov kub siab, uas ua rau muaj qhov xwm txheej ntawm kev co lub nkoj lossis txawm tias tawg lub nkoj. Lub nkoj silicon carbide txais yuav txoj kev ua tiav ntawm ib daim molding thiab kev ua tiav tag nrho. Nws cov duab thiab qhov chaw kam rau siab yog qhov siab, thiab nws koom tes zoo dua nrog lub nkoj tuav silicon carbide. Tsis tas li ntawd, silicon carbide muaj lub zog siab, thiab lub nkoj tsis tshua muaj feem yuav tawg vim tib neeg sib tsoo dua li lub nkoj quartz.
Silicon carbide wafer nkoj
Lub raj cua sov yog lub ntsiab lus tseem ceeb ntawm lub cub tawg, uas ua lub luag haujlwm hauv kev sib khi thiab kev hloov pauv cua sov sib xws. Piv nrog rau cov raj cua sov quartz, cov raj cua sov silicon carbide muaj cov cua sov zoo, cua sov sib xws, thiab kev ruaj khov thermal zoo, thiab lawv lub neej ntev dua 5 npaug ntawm cov raj quartz.
Kev Txheeb Xyuas
Feem ntau, txawm hais tias nyob rau hauv cov nqe lus ntawm cov khoom ua tau zoo lossis tus nqi ntawm kev siv, cov ntaub ntawv ceramic silicon carbide muaj ntau qhov zoo dua li cov ntaub ntawv quartz hauv qee qhov ntawm lub hnub ci cell teb. Kev siv cov ntaub ntawv ceramic silicon carbide hauv kev lag luam photovoltaic tau pab cov tuam txhab photovoltaic txo cov nqi peev ntawm cov ntaub ntawv pabcuam thiab txhim kho cov khoom zoo thiab kev sib tw. Yav tom ntej, nrog rau kev siv loj ntawm cov raj loj silicon carbide cub tawg, cov nkoj siab-purity silicon carbide thiab cov nkoj txhawb nqa thiab kev txo qis ntawm cov nqi, kev siv cov ntaub ntawv ceramic silicon carbide hauv thaj chaw ntawm photovoltaic cells yuav dhau los ua qhov tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm kev hloov pauv lub teeb thiab txo cov nqi kev lag luam hauv thaj chaw ntawm kev tsim hluav taws xob photovoltaic, thiab yuav muaj kev cuam tshuam tseem ceeb rau kev txhim kho lub zog tshiab photovoltaic.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-05-2024