Kev tshawb fawb txog tus qauv ntawm N-hom TOPCon hlwb
- Kho tshiab: 2023-05-14
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ooitech ua
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Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho thiab siv cov thev naus laus zis tshiab, cov txheej txheem tshiab thiab cov qauv tshiab ntawm cov cell photovoltaic, kev lag luam photovoltaic cell tau tsim sai heev. Raws li cov thev naus laus zis tseem ceeb txhawb kev txhim kho lub zog tshiab thiab cov phiaj xwm ntse, n-hom hlwb tau dhau los ua qhov chaw kub kub hauv kev tsim kho thoob ntiaj teb.
Vim hais tias n-hom tunneling oxide txheej passivation hu rau photovoltaic cell (tom qab no hu ua "n-type TOPCon cell") muaj qhov ua tau zoo ntawm kev txhim kho kev ua tau zoo piv nrog cov pa hluav taws xob photovoltaic, nrog rau kev nce nqi ntawm cov nqi tswj tau thiab cov khoom siv mature transformation, lub n-hom TOPCon cell Ntxiv nthuav dav ntawm domestic ntau lawm muaj peev xwm tau dhau los ua lub ntsiab kev loj hlob kev taw qhia ntawm high-efficiency photovoltaic hlwb.
Kev tsim qauv ntawm n-hom TOPCon roj teeb ntsib teeb meem xws li tsis muaj peev xwm los npog cov qauv tam sim no thiab qhov xav tau los txhim kho kev siv ntawm cov qauv. Daim ntawv no yuav ua kev tshawb fawb thiab kev tshuaj xyuas ntawm tus qauv ntawm n-hom TOPCon roj teeb, thiab muab cov lus qhia rau kev tsim qauv.Txoj kev loj hlob ntawm n-hom TOPCon cell technologyCov qauv ntawm p-hom silicon puag cov khoom siv hauv cov pa hluav taws xob photovoltaic yog n + pp +, lub teeb tau txais qhov chaw yog n + nto, thiab phosphorous diffusion yog siv los tsim cov emitter.Muaj ob lub ntsiab ntawm homojunction photovoltaic cell qauv rau n-hom silicon puag cov ntaub ntawv, ib qho yog n + np +, thiab lwm yam yog p + nn +.Piv nrog p-type silicon, n-type silicon muaj cov neeg nqa khoom tsawg dua lub neej, txo qis qis, thiab muaj peev xwm ua tau zoo dua.N-hom ob-sided cell ua los ntawm n-hom silicon muaj qhov zoo ntawm kev ua haujlwm siab, lub teeb pom kev zoo, tsis tshua muaj qhov kub thiab txias coefficient, thiab ntau dua ob lub zog hluav taws xob.Raws li kev lag luam cov kev xav tau rau photoelectric conversion efficiency ntawm photovoltaic hlwb txuas ntxiv mus, n-hom high-efficiency photovoltaic hlwb xws li TOPCon, HJT, thiab IBC yuav maj mam tuav lub lag luam yav tom ntej.Raws li 2021 International Photovoltaic Roadmap (ITRPV) thoob ntiaj teb photovoltaic kev lag luam thev naus laus zis thiab kev lag luam kwv yees, n-hom hlwb sawv cev rau yav tom ntej thev naus laus zis thiab kev lag luam kev lag luam kev taw qhia ntawm photovoltaic hlwb hauv tsev thiab txawv teb chaws.Ntawm cov kev tshaj lij ntawm peb hom n-hom roj teeb, n-hom TOPCon roj teeb tau dhau los ua cov txheej txheem thev naus laus zis nrog kev lag luam loj tshaj plaws vim lawv qhov zoo ntawm kev siv cov khoom siv uas twb muaj lawm thiab kev hloov pauv siab.
Tam sim no, n-hom TOPCon roj teeb nyob rau hauv kev lag luam feem ntau yog npaj raws li LPCVD (tsawg-siab vapor-theem chemical deposition) technology, uas muaj ntau cov txheej txheem, efficiency thiab tawm los yog txwv, thiab cov cuab yeej cia siab rau imports. Nws yuav tsum tau txhim kho. Qhov loj-scale zus tau tej cov n-hom TOPCon hlwb ntsib teeb meem xws li raug nqi siab, txheej txheem nyuaj, tsis tshua muaj yield tus nqi, thiab tsis txaus conversion efficiency.Kev lag luam tau ua ntau yam kev sim los txhim kho cov thev naus laus zis ntawm n-hom TOPCon hlwb. Ntawm lawv, nyob rau hauv-situ doped polysilicon txheej tshuab yog siv nyob rau hauv ib tug txheej txheem deposition ntawm tunneling oxide txheej thiab doped polysilicon (n +-polySi) txheej tsis wrapping plating;Cov hlau electrode ntawm n-hom TOPCon roj teeb yog npaj los ntawm kev siv cov thev naus laus zis tshiab ntawm kev sib xyaw ua ke ntawm aluminium paste thiab silver paste, uas txo cov nqi thiab txhim kho kev sib cuag; adopts pem hauv ntej xaiv emitter qauv thiab sab nraum qab multi-txheej tunneling passivation hu cov qauv technology.Cov kev hloov kho thev naus laus zis thiab kev ua kom zoo dua qub tau ua rau qee yam kev koom tes rau kev lag luam ntawm n-hom TOPCon hlwb.Kev tshawb fawb txog kev ua qauv ntawm n-hom TOPCon roj teebMuaj qee qhov kev sib txawv ntawm n-hom TOPCon hlwb thiab cov pa p-hom photovoltaic hlwb, thiab kev txiav txim siab ntawm cov cell photovoltaic hauv kev ua lag luam yog raws li cov qauv roj teeb tam sim no, thiab tsis muaj cov qauv tsim nyog rau n-hom photovoltaic cells. .N-hom TOPCon cell muaj cov yam ntxwv ntawm qis attenuation, tsis tshua muaj kub coefficient, high efficiency, siab bifacial coefficient, siab qhib voltage, thiab lwm yam. Nws txawv ntawm cov pa photovoltaic hlwb nyob rau hauv cov nqe lus ntawm cov qauv.
Tshooj lus no yuav pib los ntawm kev txiav txim siab ntawm tus qauv ntsuas ntawm n-hom TOPCon roj teeb, nqa tawm cov ntaub ntawv pov thawj nyob ib ncig ntawm qhov curvature, electrode tensile lub zog, kev ntseeg tau, thiab pib lub teeb-induced attenuation kev ua tau zoo, thiab sib tham txog cov txiaj ntsig pov thawj.Kev txiav txim siab ntawm tus qauv ntsuasCov pa hluav taws xob photovoltaic yog raws li cov khoom lag luam tus qauv GB / T29195-2012 "Cov Lus Qhia Tshwj Xeeb rau Hauv av-Siv Crystalline Silicon Solar Cells", uas qhia meej txog cov yam ntxwv ntawm cov cell photovoltaic.Raws li qhov yuav tsum tau ua ntawm GB / T29195-2012, ua ke nrog cov yam ntxwv ntawm n-hom TOPCon roj teeb, kev tshuaj xyuas tau ua los ntawm cov khoom.Saib Table 1, n-hom TOPCon roj teeb yog qhov pib zoo ib yam li cov roj teeb uas siv tau raws li qhov loj thiab qhov pom;
Table 1 Sib piv ntawm n-hom TOPCon roj teeb thiab GB / T29195-2012 yuav tsum
Hais txog kev ua haujlwm hluav taws xob tsis zoo thiab qhov kub thiab txias, kev ntsuas tau ua raws li IEC60904-1 thiab IEC61853-2, thiab cov txheej txheem ntsuas tau ua raws li cov roj teeb pom kev zoo; Cov kev xav tau ntawm cov khoom siv kho tshuab yog txawv ntawm cov roj teeb li niaj zaus hauv cov ntsiab lus ntawm dabtsi yog khoov degree thiab electrode tensile zog.Tsis tas li ntawd, raws li qhov tseeb daim ntawv thov ib puag ncig ntawm cov khoom, ib qho kev ntsuas kub damp yog ntxiv raws li qhov yuav tsum tau muaj kev ntseeg tau.Raws li kev soj ntsuam saum toj no, kev sim tau ua tiav los txheeb xyuas cov khoom siv kho tshuab thiab kev ntseeg siab ntawm n-hom TOPCon roj teeb.Cov khoom siv ntawm tes photovoltaic los ntawm cov tuam txhab sib txawv nrog tib txoj hauv kev tau raug xaiv los ua cov qauv sim. Cov qauv yog muab los ntawm Taizhou Jolywood Optoelectronics Technology Co., Ltd.Qhov kev sim no tau ua nyob rau hauv lub chaw soj nstuam thib peb thiab cov chaw soj nstuam lag luam, thiab qhov tsis xws li khoov degree thiab electrode tensile lub zog, thermal cycle test thiab damp heat test, thiab thawj lub teeb-induced attenuation kev ua tau zoo tau sim thiab xyuas.Kev txheeb xyuas cov cuab yeej cuab tam ntawm Photovoltaic CellsKev khoov qib thiab electrode tensile lub zog nyob rau hauv cov khoom siv ntawm n-hom TOPCon roj teeb raug kuaj ncaj qha rau ntawm daim ntawv roj teeb nws tus kheej, thiab kev pov thawj ntawm txoj kev sim yog raws li hauv qab no.Curvature hais txog qhov sib txawv ntawm qhov nruab nrab ntawm qhov nruab nrab ntawm qhov nruab nrab ntawm cov qauv kuaj thiab cov dav hlau siv ntawm qhov nruab nrab. Nws yog ib qho tseem ceeb qhia rau kev ntsuam xyuas lub flatness ntawm lub roj teeb nyob rau hauv kev ntxhov siab los ntawm kev ntsuam xyuas qhov khoov deformation ntawm lub photovoltaic cell.Nws txoj kev sim thawj zaug yog ntsuas qhov kev ncua deb ntawm qhov nruab nrab ntawm lub wafer mus rau lub dav hlau siv siv qhov ntsuas qhov ntsuas qis qis.Jolywood Optoelectronics thiab Xi'an State Power Investment muab 20 daim ntawm M10 loj n-hom TOPCon roj teeb txhua. Qhov flatness ntawm qhov saum npoo yog zoo dua 0.01mm, thiab lub roj teeb curvature tau sim nrog cov cuab yeej ntsuas nrog kev daws teeb meem zoo dua 0.01mm.Lub roj teeb bending xeem yog ua raws li cov kev cai ntawm 4.2.1 hauv GB / T29195-2012.Cov txiaj ntsig kev xeem tau pom nyob rau hauv Table 2.
Table 2 Bending test results of n-type TOPCon cells
Lub tuam txhab kev tswj hwm sab hauv cov qauv ntawm Jolywood thiab Xi'an State Power Investment ob qho tib si xav kom cov qib khoov tsis siab tshaj 0.1 hli. Raws li kev soj ntsuam ntawm cov qauv ntsuas ntsuas, qhov nruab nrab khoov qib ntawm Jolywood Optoelectronics thiab Xi'an State Power Investment yog 0.056mm thiab 0.053mm feem. Qhov siab tshaj plaws yog 0.08mm thiab 0.10mm, feem.Raws li cov txiaj ntsig ntawm kev kuaj xyuas, qhov yuav tsum tau ua kom qhov curvature ntawm n-hom TOPCon roj teeb tsis siab tshaj 0.1 hli yog npaj.Electrode tensile zog kuaj xyuasCov hlau ribbon txuas nrog daim phiaj hlau ntawm lub xov tooj ntawm tes photovoltaic los ntawm kev vuam los ua tam sim no. Lub solder ribbon thiab cov electrode yuav tsum tau txuas nrog stably kom txo tau qhov kev tiv thaiv thiab xyuas kom meej qhov kev ua tau zoo tam sim no.Vim li no, qhov ntsuas hluav taws xob tensile lub zog ntawm daim phiaj hlau ntawm lub roj teeb tuaj yeem soj ntsuam cov electrode weldability thiab vuam zoo ntawm lub roj teeb, uas yog ib qho kev sim rau cov adhesion zog ntawm photovoltaic roj teeb lub cev muaj zog.<section style="margin: 0px 0px 16px;padding: 0px;outline
