PERC Technology thiab N-Hom Hnub Ci Vaj Huam Sib Luag: Kev Sib Txuas Zoo Tshaj Plaws rau Kev Siv Hluav Taws Xob
Raws li lub ntiaj teb nrhiav kev hloov pauv mus rau cov khoom siv hluav taws xob tauj dua tshiab, lub hnub ci zog tau tshwm sim los ua tus neeg sib tw ua thawj coj vim nws txoj kev ntseeg siab thiab kev ruaj khov. Txawm li cas los xij, txawm tias muaj peev xwm loj heev ntawm lub hnub ci zog, tseem muaj cov teeb meem uas yuav tsum tau daws. Ib qho ntawm cov teeb meem tseem ceeb uas tau ntsib los ntawm kev lag luam hnub ci yog qhov ua tau zoo ntawm cov hnub ci vaj huam sib luag. Txhawm rau txhim kho kev ua tau zoo, cov kws tshawb fawb tau tsim cov thev naus laus zis tshiab hu ua Passivated Emitter thiab Rear Cell (PERC), uas tau txais kev saib xyuas ntau hauv xyoo tas los no. Lwm cov thev naus laus zis uas tau tshwm sim los ua qhov muaj txiaj ntsig zoo rau PERC yog N-hom hnub ci hlwb. Daim ntawv no yuav muab cov ncauj lus kom ntxaws sib piv ntawm PERC thev naus laus zis thiab N-hom hnub ci hlwb, tshawb nrhiav lawv qhov sib xws, qhov sib txawv, thiab muaj peev xwm rau kev lag luam siv.
Txheej txheem cej luam ntawm PERC Technology
PERC thev naus laus zis yog qhov kev nce qib tsis ntev los no hauv kev lag luam hnub ci uas muaj peev xwm ua kom cov hnub ci vaj huam sib luag nce mus txog 25%. Nws yog ib qho kev hloov kho ntawm cov pa hluav taws xob silicon hnub ci, qhov twg ib txheej ntawm cov khoom siv passivating ntxiv rau hauv qab ntawm lub xov tooj ntawm tes. Cov txheej no ua tau zoo txo cov kev poob rov qab thiab txhim kho kev ua haujlwm ntawm lub hnub ci vaj huam sib luag.
Ib qho txiaj ntsig tseem ceeb ntawm PERC thev naus laus zis yog nws lub peev xwm los ntes ntau cov photons. Lub nraub qaum-sab passivation txheej ntxiv rau cov hlwb ua rau nws tuaj yeem ntes ntau lub teeb los ntawm kev xav rov qab rau hauv lub hnub ci cell. Qhov no ua rau cov hlwb kom ua tiav qib siab dua ntawm kev ua haujlwm yam tsis tas yuav nce lub thickness ntawm wafer. Tsis tas li ntawd, PERC thev naus laus zis tau txais txiaj ntsig zoo vim nws tuaj yeem siv rau cov txheej txheem tsim khoom uas twb muaj lawm, tshem tawm qhov xav tau ntawm cov khoom siv kim.
Txheej txheem cej luam ntawm N-hom Solar Cells
N-hom hnub ci hlwb yog lwm txoj hauv kev rau P-hom hlwb, uas yog lub hauv paus tseem ceeb ntawm lub hnub ci kev lag luam rau ntau xyoo lawm. Tsis zoo li P-hom hlwb, uas siv boron doping, N-hom hlwb siv phosphorous doping. Qhov no hloov cov khoom ntawm silicon, ua rau nws tsim hluav taws xob ntau dua thiab muaj lub neej ntev dua. Tsis tas li ntawd, N-hom hlwb muaj qhov txo qis ntawm kev degradation nyob rau lub sijhawm, ua rau lawv muaj zog dua thiab kav ntev.
Ib qho txiaj ntsig tseem ceeb tshaj plaws ntawm N-hom hlwb yog tias lawv muaj peev xwm ua tau hluav taws xob txawm tias nyob rau hauv cov teeb pom kev zoo. Qhov no yog vim hais tias N-hom hlwb muaj qib siab dua ntawm kev tiv thaiv boron-oxygen tsis xws luag, uas txo qis kev ua haujlwm ntawm P-hom hlwb hauv qab lub teeb qis. Tsis tas li ntawd, N-hom hlwb muaj tsawg dua rau lub teeb-induced degradation, uas kuj txhim kho lawv lub neej.
Kev sib piv ntawm PERC Technology thiab N-hom Solar Cells
Ob leeg PERC thev naus laus zis thiab N-hom hlwb muab kev txhim kho tseem ceeb tshaj li cov qauv P-hom hlwb. Txawm li cas los xij, muaj qee qhov sib txawv tseem ceeb ntawm ob lub thev naus laus zis. Ib qho ntawm cov txiaj ntsig tseem ceeb ntawm PERC thev naus laus zis yog tias cov txheej txheem passivation ntawm lub nraub qaum yuav txo qis cov kev sib txuas ua ke, ua rau muaj txiaj ntsig ntau ntxiv. Tsis tas li ntawd, cov txheej txheem passivation qhia txog photons rov qab rau hauv lub cell, ua rau muaj kev nqus ntau dua thiab ua haujlwm zoo.
Ntawm qhov tod tes, N-hom hlwb muaj peev xwm tsim hluav taws xob txawm tias nyob rau hauv qhov chaw tsis muaj teeb pom kev zoo, ua rau lawv haum rau cov cheeb tsam uas muaj huab cua huab cua thiab overcast. Lawv kuj muaj zog dua thiab kav ntev dua vim lawv tsis kam mus rau degradation. Tsis tas li ntawd, N-hom hlwb muaj peev xwm ua tiav qib siab ntawm kev ua haujlwm zoo dua li P-hom hlwb, uas yog cov khoom lag luam hnub ci tam sim no.
Thaum nws los txog rau kev lag luam siv, PERC thev naus laus zis thiab N-hom hlwb muaj kev lag luam sib txawv. PERC thev naus laus zis tshwj xeeb yog tsim rau cov hnub ci loj loj uas yuav tsum muaj cov khoom tsim tawm, vim tias nws tuaj yeem raug nqi siv rau cov txheej txheem tsim khoom uas twb muaj lawm. Hauv qhov sib piv, N-hom hlwb yog qhov zoo tshaj plaws rau kev teeb tsa me me, tshwj xeeb yog cov tsev nyob thiab cov tsev lag luam uas cov teeb pom kev qis tuaj yeem yog qhov nyuaj heev.
Xaus
Kev lag luam hnub ci tau hloov zuj zus mus tas li, thiab cov thev naus laus zis tshiab xws li PERC thiab N-hom hlwb tau tshwm sim los txhim kho kev ua tau zoo, kev ntseeg siab, thiab kev ua neej nyob ntawm hnub ci vaj huam sib luag. Thaum ob lub thev naus laus zis muaj kev txhim kho tseem ceeb ntawm P-hom hlwb, lawv muaj cov yam ntxwv tshwj xeeb uas ua rau lawv tsim nyog rau ntau daim ntawv thov.
Raws li lub ntiaj teb txuas ntxiv hloov mus rau lub zog tauj dua tshiab, cov thev naus laus zis no xav tias yuav muaj ntau dua, muab cov neeg siv khoom xaiv ntau dua rau hnub ci zog. Nws txoj kev xav yav tom ntej suav nrog txoj hauv kev zoo thiab muaj kev cia siab, ib qho uas qhia txog kev huv, ntsuab dua, thiab muaj txiaj ntsig zoo rau kev tsim hluav taws xob.