Qhia ntau hom hlwb

1. ^{Taw qhia rau Cells}

(1) Txheej txheem cej luam:Cells yog cov khoom tseem ceeb ntawmphotovoltaic zog tsim, thiab lawv txoj kev thiab cov txheej txheem ncaj qha cuam tshuam rau lub zog tsim hluav taws xob thiab kev pabcuam lub neej ntawm photovoltaic modules.Photovoltaic hlwb yog nyob rau hauv nruab nrab ncav cuag ntawm lub photovoltaic kev lag luam saw.Lawv yog cov ntawv nyias nyias uas tuaj yeem hloov lub hnub lub teeb lub zog rau hauv lub zog hluav taws xob tau txais los ntawm kev ua ib leeg / poly crystalline silicon wafers.

Lub hauv paus ntsiab lus ntawmphotovoltaic zog tsimlos ntawm cov nyhuv photoelectric ntawm semiconductors.Los ntawm illumination, muaj peev xwm sib txawv ntawm qhov sib txawv ntawm hauv homogeneous semiconductors lossis semiconductors ua ke nrog hlau.Nws yog hloov los ntawm photons (lub teeb nthwv dej) mus rau hauv electrons thiab lub teeb lub zog mus rau hauv hluav taws xob lub zog los tsim ib tug voltage.thiab txheej txheem tam sim no.Cov silicon wafers tsim nyob rau hauv qhov txuas txuas txuas tsis tuaj yeem ua hluav taws xob, thiab cov hnub ci ua tiav txiav txim siab lub zog tsim hluav taws xob ntawm photovoltaic modules.

(2) Classification:Los ntawm kev pom ntawm hom substrate, cov hlwb tuaj yeem muab faib ua ob hom:P-type cells thiab N-type cells.Doping boron hauv silicon crystals tuaj yeem ua P-hom semiconductors;doping phosphorus tuaj yeem ua N-hom semiconductors.Cov khoom siv raw ntawm P-hom roj teeb yog P-hom silicon wafer (doped nrog boron), thiab cov khoom siv ntawm N-hom roj teeb yog N-hom silicon wafer (doped nrog phosphorus).P-hom hlwb feem ntau suav nrog BSF (cov pa txhuas txhuas rov qab ntawm tes) thiab PERC (passivated emitter thiab rear cell);N-hom hlwb yog tam sim no ntau lub ntsiab technologies yogTOPCon(tunneling oxide txheej passivation hu) thiab HJT (intrinsic nyias zaj duab xis Hetero hlws ris).Lub N-hom roj teeb ua hluav taws xob los ntawm electrons, thiab lub teeb-induced attenuation tshwm sim los ntawm boron-oxygen atom khub yog tsawg, yog li ntawd lub photoelectric conversion efficiency siab dua.

3. Taw qhia txog PERC roj teeb

(1) Txheej txheem cej luam: Lub npe tag nrho ntawm PERC roj teeb yog "emitter thiab rov qab passivation roj teeb", uas yog ib txwm muab los ntawm AL-BSF qauv ntawm cov pa roj teeb txhuas rov qab.Los ntawm cov qauv kev pom, ob qho tib si zoo sib xws, thiab PERC roj teeb tsuas muaj ib txheej rov qab passivation ntau dua li BSF roj teeb (cov roj teeb tiam dhau los).Kev tsim ntawm lub nraub qaum passivation pawg tso cai rau PERC cell los txo qhov kev sib txuas ceev ntawm sab nraub qaum thaum txhim kho lub teeb pom kev ntawm sab nraub qaum thiab txhim kho kev hloov pauv ntawm lub cell.

(2) Keeb kwm kev loj hlob: Txij li xyoo 2015, cov roj teeb hauv tsev PERC tau nkag mus rau theem ntawm kev loj hlob sai.Nyob rau hauv 2015, domestic PERC roj teeb muaj peev xwm mus txog thawj qhov chaw nyob rau hauv lub ntiaj teb no, accounting rau 35% ntawm lub ntiaj teb no PERC roj teeb muaj peev xwm.Hauv xyoo 2016, "Photovoltaic Top Runner Program" tau siv los ntawm National Energy Administration tau pib ua haujlwm ntawm kev tsim khoom loj ntawm PERC hlwb hauv Suav teb, nrog qhov nruab nrab ntawm 20.5%.2017 yog ib qho kev hloov pauv rau kev lag luam sib koom ntawmphotovoltaic cell.Kev lag luam sib faib ntawm cov pa roj ntsha pib poob qis.Kev lag luam hauv PERC ntawm tes sib koom tau nce mus rau 15%, thiab nws cov peev txheej tsim tau nce mus rau 28.9GW;

Txij li xyoo 2018, PERC roj teeb tau dhau los ua lub hauv paus hauv kev ua lag luam.Nyob rau hauv 2019, qhov loj-scale zus tau tej cov PERC hlwb yuav ceev, nrog ib tug loj ntau lawm efficiency ntawm 22.3%, accounting rau ntau tshaj 50% ntawm cov muaj peev xwm ntau lawm, officially tshaj BSF hlwb los ua lub mainstream photovoltaic cell technology.Raws li CPIA kwv yees, los ntawm 2022, qhov kev ua haujlwm loj ntawm PERC hlwb yuav ncav cuag 23.3%, thiab lub peev xwm ntau lawm yuav suav txog ntau dua 80%, thiab kev ua lag luam feem tseem yuav yog thawj.

4. TOPCon roj teeb

(1) Nqe lus piav qhia:TOPCon roj teeb, uas yog, tunneling oxide txheej passivation hu xovtooj, yog npaj nyob rau sab nraum qab ntawm lub roj teeb nrog ib tug ultra-thin tunneling oxide txheej thiab ib txheej ntawm heev doped polysilicon nyias txheej, uas ua ke tsim ib tug passivation hu qauv.Nyob rau hauv 2013, nws tau thov los ntawm lub koom haum Fraunhofer nyob rau hauv lub teb chaws Yelemees.Piv nrog PERC hlwb, ib qho yog siv n-hom silicon ua substrate.Piv nrog p-type silicon cells, n-type silicon muaj lub neej ua haujlwm tsawg dua, kev hloov pauv siab, thiab lub teeb tsis muaj zog.Qhov thib ob yog los npaj ib txheej txheej passivation (ultra-thin silicon oxide SiO2 thiab doped poly silicon nyias txheej Poly-Si) nyob rau sab nraum qab los tsim ib qho kev sib cuag passivation qauv uas cais cov cheeb tsam doped los ntawm cov hlau, uas tuaj yeem txo qis sab nraub qaum. nto.Cov neeg nqa khoom tsawg tsawg recombination tshwm sim ntawm qhov chaw thiab cov hlau txhim kho kev hloov pauv ntawm lub roj teeb.