Cov roj teeb thev naus laus zis xws li TOPCon thiab HJT txuas ntxiv mus los ntawm chav kuaj mus rau cov saw hlau

1. Keeb kwm ntawm qhov xwm txheej

Ib lub rooj sib tham tsis ntev los no tau taw qhia tias raws li kev txhawb nqa yav dhau los, 50 billion yuan ntawm kev txhawb nqa hluav taws xob tauj dua tshiab yuav raug faib rau cov tuam txhab tsim hluav taws xob hauv nruab nrab. Qhov kev tshaj tawm ntawm cov nyiaj pab no yog lub teeb liab zoo rau kev txhim kho lub zog tauj dua tshiab hauv kuv lub teb chaws, uas yuav ua rau muaj kev txaus siab ntawm kev tsim hluav taws xob tshiab hauv tsev, thiab cov khoom siv hluav taws xob photovoltaic kev lag luam yuav tau txais txiaj ntsig. Cia peb tham txog qhov xwm txheej tshwj xeeb ntawm kev lag luam photovoltaic cell hauv kev nthuav dav.

Qhov thib ob, nkag siab txog cov cell photovoltaic

Photovoltaic cell yog ib daim ntawv optoelectronic semiconductor uas siv lub hnub ci los tsim hluav taws xob ncaj qha. Tsuav nws yog illuminated los ntawm lub teeb uas ua tau raws li tej yam kev mob illumination, nws muaj peev xwm instantly tso zis voltage thiab tsim tam sim no thaum muaj ib lub voj.

Raws li cov ntaub ntawv sib txawv ntawm cov khoom siv hluav taws xob, lub hnub ci tuaj yeem muab faib ua crystalline silicon solar cells thiab nyias zaj duab xis hnub ci. Crystalline silicon cells tuaj yeem muab faib ua monocrystalline silicon cells thiab polycrystalline silicon cells, ntawm cov cell monocrystalline silicon ntxiv muab faib ua P-type cells thiab N-type cells. Tam sim no, feem ntau siv monocrystalline PERC hlwb yog P-hom monocrystalline silicon hlwb, thaum lub hnub ci cell tshiab xws li TOPCon, heterojunction, thiab IBC feem ntau xa mus rau N-hom monocrystalline silicon cells.

Thib peb, subdivide tus khiav

1.TOPCon roj teeb

TOPCon roj teeb technology, uas yog lub tunneling oxide txheej passivation hu rau technology, nws cov qauv roj teeb yog ib tug N-hom silicon substrate roj teeb, ib txheej ntawm ultra-nyias silicon oxide yog npaj rau sab nraum qab ntawm lub roj teeb, thiab ces ib tug nyias txheej ntawm doped silicon. yog tso. Lub passivation tiv tauj qauv yog tsim, uas zoo txo ​​deg recombination thiab hlau hu recombination, txhim kho lub qhib Circuit Court voltage thiab luv luv Circuit Court tam sim no ntawm roj teeb, thiab txhim kho lub roj teeb efficiency.

1) LPCVD yog cov txheej txheem tseem ceeb tam sim no tsim los ntawm TOPCon

Tam sim no, TOPCon hlwb muaj 4 cov txheej txheem kev lag luam sib txawv, uas yog: LPCVD los npaj cov yeeb yaj kiab polysilicon ua ke nrog cov txheej txheem tag nrho diffusion; LPCVD los npaj polysilicon zaj duab xis ua ke nrog boron expansion thiab ion implantation phosphorus txheej txheem; PECVD los npaj cov yeeb yaj kiab polysilicon thiab cov txheej txheem hauv-situ doping; PVD npaj cov yeeb yaj kiab polysilicon thiab cov txheej txheem doping hauv-situ. Ntawm lawv, LPCVD thev naus laus zis yog qhov paub tab thiab tau ua tiav ntau lawm, thiab cov khoom siv hauv zos yog qhov zoo tshaj plaws, tab sis winding plating thiab qeeb zaj duab xis sib sau ceev tseem yog cov teeb meem tseem ceeb ntawm cov txheej txheem tam sim no.

Lub npe tag nrho ntawm LPCVD thev naus laus zis txoj kev yog cov tshuaj tsis tshua muaj tshuaj vapor deposition txoj kev. Qhov zoo ntawm cov cuab yeej no yog cov cuab yeej paub tab, kev sib koom ua ke siab, kev tsim cov yeeb yaj kiab zoo, cov cuab yeej loj, thiab kev tswj tau yooj yim thiab yooj yim; tab sis nws yog ib qho nyuaj kom muaj qeeb txheej ceev, tsis tshua muaj zaj duab xis tsim tus nqi, thiab theem nrab Doping, wrapping, loj deposition ntawm quartz qhov chaw, thiab lwm yam. LPCVD technology yog cov feem ntau dav txais thiab tsuas yog technology uas tau ua lag luam nyob rau hauv loj teev.

2) Cov neeg tsim khoom nrawm TOPCon kev npaj muaj peev xwm thiab ua tiav cov txheej txheem kev lag luam. Hauv ob xyoos dhau los, cov tuam txhab lag luam hauv tsev tau npaj tseg qhov chaw rau TOPCon kev hloov pauv rau cov kab tshiab PERC rau kev hloov kho tshiab. Lub peev xwm ntawm PERC ntawm ntau lub tuam txhab thawj theem tau maj mam tso tseg, thiab cov phiaj xwm nthuav dav tam sim no kuj tau hloov mus rau kev tsim kho ntawm N-hom tshuab cov kab ntau lawm. Nkag mus rau lub quarter thib ob, TOPCon muaj peev xwm ntau lawm ntawm ntau lub tuam txhab suav nrog Jinko tau pib tso tawm, thiab nws xav tias yuav txaus siab rau cov khoom siv thev naus laus zis.

2. HJT roj teeb

HJT hlwb yog ua los ntawm crystalline silicon (c Si) thiab amorphous silicon ( Si ) nyias zaj duab xis, combining lub dual zoo ntawm crystalline silicon hnub ci hlwb thiab nyias zaj duab xis technology, vim hais tias cov nyias zaj duab xis muaj cov yam ntxwv ntawm lub teeb pom kev zoo thiab passivation zoo heev. HJT tau tsim los rau 47 xyoo. Nrog rau iteration ntawm thev naus laus zis thiab kev txhim kho ntawm kev hloov dua siab tshiab, HJT roj teeb tau nkag mus rau theem ntawm kev lag luam hauv tsev.

Qhov zoo ntawm HJT hlwb yog tias cov txheej txheem ntws yog luv luv thiab kev hloov dua siab tshiab yog siab. Cov txheej txheem roj teeb HJT feem ntau suav nrog 4 qhov txuas, uas tsawg dua PERC (10) thiab TOPCON (12-13); Tsis tas li ntawd, kev hloov dua siab tshiab ntawm HJT superimposed IBC thiab perovskite tuaj yeem nce mus rau ntau dua 30 feem pua ​​​​nyob rau yav tom ntej.

Txoj kev txo nqi ntawm HJT yog qhov tseeb, thiab tus nqi ntawm HJT hauv 22 xyoo yuav tsum qis dua PERC. Tus nqi ntawm HJT roj teeb yog 0.18 yuan ib watt siab dua li ntawm PERC, thiab 94 feem pua ​​ntawm cov nqi nce yog nyob rau hauv cov nqi uas tsis yog-silicon. Nyob rau hauv lub neej yav tom ntej, HJT tus nqi txo feem ntau yog nyob ntawm kev txo qis ntawm silicon, txo tus nqi muab tshuaj txhuam nyiaj, lub hom phiaj hauv zos, thiab cov khoom siv txo nqi.

3. IBC roj teeb

IBC yog hais txog kev sib txuas lus rov qab siv hluav taws xob thev naus laus zis, thiab kev sib cuag electrodes ntawm P / N hlws ris, lub substrate thiab cov emitter yog ua nyob rau sab nraum qab ntawm lub roj teeb nyob rau hauv ib tug interdigitated zoo. IBC hlwb muaj kev hloov siab los ntseeg siab thiab zoo nkauj zoo nkauj, tshwj xeeb tshaj yog tsim rau kev sib koom ua ke hauv tsev photovoltaic, thiab muaj kev lag luam zoo. Txawm hais tias qhov zoo ntawm IBC hlwb yog qhov zoo heev, cov txheej txheem ntawm IBC hlwb yog qhov nyuaj, thiab semiconductor technologies xws li lub qhov ncauj qhov ntswg thiab photolithography yog siv ntau zaus, thiab tus nqi yog yuav luag ob npaug ntawm cov pa cell.

Vim yog qhov zoo sib xws ntawm IBC roj teeb qauv, peb txoj hauv kev tseem ceeb tau maj mam tsim: 1) cov txheej txheem roj teeb IBC classic sawv cev los ntawm SunPower; 2) POLO-IBC (TBC) roj teeb txheej txheem sawv cev los ntawm ISFH; 3) Kaneka roj teeb txheej txheem Tus neeg sawv cev HBC cell txheej txheem (IBC-SHJ). Raws li cov txiaj ntsig ntawm kev sim Kaneka xyoo 2017, qhov kev hloov pauv tam sim no ntawm IBC-SHJ (HJT) hlwb tuaj yeem ncav cuag 26.7 feem pua, uas yog siab dua qhov kev sim ua tau zoo ntawm TOPCon thiab HJT hlwb.

IBC belongs rau txoj kev siv thev naus laus zis, thiab R&D sim tsim cov qauv tsim tau raug tsim tawm. Tam sim no, IBC / HBC roj teeb txheej txheem tsim khoom yog qhov nyuaj, cov txheej txheem kev ua haujlwm siab, thiab cov nqi tsim khoom yog siab, uas belongs rau txoj hauv kev hauv kev tshawb fawb thiab kev tsim kho. Cov tuam txhab tsim khoom loj tshaj plaws ntawm IBC thev naus laus zis hauv ntiaj teb yog SunPower thiab LG.