Teeb meem tseem ceeb:
1. Hnub ci cell yog dab tsi?
Hnub ci lub hlwb yog semiconductor devices uas hloov hnub ci hluav taws xob ncaj qha mus rau hluav taws xob lub zog raws li cov nyhuv ntawm photovoltaic ntawm semiconductors. Cov kab mob qoob loo muaj hnub nyoog ntawm cov khoom hauv qab no: cov kab mob hauv lub nruab hnub: monocrystalline silicon solar cells, polycrystalline silicon solar cells, amorphous silicon solar cells, thiab tam sim no muaj cov kab mob cadmium cadmium, tooj liab indium selenide roj teeb, nano titanium oxide sensitized roj teeb, thiab polycrystalline silicon. Nyias zaj qoob loo hnub ci thiab lub cev qia paj hlwb. Crystalline silicon (ib qho siv lead ua, polycrystalline) solar hlwb yuav tsum muaj cov ntaub ntawv purity silicon, feem ntau yuav tsum tau purity tsawg kawg 99.99998%, uas yog, mus txog 2 lub impurity atoms raug tso cai nyob rau hauv 10 lab silicon atoms. Cov khoom siv silicon yog ua los ntawm silicon dioxide (SiO2, los yog xuab zeb), uas yog yaj thiab muab tshem tawm kom tau cov coarse silicon. Los ntawm silicon dioxide mus rau solar cell wafers, uas muaj ntau hom kev lag luam thiab cov txheej txheem, feem ntau muab faib ua: silica -> cov khoom paug siab silicon -> siab purity trichlorosilane -> siab purity polysilicon-> ib leeg siv lead ua silicon qws los sis Polycrystalline silicon ntses -> silicon wafers -> hnub ci hlwb.
2. Lub vaj huam sib luag monocrystalline silicon solar panels yog dab tsi?
Monocrystalline silicon solar hlwb yog tsuas manufactured siv crystal silicon nkaus xwb, thiab cov kua qia siv ua kua crystal muaj cov conversion siab tshaj piv rau lwm hom qoob loo. Lub sijhawm thaum ntxov, monocrystalline silicon solar cells nyob hauv feem ntau ntawm kev ua lag luam, thiab tom qab reclaiming polysilicon nyob rau hauv 1998, cov kev qhia ua lag luam nyob hauv ob. Vim yog qhov tsis zoo ntawm cov ntaub qhwv raw polysilicon nyob rau hauv xyoo tsis ntev los no, qhov sib koom ua lag luam ntawm monocrystalline silicon tau nce me ntsis txij li thaum 2004, thiab lub hlwb pom ntawm lub khw tam sim no muaj feem ntau monocrystalline silicon.
Lub pob zeb ntawm silicon ntawm silicon solar cell yog zoo meej, nws kho qhov muag, hluav taws xob thiab cov khoom siv dag zog yog qhov teeb meem zoo heev, thiab xim ntawm lub roj teeb feem ntau dub los yog tsaus, uas yog qhov tshwj xeeb tshaj yog tsim rau kev txiav me me rau cov khoom me me.
Kev hloov dua siab tshiab ntawm cov xuab zeb monocrystalline silicon nyob hauv kev kuaj yog 24.7%. Kev hloov dua siab tshiab ntawm kev lag luam yog 10% -18%.
Monocrystalline silicon solar cells yog feem ntau cylindrical puab vim tsim teeb meem, thiab tom qab raug slicing-> tu-> diffusion --- tshem tawm rov qab - ua electrode-> corrosion --------- Ua haujlwm zaj duab xis xws li zaj yeeb yaj kiab los ua cov khoom tiav. Feem ntau, cov plaub lub kaum pob zeb ntawm lub hnub ci nruab nrab ntawm monocrystalline silicon yog sib npaug. Lub thickness ntawm monocrystalline silicon solar hlwb feem ntau yog 200uM-350uM tuab. Cov qauv kev sib tw tam sim no yog mus rau ultra-thin thiab high-efficiency. German solar cell manufacturers tau lees paus tias 40uM tuab ib leeg siv lead ua silicon tuaj yeem ua tau 20% ntawm qhov kev hloov dua siab tshiab.
3. Lub vaj huam sib luag polycrystalline silicon solar panels
Nyob rau hauv ntau lawm ntawm polycrystalline silicon solar hlwb, lub siab-purity silicon raws li ib raw khoom tsis purified mus rau ib qho siv lead ua, tab sis yog yaj-cam khwb cia rau hauv ib lub pob zeb silicon ingot, thiab ces tiav rau hauv ib daim ntawv nyias thiab kev ua zoo sib xws.
Polycrystalline silicon yog yooj yim txheeb tau los ntawm nws qhov chaw. Dab flakes muaj li ntawm ntau thaj chaw siv lead ua siv ntau qhov sib txawv (cov iav yog crystallized rau saum npoo). Lub tshuab hluav taws xob yog tsim los ntawm tib lub kwj deg raws li tib lub siv lead ua, tab sis cov dab floss yog tsim los ntawm cov khoom sib txawv ntawm qhov ntau thiab tsawg dua. Nyob rau hauv lub lis piam pawg, qhov kev hloov tshiab ntawm lub ciam teb ntawm lub ciam teb tuaj yeem yooj yim, yog li kev hloov pauv ntawm polycrystalline silicon yog tus qis dua. Tib lub sijhawm, qhov kho qhov muag, hluav taws xob thiab cov khoom siv dag zog ntawm polycrystalline silicon tsis zoo li monocrystalline silicon solar cells.
Kev ua haujlwm siab tshaj plaws ntawm polycrystalline silicon solar cell laboratory yog 20.3%, thiab kev lag luam yog feem ntau yog 10% -16%. Lub polycrystalline silicon solar cell yog ib daim square square, uas muaj lub siab tshaj cov nqi thaum tsim hnub ci modules, thiab cov khoom muaj kuj zoo nkauj.
Lub thickness ntawm polycrystalline silicon solar hlwb feem ntau yog 200uM-300uM tuab. Ib co tuam ntxhab tau tsim tau 180uM tuab hnub ci hlwb, thiab tau tsim thinner txuag cov ntaub ntawv pov thawj kim heev.
4. Yuav ua li cas kom txawv ntawm monocrystalline silicon thiab polycrystalline silicon
Qhov ntau-wafer yog ib lub xwmfab lossis duab qaum nrog ib txoj kab. Cov plaub fab ntawm tus Crystal muaj ib chamfer uas nyob ze rau lub voj voog. Qhov nruab nrab ntawm ib qho kev tiv thaiv nrog cov nyiaj-zoo li lub qhov yog ib qho Crystal, uas tau pom ntawm ib nrais muag.