Piv nrog monocrystalline silicon solar cells, polycrystalline silicon solar cells muaj qis dua qhov yuav tsum tau ua rau purity ntawm raw cov ntaub ntawv thiab muaj ntau qhov chaw ntawm raw cov ntaub ntawv, yog li tus nqi qis dua li ntawm monocrystalline silicon solar cells. Txoj kev npaj ntawm polycrystalline silicon hnub ci hlwb kuj dav heev, xws li Siemens txoj kev, silane txoj kev, fluidized txaj txoj kev, sodium txo txoj kev, directional solidification txoj kev thiab lub tshuab nqus tsev evaporation thiab impurity tshem tawm txoj kev, thiab lwm yam., thiab siv tau ib tug siv lead ua silicon ua. technology, xws li corrosion emission junction, Hlau gettering, corroded kev ntxhib los mos, nto thiab lub cev passivation, refinement ntawm hlau rooj vag electrode, thiab lwm yam cov nqi tsim khoom. Tab sis nws kuj muaj nws tus kheej qhov tsis txaus, xws li ntau yam siv lead ua lattice defects, ua rau txo qis kev hloov dua siab tshiab dua li monocrystalline silicon hnub ci hlwb. Yog li ntawd, rau polycrystalline silicon hnub ci hlwb, kev tshawb fawb tsom mus rau kev txhim kho cov txheej txheem polycrystalline silicon ntau lawm thiab txo qhov tsis xws luag hauv polycrystalline silicon ntau lawm txheej txheem los txhim kho qhov zoo qub ntawm silicon wafer. Tsis tas li ntawd, kev tsim cov txheej txheem ntawm polycrystalline silicon hnub ci hlwb yuav tsum yooj yim, thiab cov nqi tsim khoom ntawm polycrystalline silicon hnub ci hlwb yuav tsum raug txo kom tsawg thiaj li ua kom cov txheej txheem kev loj hlob ntawm polycrystalline silicon solar cells.
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