polysilicon yog ib daim ntawv ntawm cov khoom siv silicon, uas yog cov khoom siv semiconductor uas muaj ntau lub pob zeb me me sib txuas ua ke.
Thaum polysilicon solidifies nyob rau hauv supercooling tej yam kev mob, silicon atoms teem nyob rau hauv lub pob zeb diamond lattice daim ntawv rau hauv ntau siv lead ua nuclei. Yog tias cov nuclei loj hlob mus rau hauv cov nplej nrog cov kev coj ua sib txawv, cov nplej no ua ke kom crystallize rau hauv polysilicon. polysilicon yog cov khoom siv ncaj qha rau kev tsim cov monocrystalline silicon thiab ua haujlwm raws li cov ntaub ntawv xov xwm hluav taws xob rau cov khoom siv semiconductor niaj hnub xws li kev txawj ntse, kev tswj tsis siv neeg, cov ntaub ntawv ua, thiab kev hloov pauv photoelectric. Txoj kev npaj ntawm polysilicon feem ntau yog muab cov silicon yaj nyob rau hauv lub quartz crucible thiab ces maj mam txias nws los ua ntau yam me me crystals thaum lub sij hawm solidification txheej txheem. Feem ntau, qhov loj ntawm polysilicon crystals npaj me dua li ntawm monocrystalline silicon, yog li lawv cov khoom siv hluav taws xob thiab kho qhov muag yuav txawv me ntsis. Piv nrog monocrystalline silicon, polysilicon muaj cov nqi tsim khoom qis dua thiab ntau dua photoelectric conversion efficiency, ua rau nws siv dav hauv kev tsim cov hnub ci vaj huam sib luag. Tsis tas li ntawd, polysilicon kuj tuaj yeem siv rau hauv kev tsim khoom ntawm cov khoom siv semiconductor thiab kev sib xyaw ua ke.
| Qib | Si: Min | Fe: Max | Al: Max | Ca: Max |
| ib 3303 | 99% | 0.3% | 0.3% | 0.03% |
| 2202 ib | 99% | 0.2% | 0.2% | 0.02% |
| 1101 | 99% | 0.1% | 0.1% | 0.01% |
Lub sij hawm xa tuaj: Sep-18-2024
