Dab tsi yog qhov txawv ntawm polysilicon thiab crystallized silicon?
Tso lus
Dab tsi yog qhov txawv ntawm monocrystalline silicon thiab polycrystalline silicon?
| Ntiag tug | Monocrystalline Silicon | Polycrrystalline silicon |
|---|---|---|
| Crystal Qauv | Nruam ib ce-crystal tattice | Ntau yam muaju nrog cov ciaj ciam nplej |
| Txoj kev raug | Czochralski cov txheej txheem (qeeb, muaj kev coj dawb huv) | Casting Molten Silicon (sai dua, raug nqi zog) |
| Efficiency (hnub ci) | 15-24% (Ntau Zog Hloov Siab) | 13-18% (qis dua vim cov nplej tsis xws luag) |
| Cov Khoom Siv Pov Tseg | ~ 50% poob thaum txiav kev cuam tshuam thooj cylindrical | Minimal khib nyiab (ua kom ncaj qha) |
| Kev tshwm sim | Tsis zoo nkauj dub dub hue | Speckled Xiav |
Dab tsi yog qhov txawv ntawm polysilicon thiab crystallized silicon?
Piav qhia: "Polysilicon" vs. "crystallized silicon"
Polysilicon (Poly-Si): Txhais nrogpolycrrystalline silicon, xa mus rau Silicon solidified rau ntau cov nplej ua kom yooj yim.
Crystallized Silicon: Tsis yog lub sijhawm kawm ua haujlwm; feem ntau cuam tshuam ib qhomonocrystalline(tag nrho crystallized) lossispolycrrystalline(ib nrab crystallized) silicon. Muaj cov ntsiab lus siv "polycrystalline silicon" tshwj xeeb.
Dab tsi yog cov khoom siv raw rau polycrystalline silicon?
COV KHOOM SIV RAW RAU POLYCRYSTALLINE NTAU
Cov ntsiab lus tseem ceeb muaj xws li:
Metallurgical-Qib Silicon (Mg-Si): ~ 98% Cov ntshiab, muab tau los ntawm Quartzite txo qis hauv Arc rauv.
Tshuaj Purifiers: Chlorine compounds (piv txwv li, sihcl₃) rau siemens txheej txheem ua kom zoo.
Noob muaju: Tawg los pib tswj cov solidification hauv kev ua pwm.
Puas yog polycrystalline silicon coj?
Hluav taws xob cuam tshuam ntawm polycrystalline silicon
Xam cov xeev: Ntshiab poly-si yog aSemiconductorCoj raws li lub insulator ntawm qhov kawg tab sis nce nrog kev ua haujlwm nrog tshav kub / lub teeb kom zoo nkauj.
Doping kev cia siab: Condownity yog tunable:
Phosphorus dopingN-hom (hluav taws xob cooj)
Boron doping→ p-hom (qhov conduction)
Lis Caj Dab Muaj: Crystal cuam tshuam rau cov neeg nqa khoom tawg, txo mus mustility piv rau mono-si. Conduction ntawm thaj tsam ua raws li Panole-Frenkel emission emission nyob rau hauv cov siab.
Kev Ntsuas Cov Ntsiab
Kev siv hluav taws xob: Mono-Si: ~ 1,400 cm² / vanm|Poly-Si:<800 cm²/V·s
Thermal ruaj khov: Poly-si khaws cov qauv txheej txheem kev ntseeg txog li 1,400 degree, tseem ceeb rau cov txheej txheem siab-temp.
Kev lag luam DOMINCE: Poly-Si constitutes >80% ntawm cov hnub ci-qib silicon ntim vim muaj ntau lawm.
Mono-Si cov txiaj ntsig zoo tshaj plaws ua rau nws siv hauv cov ntawv thov cov khoom siv hluav taws xob thiab chaw POLY-SI uas muaj kev coj ua uas yuav muaj tsav.
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