Umehluko phakathi kwe-polysilicon ne-silicon ye-monocrystalline

Izinto zeSilicon ziyizinto eziyisisekelo neziwumgogodla embonini ye-semiconductor. Inqubo yokukhiqiza eyinkimbinkimbi yochungechunge lwemboni ye-semiconductor kufanele futhi iqale ekukhiqizeni izinto eziyisisekelo ze-silicon.

I-Monocrystalline silicon ukukhanya kwengadi yelanga

I-silicon ye-Monocrystalline iwuhlobo lwe-silicon eyisisekelo. Lapho i-silicon elemental encibilikisiwe iqina, ama-athomu e-silicon ahlelwa ngehele ledayimane abe ama-nuclei amaningi ekristalu. Uma lezi nuclei zekristalu zikhula zibe izinhlamvu ezinomumo ofanayo we-crystal plane, lezi zinhlamvu zizohlanganiswa ngokuhambisana ukuze zicwebezele zibe yi-silicon e-monocrystalline.

I-silicon ye-Monocrystalline inezici ezibonakalayo ze-quasi-metal futhi ine-conductivity kagesi ebuthakathaka, ekhuphuka ngokukhuphuka kwezinga lokushisa. Ngesikhathi esifanayo, i-silicon ye-monocrystalline nayo ine-conductivity ebalulekile ye-semi-electrical conductivity. I-silicon ye-Ultra-pure monocrystalline iyi-semiconductor yangaphakathi. I-conductivity ye-ultra-pure monocrystal silicon ingathuthukiswa ngokungeza i-trace ⅢA element (efana ne-boron), kanye nesemiconductor ye-silicon yohlobo lwe-P ingakhiwa. Njengokwengezwa kwezinto ezilandelwayo ⅤA (ezifana ne-phosphorus noma i-arsenic) nazo zingathuthukisa izinga lokuhamba, ukwakheka kwe-N-type silicon semiconductor.

i-polysiliconukukhanya kwelanga

I-Polysilicon iwuhlobo lwe-silicon eyisisekelo. Lapho i-silicon eyisici encibilikisiwe iqina ngaphansi kwesimo sokubanda okukhulu, ama-athomu e-silicon ahlelwa abe ama-crystal nuclei amaningi ngendlela ye-diamond lattice. Uma lezi nuclei zekristalu zikhula zibe izinhlamvu ezinomumo ohlukile wekristalu, lezi zinhlamvu ziyahlangana futhi zicwebezele zibe yi-polysilicon. Ihluke ku-silicon ye-monocrystalline, esetshenziswa kuma-electronics namaseli elanga, naku-silicon amorphous, esetshenziswa kumadivayisi amancane wefilimu kanyeamaseli elanga ukukhanya engadini

Umehluko nokuxhumana phakathi kwalokhu okubili

Ku-silicon ye-monocrystalline, uhlaka lwe-crystal frame lufana futhi lungabonakala ngokubukeka kwangaphandle okufanayo. Ku-silicon ye-monocrystalline, i-crystal lattice yesampula yonke iyaqhubeka futhi ayinayo imingcele yokusanhlamvu. Amakristalu angawodwa amakhulu ayivelakancane ngokwendalo futhi anzima ukuwenza elabhorethri (bheka ukuvuselela kabusha). Ngokuphambene, ukuma kwama-athomu ezakhiweni ze-amorphous kukhawulelwe ekuhleleni kwebanga elifushane.

Izigaba ze-Polycrystalline ne-subcrystalline zihlanganisa inani elikhulu lamakristalu amancane noma ama-microcrystals. I-Polysilicon iyimpahla eyenziwe ngamakristalu amaningi e-silicon amancane. Amaseli e-Polycrystalline angabona ukuthungwa ngomphumela wensimbi obonakalayo weshidi. Amamaki e-semiconductor afaka i-polysilicon yebanga lelanga aguqulwa abe yi-silicon ye-monocrystalline, okusho ukuthi amakristalu axhumeke ngokungahleliwe ku-polysilicon aguqulwa abe yikristalu eyodwa enkulu. I-silicon ye-Monocrystalline isetshenziselwa ukwenza amadivaysi amaningi e-silicon-based microelectronic. I-Polysilicon ingafinyelela ubumsulwa be-99.9999%. I-Ultra-pure polysilicon iphinde isetshenziswe embonini ye-semiconductor, njengezinduku ze-polysilicon ezingamamitha angu-2 ukuya kwangu-3 ubude. Embonini ye-microelectronics, i-polysilicon inezinhlelo zokusebenza kuzo zombili izikali ezinkulu nezincane. Izinqubo zokukhiqiza ze-silicon ye-monocrystalline zihlanganisa inqubo ye-Czeckorasky, ukuncibilika kwendawo kanye nenqubo ye-Bridgman.

Umehluko phakathi kwe-polysilicon ne-silicon ye-monocrystalline ubonakala ikakhulukazi ezintweni ezibonakalayo. Mayelana nezakhiwo zemishini nezikagesi, i-polysilicon ingaphansi kwe-silicon ye-monocrystalline. I-Polysilicon ingasetshenziswa njengempahla eluhlaza yokudweba i-silicon ye-monocrystalline.

1. Ngokuya nge-anisotropy yezakhiwo zemishini, izakhiwo ze-optical kanye nezakhiwo ezishisayo, ingabonakali kakhulu kune-silicon ye-monocrystalline.

2. Mayelana nezakhiwo zikagesi, ukuqhutshwa kukagesi kwe-silicon ye-polycrystalline kubaluleke kakhulu kune-silicon ye-monocrystalline, noma cishe akukho conductivity kagesi.

3, ngokomsebenzi wamakhemikhali, umehluko phakathi kwalokhu okubili mncane kakhulu, ngokuvamile sebenzisa i-polysilicon ngaphezulu