Umehluko phakathi kwe-polysilicon ne-monocrystalline silicon

Izinto ze-silicon ziyinto eyisisekelo neyinhloko embonini ye-semiconductor. Inqubo yokukhiqiza eyinkimbinkimbi yochungechunge lwemboni ye-semiconductor kufanele futhi iqale ekukhiqizweni kwezinto ze-silicon eziyisisekelo.

Isibani sengadi yelanga se-silicon esinombala ocwebezelayo

I-silicon e-monocrystalline iwuhlobo lwe-silicon e-elemental. Lapho i-silicon e-elemental encibilikisiwe iqina, ama-athomu e-silicon ahlelwe nge-lattice yedayimane abe yi-nuclei eziningi ze-crystal. Uma la ma-nuclei e-crystal ekhula abe yizinhlamvu ezinesimo esifanayo se-crystal plane, lawa ma-grain azohlanganiswa ndawonye ukuze acwebezele abe yi-silicon e-monocrystalline.

I-silicon e-monocrystalline inezakhiwo ezibonakalayo ze-quasi-metal futhi inomoya obuthakathaka kagesi, okhuphuka ngokushisa okwandayo. Ngesikhathi esifanayo, i-silicon e-monocrystalline nayo inomoya obalulekile we-semi-electric. I-silicon e-monocrystalline e-Ultra-pure iyi-semiconductor yangaphakathi. Umoya ophakeme we-silicon e-monocrystal e-ultra-pure ungathuthukiswa ngokungeza izakhi ze-trace ⅢA (njenge-boron), kanye ne-silicon semiconductor ye-P-type ingakhiwa. Njengokungezwa kwezakhi ze-trace ⅤA (njenge-phosphorus noma i-arsenic) kungathuthukisa nezinga lomoya ophakeme, ukwakheka kwe-silicon semiconductor ye-N-type.

i-polysiliconukukhanya kwelanga

I-Polysilicon uhlobo lwe-silicon eyisisekelo. Lapho i-silicon eyisisekelo encibilikisiwe iqina ngaphansi kwesimo se-supercooling, ama-athomu e-silicon ahlelwa abe ama-nuclei amaningi e-crystal ngesimo se-lattice yedayimane. Uma la ma-nuclei e-crystal ekhula abe ama-grain ane-orientation ehlukile ye-crystal, lawa ma-grain ahlangana futhi acwebezele abe yi-polysilicon. Ihlukile ku-silicon e-monocrystalline, esetshenziswa kuma-electronics kanye nama-solar cell, kanye ne-silicon e-amorphous, esetshenziswa kumadivayisi e-thin-film kanyeisibani sengadi samaseli elanga

Umehluko kanye nokuxhumana phakathi kwalezi zinto ezimbili

Ku-silicon e-monocrystalline, isakhiwo sohlaka lwekristalu siyafana futhi singabonakala ngokubukeka kwangaphandle okufanayo. Ku-silicon e-monocrystalline, i-crystal lattice yesampula yonke iyaqhubeka futhi ayinamingcele yokusanhlamvu. Amakristalu amakhulu angawodwa ayivelakancane kakhulu futhi kunzima ukuwakha elabhorethri (bheka ukwenziwa kabusha kwekristalu). Ngokuphambene nalokho, izikhundla zama-athomu ezakhiweni ezi-amorphous zikhawulelwe ekuhleleni okufushane.

Izigaba ze-Polycrystalline kanye ne-subcrystalline zakhiwe inani elikhulu lamakristalu amancane noma ama-microcrystals. I-Polysilicon iyinto eyakhiwe ngamakristalu amaningi amancane e-silicon. Amaseli e-Polycrystalline angabona ukuthungwa ngomphumela wensimbi ebonakalayo. Amabanga e-semiconductor kufaka phakathi i-polysilicon yebanga lelanga aguqulwa abe yi-silicon ye-monocrystalline, okusho ukuthi amakristalu axhunywe ngokungahleliwe ku-polysilicon aguqulwa abe yikristalu eyodwa enkulu. I-Monocrystalline silicon isetshenziselwa ukwenza amadivayisi amaningi e-microelectronic asekelwe ku-silicon. I-Polysilicon ingafinyelela ubumsulwa obungu-99.9999%. I-polysilicon emsulwa kakhulu isetshenziswa futhi embonini ye-semiconductor, njengezinduku ze-polysilicon ezingamamitha amabili kuya kwamathathu ubude. Embonini ye-microelectronics, i-polysilicon inezinhlelo zokusebenza kokubili ezikalini ezinkulu nezincane. Izinqubo zokukhiqiza ze-silicon ye-monocrystalline zifaka phakathi inqubo yaseCzeckorasky, ukuncibilika kwendawo kanye nenqubo ye-Bridgman.

Umehluko phakathi kwe-polysilicon ne-monocrystalline silicon ubonakala kakhulu ezimpahleni zomzimba. Ngokuphathelene nezakhiwo zemishini nezikagesi, i-polysilicon ingaphansi kwe-monocrystalline silicon. I-Polysilicon ingasetshenziswa njengezinto zokusetshenziswa zokudweba i-monocrystalline silicon.

1. Ngokuphathelene ne-anisotropy yezakhiwo zemishini, izakhiwo zokukhanya kanye nezakhiwo zokushisa, ayibonakali kakhulu kune-silicon e-monocrystalline

2. Ngokuphathelene nezakhiwo zikagesi, ukuqhutshwa kukagesi kwe-polycrystalline silicon akubalulekile kangako kunokwe-monocrystalline silicon, noma cishe akukho ukuqhutshwa kukagesi.

3, maqondana nomsebenzi wamakhemikhali, umehluko phakathi kwalezi zinto ezimbili mncane kakhulu, ngokuvamile zisebenzisa i-polysilicon ngaphezulu