Umahluko phakathi kwe-polysilicon kunye ne-silicon ye-monocrystalline

Izinto zeSilicon yeyona nto isisiseko kunye neyona nto iphambili kwishishini le-semiconductor. Inkqubo yemveliso entsonkothileyo yekhonkco leshishini le-semiconductor kufuneka iqale kwakhona kwimveliso yezinto ezisisiseko zesilicon.

I-Monocrystalline silicon ukukhanya kwegadi yelanga

I-silicon ye-Monocrystalline luhlobo lwe-silicon esisiseko. Xa i-silicon etyhidiweyo iqina, iiathom zesilicon zicwangciswa kwileti yedayimani kwiinuclei ezininzi zekristale. Ukuba ezi nuclei zekristale zikhula zibe ziinkozo ezine-orientation efanayo ye-crystal plane, ezi nkozo ziya kudityaniswa ngokunxuseneyo ukuze zibe yi-silicon ye-monocrystalline.

I-silicon ye-Monocrystalline ineempawu ezibonakalayo ze-quasi-metal kwaye ine-conductivity ebuthathaka yombane, eyanda ngokunyuka kweqondo lokushisa. Ngexesha elifanayo, i-silicon ye-monocrystalline nayo ine-conductivity ebalulekileyo ye-semi-electrical conductivity. I-silicon ecocekileyo ye-monocrystalline yi-semiconductor yangaphakathi. I-conductivity ye-silicon ye-ultra-pure monocrystal inokuphuculwa ngokongeza umkhondo ⅢA izinto (ezifana ne-boron), kunye ne-P-uhlobo lwe-silicon semiconductor inokwakheka. Njengokongezwa kwezinto ezilandelwayo ⅤA izinto (ezifana ne-phosphorus okanye i-arsenic) nazo zinokuphucula i-degree of conductivity, ukubunjwa kwe-N-type silicon semiconductor.

polysiliconukukhanya kwelanga

I-Polysilicon luhlobo lwe-silicon esisiseko. Xa i-silicon etyhidiweyo iqina phantsi kwemeko yokupholisa okukhulu, iiathom zesilicon zicwangciswa kwiinuclei ezininzi zekristale ngendlela yeleti yedayimane. Ukuba ezi nuclei zekristale zikhula zibe ziinkozo ezine-crystal orientation eyahlukileyo, ezi nkozo ziyadibanisa kwaye zikhazimle kwipolysilicon. Ihluke kwi-silicon ye-monocrystalline, esetyenziswa kwi-electronics kunye neeseli zelanga, kunye ne-silicon ye-amorphous, esetyenziswa kwizixhobo zefilimu ezibhityileyo kunye.iiseli zelanga ukukhanya kwegadi

Umahluko kunye noqhagamshelwano phakathi kwezi zimbini

Kwi-silicon ye-monocrystalline, isakhiwo se-crystal frame siyafana kwaye sinokuchongwa ngokubonakala kwangaphandle okufanayo. Kwi-silicon ye-monocrystalline, i-crystal lattice yesampuli yonke iyaqhubeka kwaye ayinayo imida yengqolowa. Iikristale ezinkulu ezinkulu zinqabile ngokwendalo kwaye kunzima ukwenza elabhoratri (jonga ukuhlaziya kwakhona). Ngokwahlukileyo, izikhundla zee-athomu kwizakhiwo ze-amorphous zithintelwe kuluhlu olufutshane.

Izigaba zePolycrystalline kunye ne-subcrystalline ziquka inani elikhulu leekristale ezincinci okanye i-microcrystals. Ipolysilicon yimathiriyeli eyenziwe ziikristale ezininzi ezincinci zesilicon. Iiseli ze-Polycrystalline ziyakwazi ukuqaphela ukuthungwa nge-sheet sheet ebonakalayo. Amanqanaba e-semiconductor aquka i-polysilicon ye-solar grade aguqulwa abe yi-silicon ye-monocrystalline, oku kuthetha ukuba i-crystals edibeneyo ngokungaqhelekanga kwi-polysilicon iguqulwa ibe yikristale enye enkulu. I-silicon ye-Monocrystalline isetyenziselwa ukwenza uninzi lwezixhobo ze-microelectronic ezisekelwe kwi-silicon. I-Polysilicon inokufezekisa ubunyulu be-99.9999%. I-polysilicon ye-Ultra-pure iphinda isetyenziswe kwishishini le-semiconductor, njenge-2 - ukuya kwi-3-meter long polysilicon rods. Kwishishini le-microelectronics, i-polysilicon inezicelo kuzo zombini izikali ezinkulu kunye nezincinci. Iinkqubo zokuvelisa i-silicon ye-monocrystalline ziquka inkqubo ye-Czeckorasky, ukunyibilika kwendawo kunye nenkqubo ye-Bridgman.

Umahluko phakathi kwe-polysilicon kunye ne-silicon ye-monocrystalline ibonakala ngokukodwa kwiipropati zomzimba. Ngokubhekiselele kumatshini kunye nombane, i-polysilicon ingaphantsi kwe-silicon ye-monocrystalline. I-Polysilicon inokusetyenziswa njengento ekrwada yokuzoba isilicon ye-monocrystalline.

1. Ngokubhekiselele kwi-anisotropy yeepropathi zomatshini, iipropathi ze-optical kunye ne-thermal properties, ingabonakali kakhulu kune-silicon ye-monocrystalline.

2. Ngokweempawu zombane, ukuqhutywa kombane we-polycrystalline silicon kubaluleke kakhulu kune-silicon ye-monocrystalline, okanye phantse akukho conductivity yombane.

I-3, ngokwemiqathango yomsebenzi wemichiza, umahluko phakathi kwezi zibini zincinci kakhulu, ngokubanzi sebenzisa i-polysilicon ngakumbi