Kusiyana pakati pa polysilicon ndi monocrystalline silicon

Zinthu zopangidwa ndi silicon ndiye chinthu chofunikira kwambiri komanso chofunikira kwambiri mumakampani opanga zinthu zopangidwa ndi silicon. Njira yovuta yopangira zinthu zopangidwa ndi silicon iyeneranso kuyamba ndi kupanga zinthu zopangidwa ndi silicon.

Monocrystalline silicon dzuwa dimba kuwala

Silikoni imodzi yopangidwa ndi kristalo ndi mtundu wa silikoni imodzi yopangidwa ndi kristalo. Silikoni imodzi yopangidwa ndi kristalo ikasungunuka, maatomu a silikoni amakonzedwa mu diamondi lattice m'ma nuclei ambiri a kristalo. Ngati nuclei izi za kristalo zimakula kukhala tirigu tomwe tili ndi mawonekedwe ofanana ndi a kristalo, tirigu izi zimaphatikizidwa pamodzi kuti zipangike kukhala silikoni imodzi yopangidwa ndi kristalo.

Silikoni ya monocrystalline ili ndi mphamvu zakuthupi za quasi-metal ndipo imakhala ndi mphamvu yofooka yamagetsi, yomwe imawonjezeka ndi kutentha komwe kumawonjezeka. Nthawi yomweyo, silicon ya monocrystalline ilinso ndi mphamvu yowonjezereka ya semi-electric. Silikoni ya monocrystalline ya Ultra-pure ndi semiconductor yamkati. Mphamvu yowonjezereka ya silicon ya monocrystalline ya ultra-pure ikhoza kukonzedwa powonjezera zinthu za trace ⅢA (monga boron), ndipo semiconductor ya silicon ya P-type ikhoza kupangidwa. Monga kuwonjezera zinthu za trace ⅤA (monga phosphorus kapena arsenic) kungathandizenso kukulitsa mphamvu yowonjezereka, kupanga semiconductor ya silicon ya N-type.

polysiliconkuwala kwa dzuwa

Polysilicon ndi mtundu wa silicon yosungunuka. Pamene silicon yosungunuka imauma pansi pa supercooling, maatomu a silicon amakonzedwa kukhala ma nuclei ambiri a kristalo mu mawonekedwe a diamondi lattice. Ngati ma nuclei a kristalo awa amakula kukhala tirigu okhala ndi mawonekedwe osiyana a kristalo, timbewu timeneti timaphatikizana ndikupangika kukhala polysilicon. Zimasiyana ndi silicon yoyera, yomwe imagwiritsidwa ntchito mu zamagetsi ndi maselo a dzuwa, komanso ndi silicon yopanda mawonekedwe, yomwe imagwiritsidwa ntchito muzipangizo zopyapyala komansokuwala kwa m'munda kwa maselo a dzuwa

Kusiyana ndi kulumikizana pakati pa ziwirizi

Mu silicon imodzi yopangidwa ndi kristalo, kapangidwe ka chimango cha kristalo ndi kofanana ndipo kangathe kuzindikirika ndi mawonekedwe akunja ofanana. Mu silicon imodzi yopangidwa ndi kristalo, lattice ya kristalo ya chitsanzo chonsecho imakhala yopitilira ndipo ilibe malire a tinthu tating'onoting'ono. Makristalo akuluakulu amodzi ndi osowa kwambiri ndipo ndi ovuta kupanga mu labotale (onani recrystallization). Mosiyana ndi zimenezi, malo a maatomu m'mapangidwe a amorphous amangokhazikitsidwa pa dongosolo lafupipafupi.

Magawo a polycrystalline ndi subcrystalline amakhala ndi makristalo ang'onoang'ono ambiri kapena ma microcrystals. Polysilicon ndi chinthu chopangidwa ndi makristalo ang'onoang'ono ambiri a silicon. Maselo a polycrystalline amatha kuzindikira kapangidwe kake pogwiritsa ntchito mawonekedwe a sheet metal effect. Magiredi a semiconductor kuphatikiza polysilicon ya solar grade amasinthidwa kukhala monocrystalline silicon, zomwe zikutanthauza kuti makristalo olumikizidwa mwachisawawa mu polysilicon amasinthidwa kukhala kristalo lalikulu limodzi. Monocrystalline silicon imagwiritsidwa ntchito popanga zida zambiri zamagetsi zamagetsi zochokera ku silicon. Polysilicon imatha kukhala yoyera 99.9999%. Polysilicon yoyera kwambiri imagwiritsidwanso ntchito mumakampani opanga ma semiconductor, monga ndodo za polysilicon zazitali mamita 2 mpaka 3. Mumakampani opanga ma microelectronics, polysilicon imagwiritsidwa ntchito pamasikelo a macro ndi micro. Njira zopangira silicon ya monocrystalline zimaphatikizapo njira ya Czeckorasky, kusungunuka kwa zone ndi njira ya Bridgman.

Kusiyana pakati pa polysilicon ndi monocrystalline silicon kumawonekera makamaka m'makhalidwe enieni. Ponena za makhalidwe a makina ndi magetsi, polysilicon ndi yotsika poyerekeza ndi monocrystalline silicon. Polysilicon ingagwiritsidwe ntchito ngati zopangira zojambula monocrystalline silicon.

1. Ponena za anisotropy ya katundu wa makina, katundu wa kuwala ndi katundu wa kutentha, sizikuonekera bwino kwambiri kuposa silicon ya monocrystalline

2. Ponena za mphamvu zamagetsi, mphamvu zamagetsi za silicon ya polycrystalline sizofunika kwambiri kuposa za silicon ya monocrystalline, kapena sizili ndi mphamvu zamagetsi.

3, pankhani ya ntchito ya mankhwala, kusiyana pakati pa awiriwa ndi kochepa kwambiri, nthawi zambiri amagwiritsa ntchito polysilicon kwambiri