Phapang pakeng tsa polysilicon le monocrystalline silicon

Thepa ea silicon ke thepa ea motheo le ea mantlha indastering ea semiconductor. Ts'ebetso e rarahaneng ea tlhahiso ea ketane ea indasteri ea semiconductor le eona e lokela ho qala tlhahisong ea thepa ea motheo ea silicon.

Leseli la serapa sa letsatsi la silicon e le 'ngoe e bonojoana

Silicone e qhibilihisitsoeng ke mofuta oa silicone ea mantlha. Ha silicone ea mantlha e qhibilihisitsoeng e tiea, liathomo tsa silicon li hlophisitsoe ka har'a lattice ea daemane ho ba li-nuclei tse ngata tsa kristale. Haeba li-nuclei tsena tsa kristale li hola ho ba lithollo tse nang le tataiso e tšoanang ea sefofane sa kristale, lithollo tsena li tla kopanngoa ka nako e le 'ngoe ho etsa kristale ho ba silicone e qhibilihisitsoeng.

Silicon e le 'ngoe e na le thepa ea 'mele ea quasi-metal' me e na le conductivity e fokolang ea motlakase, e eketsehang ha mocheso o ntse o eketseha. Ka nako e ts'oanang, silicon e le 'ngoe e boetse e na le conductivity e kholo ea semi-electric. Silicon e le 'ngoe e hloekileng haholo ke semiconductor ea ka hare. Conductivity ea silicon e le 'ngoe e hloekileng haholo e ka ntlafatsoa ka ho eketsa likarolo tsa trace ⅢA (tse kang boron), 'me semiconductor ea silicon ea mofuta oa P e ka thehoa. Joalo ka ho eketsa likarolo tsa trace ⅤA (tse kang phosphorus kapa arsenic) le hona ho ka ntlafatsa boemo ba conductivity, ho thehoa ha semiconductor ea silicon ea mofuta oa N.

polysiliconeleseli la letsatsi

Polysilicon ke mofuta oa silicon ea motheo. Ha silicon ea motheo e qhibilihisitsoeng e tiea tlas'a boemo ba supercooling, liathomo tsa silicon li hlophisitsoe ka har'a li-nuclei tse ngata tsa kristale ka mokhoa oa lattice ea daemane. Haeba li-nuclei tsena tsa kristale li hola ho ba lithollo tse nang le tšekamelo e fapaneng ea kristale, lithollo tsena lia kopana 'me lia kristale ho ba polysilicon. E fapana le silicon e le 'ngoe, e sebelisoang ka har'a lisebelisoa tsa elektroniki le lisele tsa letsatsi, le ho silicon e se nang sebopeho, e sebelisoang lisebelisoa tse tšesaane lemabone a serapa a lisele tsa letsatsi

Phapang le kamano pakeng tsa tse peli

Ho silicon e le 'ngoe e bonaletsang, sebopeho sa foreimi ea kristale sea tšoana 'me se ka khetholloa ka ponahalo e tšoanang ea kantle. Ho silicon e le 'ngoe e bonaletsang, lerako la kristale la sampole eohle lea tsoela pele 'me ha le na meeli ea lithollo. Likristale tse kholo tse le 'ngoe lia fumaneha seoelo haholo 'me ho thata ho li etsa laboratoring (sheba recrystallization). Ka lehlakoreng le leng, maemo a liathomo ka har'a meaho e sa fetoheng a lekanyelitsoe ho tatellano ea nako e khuts'oane.

Mekhahlelo ea polycrystalline le subcrystalline e na le palo e kholo ea likristale tse nyane kapa likristale tse nyane. Polysilicon ke thepa e entsoeng ka likristale tse ngata tse nyane tsa silicon. Lisele tsa polycrystalline li ka lemoha sebopeho ka phello e bonahalang ea tšepe ea lakane. Mekhahlelo ea semiconductor ho kenyeletsoa le polysilicon ea boemo ba letsatsi e fetoloa ho ba silicon e le 'ngoe, ho bolelang hore likristale tse hokahaneng ka mokhoa o sa reroang ka har'a polysilicon li fetoloa kristale e kholo e le 'ngoe. Silicon e le 'ngoe e sebelisoa ho etsa lisebelisoa tse ngata tsa microelectronic tse thehiloeng ho silicon. Polysilicon e ka fihlela bohloeki ba 99.9999%. Polysilicon e hloekileng haholo e boetse e sebelisoa indastering ea semiconductor, joalo ka lithupa tsa polysilicon tse bolelele ba limithara tse 2 ho isa ho tse 3. Indastering ea microelectronics, polysilicon e na le lits'ebetso ho likala tsa macro le micro. Mekhoa ea tlhahiso ea silicon e le 'ngoe e kenyelletsa ts'ebetso ea Czeckorasky, ho qhibiliha ha libaka le ts'ebetso ea Bridgman.

Phapang pakeng tsa polysilicon le monocrystalline silicon e bonahala haholo-holo ka thepa ea 'mele. Mabapi le thepa ea mechine le ea motlakase, polysilicon e tlase ho feta monocrystalline silicon. Polysilicon e ka sebelisoa e le thepa e tala bakeng sa ho hula monocrystalline silicon.

1. Mabapi le anisotropy ea thepa ea mechini, thepa ea optical le thepa ea mocheso, ha e bonahale haholo ho feta silicon e monocrystalline

2. Mabapi le thepa ea motlakase, ho tsamaisoa ha motlakase ha silicon ea polycrystalline ha ho bohlokoa hakaalo ho feta ha silicon ea monocrystalline, kapa esita le ho se tsamaisoe ha motlakase ho hang.

3, mabapi le ts'ebetso ea lik'hemik'hale, phapang pakeng tsa tse peli e nyane haholo, ka kakaretso e sebelisa polysilicon ho feta