Te rerekētanga i waenga i te polysilicon me te monocrystalline silicon

Ko te rauemi silicon te rauemi taketake me te matua o te umanga semiconductor. Me tīmata hoki te tukanga whakaputa matatini o te mekameka umanga semiconductor mai i te whakaputanga o te rauemi silicon taketake.

Rama māra rā silicon monocrystalline

Ko te silicon monocrystalline he momo silicon taketake. Ina totoka te silicon taketake rewa, ka whakaritea ngā ngota silicon ki roto i te whatunga taimana ki roto i ngā karihi tioata maha. Mena ka tipu ēnei karihi tioata hei kirikiri me te āhua ōrite o te papa tioata, ka honoa ngātahi ēnei kirikiri kia kirikiri hei silicon monocrystalline.

He rite ngā āhuatanga ā-tinana o te silicon monocrystalline ki te konganuku āhua-whakarewa, ā, he ngoikore te kawe hiko, ka piki ake i te pikinga o te pāmahana. I taua wā anō, he nui anō hoki te kawe hiko-haurua o te silicon monocrystalline. He haurua-whakakotahi ā-roto te silicon monocrystalline tino-parakore. Ka taea te whakapai ake i te kawe hiko o te silicon monocrystal tino-parakore mā te tāpiri i ngā huānga iti ⅢA (pērā i te boron), ā, ka taea te hanga haurua-whakakotahi silicon momo-P. Pērā i te tāpiri i ngā huānga iti ⅤA (pērā i te phosphorus, te arsenic rānei) ka taea hoki te whakapai ake i te taumata o te kawe hiko, ka hangaia he haurua-whakakotahi silicon momo-N.

polysiliconrama rā

He momo silicon huānga te polysilicon. Ina totoka te silicon huānga rewa i raro i te āhua o te whakamatao nui, ka whakaritea ngā ngota silicon ki roto i ngā karihi tioata maha i te āhua o te whatanga taimana. Mena ka tipu ēnei karihi tioata hei witi me te whakatakotoranga tioata rerekē, ka whakakotahi ēnei witi ka tio hei polysilicon. He rerekē tēnei i te silicon monocrystalline, e whakamahia ana i roto i ngā hikohiko me ngā pūtau rā, me te silicon amorphous, e whakamahia ana i roto i ngā taputapu kiriata angiangi me ngā taputapu.rama māra pūtau rā

Te rerekētanga me te hononga i waenganui i ngā mea e rua

I roto i te silicon monocrystalline, he ōrite te hanganga anga tioata, ā, ka taea te tautuhi mā te āhua o waho ōrite. I roto i te silicon monocrystalline, he tonu te whatunga tioata o te tauira katoa, ā, kāore he rohe kōhatu. He tino onge ngā tioata takitahi nunui i te āhua, ā, he uaua ki te hanga i roto i te taiwhanga (tirohia te hanga anō). He rerekē, ko ngā tūranga o ngā ngota i roto i ngā hanganga kore-āhua he mea here ki te raupapa poto-whānui.

He maha ngā tioata iti, ngā tioata moroiti rānei kei roto i ngā wāhanga polycrystalline me ngā wāhanga subcrystalline. He rauemi te polysilicon i hangaia mai i ngā tioata silicon iti ake. Ka taea e ngā pūtau polycrystalline te kite i te kakano mā te pānga whakarewa pepa e kitea ana. Ka hurihia ngā momo semiconductor tae atu ki te polysilicon taumata rā ki te silicon monocrystalline, ko te tikanga ka hurihia ngā tioata i honoa matapōkeretia i roto i te polysilicon hei tioata kotahi nui. Ka whakamahia te silicon monocrystalline hei hanga i te nuinga o ngā taputapu hiko moroiti e hangai ana ki te silicon. Ka taea e te polysilicon te whakatutuki i te 99.9999% te parakore. Ka whakamahia hoki te polysilicon tino-parakore i roto i te umanga semiconductor, pērā i ngā tokotoko polysilicon 2 – ki te 3-mita te roa. I roto i te umanga hiko moroiti, he tono te polysilicon i ngā tauine macro me te moroiti. Ko ngā tukanga whakaputa o te silicon monocrystalline ko te tukanga Czeckorasky, te rewa rohe me te tukanga Bridgman.

Ko te rerekētanga i waenga i te polysilicon me te monocrystalline silicon e kitea ana i roto i ngā āhuatanga ā-tinana. Mō ngā āhuatanga ā-pūkaha me te hiko, he iti iho te polysilicon i te monocrystalline silicon. Ka taea te whakamahi i te polysilicon hei rauemi mata mō te tuhi monocrystalline silicon.

1. Mō te anisotropy o ngā āhuatanga ā-pūkaha, ngā āhuatanga whatu me ngā āhuatanga wera, he iti ake te kitea i te silicon monocrystalline

2. Mō ngā āhuatanga hiko, he iti ake te hiranga o te kawe hiko o te silicon polycrystalline i tērā o te silicon monocrystalline, he tata kore rānei te kawe hiko.

3, i runga i te mahi matū, he tino iti te rerekētanga i waenganui i ngā mea e rua, ko te tikanga he nui ake te whakamahi i te polysilicon