2inihi te rahi o te ingota SiC Dia50.8mmx10mmt 4H-N monocrystal

Ingota SiC 2inihi Dia50.8mmx10mmt 4H-N monocrystal Whakaahua Matua

Whakaahuatanga Poto:

Ko te ingota SiC (silicon carbide) 2-inihi e pā ana ki tētahi tioata kotahi porotaka, āhua poraka rānei, he mea hanga ki te silicon carbide, ā, ko te whānui, ko te roa rānei o te taha he 2 inihi. Ka whakamahia ngā ingota silicon carbide hei rauemi tīmatanga mō te hanga i ngā momo taputapu haurua-ira, pērā i ngā taputapu hiko mana me ngā taputapu optoelectronic.

Tukua mai he īmēra ki a mātou

Ngā Āhuatanga

Hangarau Tipu Tioata SiC

Nā ngā āhuatanga o te SiC ka uaua te whakatipu i ngā tioata takitahi. Ko te take nui o tēnei ko te korenga o te āhua wai me te ōwehenga stoichiometric o Si : C = 1 : 1 i te pēhanga hauhautanga, ā, kāore e taea te whakatipu i te SiC mā ngā tikanga whakatipu kua pakeke ake, pērā i te tikanga kume tika me te tikanga ipu taka, koinei ngā pou matua o te umanga haurua-ira. I roto i te ariā, ka taea anake te whiwhi i tētahi otinga me te ōwehenga stoichiometric o Si : C = 1 : 1 ina nui ake te pēhanga i te 10 E 5 atm, ā, he teitei ake te pāmahana i te 3200 ℃. I tēnei wā, ko ngā tikanga matua ko te tikanga PVT, te tikanga āhua wai, me te tikanga whakatakoto matū āhua kohu pāmahana-teitei.

Ko ngā papa me ngā tioata SiC e tukuna ana e mātou ka whakatipuhia mā te kawe kohu ā-tinana (PVT), ā, koinei te whakataki poto ki te PVT:

I ahu mai te tikanga kawe mamaoa ā-tinana (PVT) i te tikanga whakapūmau āhua-hau i hangaia e Lely i te tau 1955, arā, ka whakanohoia te paura SiC ki roto i tētahi ngongo karāpiti, ka whakamahanatia ki te pāmahana teitei kia pirau ai, kia whakapūmau ai te paura SiC, kātahi ka whakamataohia te ngongo karāpiti, ā, ka whakatakotoria, ka whakatiotia hoki ngā wāhanga āhua-hau kua pirau o te paura SiC hei tioata SiC ki te rohe e karapoti ana i te ngongo karāpiti. Ahakoa he uaua tēnei tikanga ki te tiki tioata SiC kotahi rahi nui, ā, he uaua hoki ki te whakahaere i te tukanga whakatakoto i roto i te ngongo karāpiti, ka whakaratohia he whakaaro mō ngā kairangahau o muri mai.

Nā YM Tairov me ētahi atu i Rūhia i whakauru te ariā o te tioata purapura i runga i tēnei kaupapa, ā, i ea ai te raruraru o te āhua tioata kāore e taea te whakahaere me te tūnga o te pūtake o ngā tioata SiC. I haere tonu ngā kairangahau i muri mai ki te whakapai ake, ā, i te mutunga ka whakawhanakehia te tikanga whakawhiti kohu ā-tinana (PVT) e whakamahia ana i roto i ngā ahumahi i ēnei rā.

Hei tikanga whakatipu tioata SiC tuatahi, ko te PVT te tikanga whakatipu rongonui mō ngā tioata SiC. Ki te whakatauritea ki ētahi atu tikanga, he iti ake ngā whakaritenga mō ngā taputapu whakatipu, he māmā te tukanga whakatipu, he kaha te whakahaere, he whanaketanga me te rangahau tino pai, ā, kua oti kē te hanga i tētahi ahumahi.