MAITIRO EKUGADZIRA CHIGWACHI CHESILICON
A chifukidziroChidimbu chesilicon chine ukobvu hwe 1 millimeter uye chine nzvimbo yakati sandara zvakanyanya nekuda kwemaitiro akaomarara. Kushandiswa kunotevera kunosarudza kuti ndeipi nzira yekurima kristalo inofanira kushandiswa. Semuenzaniso, muCzochralski process, polycrystalline silicon inonyungudutswa uye kristalo yembeu yakatetepa inonyikwa musilicon yakanyungudutswa. Kristaro yembeu inobva yatenderedzwa yodhonzwa zvishoma nezvishoma kumusoro. Colossus inorema zvikuru, monocrystal, inobuda. Zvinokwanisika kusarudza hunhu hwemagetsi hwemonocrystal nekuwedzera mayuniti madiki edopants dzakachena zvakanyanya. Makristaro anoiswa dope zvichienderana nezvinodiwa nemutengi uye obva akweshwa uye ochekwa kuita zvidimbu. Mushure mematanho akasiyana-siyana ekugadzira, mutengi anogamuchira mawafer ake akatarwa mupakeji yakakosha, izvo zvinobvumira mutengi kushandisa wafer ipapo ipapo mumutsara wayo wekugadzira.
Maitiro eCZOCHRALSKI
Nhasi, chikamu chikuru chesilicon monocrystals chinorimwa zvichienderana nemaitiro eCzochralski, ayo anosanganisira kunyungudutsa polycrystalline high-purity silicon mu hyperpure quartz crucible uye kuwedzera dopant (kazhinji B, P, As, Sb). Kristaro yembeu ye monocrystalline yakatetepa inonyikwa musilicon yakanyungudutswa. Kristaro hombe yeCZ inobva yabuda kubva mukristaro iyi yakatetepa. Kudzora kwakanyatsonaka kwekushisa nekuyerera kwesilicon yakanyungudutswa, kutenderera kwekristaro necrucible, pamwe nekumhanya kwekudhonza kristaro zvinoguma ne monocrystalline silicon ingot yepamusoro-soro.
Nzira yeNzvimbo Inoyangarara
Mamonocrystals anogadzirwa zvichienderana nenzira yefloat zone akanakira kushandiswa muzvikamu zvemagetsi zve semiconductor, zvakaita seIGBTs. Silikoni ine cylindrical polycrystalline silicon ingot inosungirirwa pamusoro pe induction coil. Nzvimbo yemagetsi yeradio frequency inobatsira kunyungudutsa silicon kubva muchikamu chezasi chetsvimbo. Nzvimbo yemagetsi inodzora kufamba kwesilicon nepaburi diki mu induction coil uye ichienda ku monocrystal iri pasi (float zone method). Doping, inowanzo kuve neB kana P, inowanikwa nekuwedzera zvinhu zvine gaseous.
Nguva yekutumira: Chikumi-07-2021