Ebe ọ bụ nacruciblea na-eji dị ka akpa na enwere convection n'ime, ka nha nke otu kristal emepụtara na-abawanye, okpomọkụ convection na okpomọkụ gradient uniformity na-esiwanye ike ịchịkwa. Site n'ịgbakwunye oghere ndọta iji mee ka ihe na-agbaze agbaze na-arụ ọrụ na ike Lorentz, enwere ike belata convection ma ọ bụ wepụ ya iji mepụta silicon kristal dị elu.
Dabere n'ụdị oghere ndọta, enwere ike kewaa ya n'ime oghere ndọta kwụ ọtọ, oghere ndọta kwụ ọtọ na oghere ndọta CUSP:
Ebe ndọta kwụ ọtọ enweghị ike iwepụ isi convection n'ihi ihe arụrụ arụ ma a naghị ejikarị ya eme ihe.
The ntụziaka nke magnetik mpaghara akụrụngwa nke kehoraizin magnetik bụ perpendicular na isi okpomọkụ convection na ele mmadụ anya n'ihu convection nke crucible mgbidi, nke nwere ike n'ụzọ dị irè igbochi ije, na-ejigide flatness nke ibu interface, na ibelata ibu n'ọnyá.
Igwe ndọta CUSP na-enwekwu otu agba na mbufe ọkụ nke gbazee n'ihi akara ngosi ya, yabụ nyocha na oghere magnetik na CUSP na-aga aka na aka.
Na China, Xi'an University of Technology aghọtala mmepụta na kristal Anam Udeme nnwale nke silicon otu kristal iji magnetik ubi mbụ. Isi ngwaahịa ya bụ ụdị 6-8in na-ewu ewu, nke a na-achọ na ahịa silicon wafer maka sel fotovoltaic anyanwụ. Na mba ọzọ, dị ka KAYEX na United States na CGS na Germany, isi ngwaahịa ha bụ 8-16in, nke kwesịrị ekwesị maka otu mkpanaka silicon kristal na ọkwa nke ultra-large-scale integrated circuits na semiconductor. Ha nwere otu n'ime oghere magnetik maka uto nke nnukwu kristal dị elu dị elu ma bụrụ ndị nnọchiteanya kachasị.
Ihe nkesa magnetik na mpaghara crucible nke otu usoro uto kristal bụ akụkụ kachasị mkpa nke magnet, gụnyere ike na ịdị n'otu nke oghere magnet na nsọtụ nke crucible, etiti nke crucible, na ihe kwesịrị ekwesị. anya n'okpuru mmiri mmiri. The mkpokọta kehoraizin na edo transverse magnetik, na magnetik ahịrị nke ike na perpendicular na kristal ibu axis. Dị ka magnetik mmetụta na iwu Ampere, eriri igwe dị nso na nsọtụ nke crucible na ike ubi bụ nke kasị ukwuu. Ka ebe dị anya na-abawanye, ikuku magnetik na-abawanye, ike ubi ji nwayọọ nwayọọ na-ebelata, ọ bụkwa nke kacha nta na etiti.
Ọrụ nke nnukwu ihe ndọta
Na-egbochi convection thermal: Na enweghị oghere magnetik dị n'èzí, silicon a wụrụ awụ ga-emepụta convection eke n'oge okpomọkụ, nke nwere ike ibute nkesa adịghị mma nke na-adịghị mma na ịmepụta ntụpọ kristal. Igwe ndọta dị n'èzí nwere ike ịkwụsị convection a, na-eme ka nkesa okpomọkụ dị n'ime ebe ahụ gbazee karịa ma na-ebelata nkesa adịghị mma.
Ịchịkwa ọnụ ọgụgụ uto kristal: Ebe ndọta nwere ike imetụta ọnụego na ntụzịaka nke uto kristal. Site na ịchịkwa ike na nkesa nke oghere magnetik, enwere ike ịkwalite usoro uto kristal na iguzosi ike n'ezi ihe na ịdị n'otu nke kristal. N'oge uto nke otu silicon kristal, oxygen na-abanye na silicon na-agbaze tumadi site na mmegharị nke mgbaze na crucible. Igwe ndọta na-ebelata ohere ikuku oxygen na-akpọtụrụ silicon gbazee site na ibelata convection nke gbazee, si otú ibelata mgbasa nke oxygen. N'ọnọdụ ụfọdụ, oghere magnetik dị n'èzí nwere ike ịgbanwe ọnọdụ thermodynamic nke gbazee, dị ka site n'ịgbanwe nhụsianya elu nke agbaze, nke nwere ike inyere aka na-eme ka ikuku oxygen dịkwuo elu, si otú ahụ na-ebelata ikuku oxygen na agbaze.
Belata mgbasa nke ikuku oxygen na adịghị ọcha ndị ọzọ: Oxygen bụ otu n'ime adịghị ọcha na-eto eto nke kristal silicon, nke ga-eme ka kristal dị mma na-akawanye njọ. Igwe ndọta nwere ike ibelata ọdịnaya oxygen na agbaze, si otú ahụ belata mgbasa nke oxygen na kristal ma melite ịdị ọcha nke kristal.
Meziwanye nhazi ime nke kristal: Oghere ndọta nwere ike imetụta nhazi ntụpọ n'ime kristal, dịka nkwụsịtụ na oke ọka. Site n'ibelata ọnụ ọgụgụ nke ntụpọ ndị a ma na-emetụta nkesa ha, enwere ike imeziwanye ogo kristal zuru oke.
Imeziwanye akụrụngwa eletriki nke kristal: Ebe ọ bụ na mpaghara ndọta nwere mmetụta dị ukwuu na microstructure n'oge uto kristal, ha nwere ike melite njirimara eletriki nke kristal, dị ka resistivity na ndụ ndị na-ebu, nke dị oke mkpa maka imepụta ngwaọrụ semiconductor dị elu.
Nabata ndị ahịa ọ bụla si n'akụkụ ụwa niile ka ha bịa leta anyị maka mkparịta ụka ọzọ!
https://www.semi-cera.com/
https://www.semi-cera.com/tac-coating-monocrystal-growth-parts/
https://www.semi-cera.com/cvd-coating/
Oge nzipu: Jul-24-2024