Kwimveliso ye-semiconductor yanamhlanje, ulawulo lobushushu yenye yezona zinto zinefuthe elikhulu ekuchaphazeleni umgangatho wekristale, ukufana kwe-epitaxial, kunye nokuzinza kwenkqubo iyonke. Nokuba kukuveliswa ii-wafers ze-silicon ze-monocrystalline, ukukhulisa iikristale ze-silicon carbide (SiC), okanye ukufaka iifilimu ze-semiconductor ezidityanisiweyo, ukugcina imeko-bume yobushushu elawulwa kakhulu kubalulekile ekufezekiseni iipropati zezinto ezihambelanayo kunye nemveliso ephezulu.
Embindini wezi nkqubo zobushushu obuphezulu kukhoIsifudumezi seGraphite esicocekileyo kakhuluNangona idla ngokufihlwa ngaphakathi kwii-crystal growth furnaces okanye kwi-deposition reactors, eli candelo lisebenza njengomthombo oyintloko wobushushu kunye nenxalenye ebalulekileyo yentsimi yobushushu. Ubunyulu bayo bezinto, uyilo lwesakhiwo, kunye nokuzinza kwexesha elide kuchaphazela ngokuthe ngqo ukusasazwa kobushushu, ukusebenza kakuhle kwamandla, kunye nokuthembeka kwezixhobo. Njengoko ukwenziwa kwe-semiconductor kuqhubeka nokuya kwii-wafers ezinkulu, izixhobo ze-bandgap ezibanzi, kunye neefestile zenkqubo ezifuna kakhulu, itekhnoloji ye-graphite heater ibe yinto ephambili evumela ukucutshungulwa kobushushu okuphambili.
Iimpawu zezinto eziphathekayo
Ngokungafaniyo nezinto zokufudumeza zesinyithi eziqhelekileyo,Izifudumezi zeGraphite ezicocekileyo kakhuluZidibanisa umbane ogqwesileyo kunye nokusebenza kakuhle kobushushu phantsi kobushushu obugqithisileyo. Zenziwe nge-graphite ethambileyo kwaye zicociwe ukuya kwimigangatho ye-semiconductor-grade, ezi heater zihlala ziqulathe amanqanaba amancinci okungcola kwesinyithi, okunciphisa kakhulu umngcipheko wokungcola ngexesha lokukhula kwekristale kunye nokulungiswa kwe-wafer.
I-Graphite ikwabonisa ukuhanjiswa kobushushu okuphezulu kunye nokumelana okugqwesileyo noxinzelelo lobushushu, okuvumela ukufudumeza nokupholisa ngokukhawuleza ngaphandle kokuguquka okukhulu kwesakhiwo. I-coefficient yayo ephantsi yokwandiswa kobushushu inceda ukugcina ukuchaneka kobukhulu kuyo yonke imijikelo yobushushu ephindaphindwayo, ngelixa ukusebenza kwayo kuvumela iijometri ze-heater ezintsonkothileyo ezilungiselelwe uyilo lwe-furnace eyahlukeneyo.
Kwiindawo ezisebenza ngamandla kakhulu, izifudumezi zegrafiti zihlala zikhuselwe ziingubo zesilicon carbide (SiC) okanye zetantalum carbide (TaC). Ezi ngubo ziphucukileyo ziphucula ukumelana ne-oxidation, zinciphisa ukuveliswa kweesuntswana, kwaye zandisa ubomi bezinto, ingakumbi kwi-atmospheres zenkqubo ezityebileyo zehydrogen okanye ezine-halogen ezisetyenziswa kakhulu kwimveliso ye-semiconductor.
Iindima kwiMveliso yeSemiconductor
Isifudumezi segrafiti senza okungaphezulu kakhulu kunomsebenzi osisiseko wokuvelisa ubushushu. Ngaphakathi kwezixhobo ze-semiconductor, sisebenza njengesiseko sentsimi yonke yobushushu, simisela indlela amandla obushushu asasazwa ngayo kulo lonke igumbi lenkqubo.
Kwiinkqubo zePhysical Vapor Transport (PVT) ezisetyenziselwa ukukhula kwekristale yesilicon carbide, izifudumezi zegrafiti zimisela imilinganiselo yobushushu efunekayo kwi-sublimation kunye nokuthuthwa kwezinto zemvelaphi yeSiC. Iimeko zokufudumeza ezizinzileyo zikhuthaza ukukhula kwekristale okulawulwayo ngelixa zinciphisa uxinzelelo lobushushu, ukwakheka kwe-micropipe, kunye nezinye iziphene zekristale ezichaphazela ngqo umgangatho we-wafer.
Ngexesha lokukhula kwekristale yesilicon yaseCzochralski (CZ), ii-graphite heaters zisebenza kunye ne-graphite insulation, ii-quartz crucibles, kunye nezikhuselo zobushushu ukugcina imeko-bume yesilicon enyibilikisiweyo izinzile. Ukusebenza kwazo kuchaphazela i-melt convection, uzinzo lwe-interface ye-solid-liquid, ulawulo lobubanzi bekristale, kunye nokusasazwa kwe-oxygen ngaphakathi kwekristale ekhulayo.
Izifudumezi zeGraphitezibaluleke ngokulinganayo kwi-chemical vapor deposition (CVD), ukukhula kwe-epitaxial, kunye neenkqubo eziphucukileyo ze-ceramic sintering. Kwezi zicelo, ukusasazwa kobushushu obufanayo kubalulekile ekufezekiseni ubukhulu befilimu obuhambelanayo, i-reaction kinetics elawulwayo, kunye neempawu zezinto eziphindaphindwayo. Njengoko izixhobo ze-semiconductor ziqhubeka nokuncipha ngelixa ububanzi be-wafer bukhula, nokuba izinto ezincinci ezingahambelaniyo nobushushu zinokuchaphazela kakhulu isivuno semveliso, okwenza ukusebenza kwe-heater kube yinto ebalulekileyo ngakumbi.
Iindlela zokusilela eziqhelekileyo
Nangona zisebenza kakuhle kakhulu kumaqondo obushushu aphezulu, izifudumezi zegrafiti zizinto ezisetyenziswayo ezithi kancinci kancinci ziwohloke phantsi kweemeko zokusebenza ezinde. Ukuqonda iindlela eziphambili zokusilela kubalulekile ekuphuculeni iishedyuli zokugcinwa kunye nokuphucula ukuthembeka kwezixhobo.
Esinye sezizathu eziqhelekileyo zokuwohloka kwe-oxidation. Nangona i-graphite ihlala izinzile kwiindawo ezingasebenziyo okanye ezingenanto, ukuvezwa kwi-oksijini kumaqondo obushushu aphezulu kuyayidla kancinci kancinci loo nto, kunciphisa amandla oomatshini kunye nokunciphisa ubomi benkonzo. Ulawulo olufanelekileyo lomoya kunye neengubo zokukhusela ke ngoko zibalulekile ekunciphiseni umonakalo onxulumene ne-oxidation.
Ukudinwa yi-thermal yenye ingxaki ebalulekileyo. Imijikelo yokufudumeza nokupholisa ephindaphindwayo ivelisa uxinzelelo lwangaphakathi olunokuthi ekugqibeleni lukhokelele ekwakhekeni kwe-microcrack okanye ukuguqulwa kwendawo. Njengoko iijometri ze-heater zisiba nzima ngakumbi ukuze kuphuculwe intsimi yobushushu, uyilo olucokisekileyo lwesakhiwo luba lubaluleke ngakumbi ukunciphisa uxinzelelo.
Kwizixhobo zokubeka kunye ne-epitaxy, ukubola kweekhemikhali okubangelwa yi-hydrogen, ii-chlorinated silicon precursors, iigesi ezine-fluorine, okanye ezinye iintlobo ezisabelayo zinokutshabalalisa kancinci kancinci iindawo ze-graphite eziveziweyo. Ukuwohloka komphezulu akuchaphazeli kuphela ukusebenza kakuhle kobushushu kodwa kwandisa namathuba okuveliswa kweesuntswana, okuzisa umngcipheko wokungcola kwigumbi lenkqubo.
Ukusebenza ixesha elide kunokubangela ukushukuma kombane njengoko isakhiwo segrafiti sitshintsha phantsi kobushushu obuphezulu obuhlala buhleli. Utshintsho kumandla ombane lutshintsha iimpawu zokufudumeza, nto leyo enokuchaphazela ukufana kobushushu kunye nokuphindaphinda kwenkqubo. Ukubeka esweni rhoqo ukusebenza kombane kuye kwaba yinto ebalulekileyo yokugcinwa kokuthintela kwimveliso ye-semiconductor ephezulu.
Uphuhliso Lwexesha Elizayo
Njengoko ishishini le-semiconductor lisiya kwi-crystal diameters ezinkulu, izixhobo ze-bandgap ezibanzi, kunye neenkqubo zobushushu eziphucukileyo ngakumbi, itekhnoloji ye-graphite heater iyaqhubeka nokukhula.
Iitekhnoloji zokucoca izinto zinciphisa ukungcola kwesinyithi okuncinci ukuya kumanqanaba aphantsi, zixhasa usetyenziso olunobuthathaka kungcoliseko olufana nokukhula kwekristale yeSiC kunye nokuveliswa kwezixhobo zelogic eziphambili. Okwangoku, ukuphuculwa kokucutshungulwa kwegrafiti ye-isostatic kuvelisa izakhiwo ezincinci nezifanayo ezibonelela ngozinzo oluphuculweyo loomatshini kunye nobomi obude bokusebenza.
Ubunjineli bomphezulu obuphambili bube lolunye ulwalathiso olukhulu lophuhliso. Izifudumezi zegrafiti ezigqunywe yiSiC kunye neTaC ziya zithatha indawo yegrafiti engagqunywanga kwiindawo ezinzima zokucubungula kuba zibonelela ngokumelana nokugqwala okuphezulu, ukuveliswa kwamasuntswana anciphileyo, kunye nokucoceka kwenkqubo okuphuculweyo. Kwangaxeshanye, ukulinganisa intsimi yobushushu bedijithali kusetyenziswa uhlalutyo lwezinto ezilinganiselweyo (FEA) kunye ne-computational fluid dynamics (CFD) kuvumela iinjineli ukuba ziphucule i-geometry ye-heater ngokuchanekileyo okungazange kubonwe ngaphambili, okubangela ukufana okungcono kobushushu kunye nomgangatho ophezulu wekristale.
Kutheni Ukhetha i-VET Energy
Ukusebenzisa ubuchule bayo obunzulu kwizixhobo ezishushu kakhulu kunye nobuchwepheshe bokuvelisa ngokuchanekileyo obuphambili,Amandla e-VETizimisele ukubonelela ngee-heater ze-graphite ezicocekileyo kakhulu ezihlangabezana neemfuno ezikhulayo zamashishini okukhula kwekristale ye-semiconductor kunye nonyango lobushushu. Iqela lethu lobunjineli lisebenza ngokusondeleyo nabavelisi bezixhobo, amaziko ophando, kunye nabavelisi bezinto ze-semiconductor ukuphuhlisa izisombululo ze-heater ezibonelela ngokufana okugqwesileyo kobushushu, uzinzo lwesakhiwo, kunye nokuthembeka kokusebenza ixesha elide.
Zethuizifudumezi zegrafayithiZenziwe nge-graphite ekumgangatho ophezulu, ecolekileyo kwaye zicocwa ngokucokisekileyo kwaye zisebenza ngomatshini wokuchwetheza ngokuchanekileyo. Zenzelwe ngokukodwa ukusetyenziswa okunzima, kubandakanya ukukhula kwekristale yeSiC PVT, ukukhula kwekristale yesilicon yeCzochralski (CZ), i-CVD epitaxy, i-ceramic sintering ephucukileyo, kunye nezinye iinkqubo ze-semiconductor zobushushu obuphezulu. Kwiimeko zenkqubo ezilukhuni, sikwabonelela ngee-heaters ze-graphite ezifakwe i-SiC kunye ne-TaC, ezibonelela ngokumelana okuphuculweyo kwe-oxidation, ukumelana nokugqwala okuphezulu, ukuveliswa kwamasuntswana anciphileyo, kunye nobomi benkonzo ende.
Nokuba uphuhlisa izixhobo ezintsha zokukhulisa iikristale, uphucula iinkqubo zentsimi yobushushu ezikhoyo, okanye ufuna umthengisi othembekileyo wezinto ezenziwe ngokwezifiso zegrafiti, iVET Energy iya kuxhasa iprojekthi yakho ngobuchule bobunjineli bobuchwephesha kunye nenkonzo yobugcisa ephendulayo.
Nxibelelana neqela lethunamhlanje ukuze sixoxe ngeemfuno zakho zesicelo, sicele ingcebiso yobuchwephesha, okanye sifumane izisombululo ezenzelwe ngokukodwa inkqubo yakho ye-semiconductor. Ngokusebenzisana, singadala iinkqubo zobushushu ezisebenzayo, ezithembekileyo, nezinokumelana nexesha elizayo zokwenziwa kwe-semiconductor ephucukileyo.
Ixesha leposi: Julayi-03-2026