I-MOCVD (iMetal-Organic Chemical Vapor Deposition) yindlela esetyenziswa kakhulu ekufakweni kwefilimu encinci esemgangathweni ophezulu kwaye idlala indima ebalulekileyo kumashishini okuvelisa ii-semiconductor kunye nee-elektroniki. Njengenxalenye ephambili kwinkqubo ye-MOCVD, ii-heaters ezine-SiC-coated zihlala zisetyenziswa ukuxhasa ukusabela kwegesi kubushushu obuphezulu kunye nokukhula kwe-wafer. Kule meko, ukusetyenziswa kweengubo ze-silicon carbide (SiC) kuphucula kakhulu ukumelana kwe-heater kubushushu obuphezulu, i-oxidation, kunye nokubola kweekhemikhali, okubalulekileyo ekugcineni ukusebenza okuzinzileyo ngexesha lokusebenza ixesha elide.
Enye yezona nzuzo ziphambili zeIzifudumezi ezine-MOCVD SiCyindlela eziqhuba ngayo ubushushu kakuhle kunye nokukwazi kwazo ukufudumala okuphezulu, nto leyo evumela ukuba zisebenze ngokuthembekileyo phantsi kweemeko ezinzima kakhulu. I-silicon carbide inendawo yokunyibilika ephezulu kakhulu, nto leyo evumela ukuba ihlale izinzile ngokwesakhiwo kumaqondo obushushu aphezulu kwaye ithintele ukuguquguquka okanye ukungaphumeleli okunokwenzeka ngezinto zokufudumeza eziqhelekileyo. Ukongeza, uzinzo oluphezulu lweekhemikhali ze-SiC coatings luvumela ukuxhathisa okusebenzayo kwiindawo ezahlukeneyo zokubola, okuqinisekisa ubomi benkonzo ende kunye neemfuno zokugcinwa ezincitshisiweyo.
Ngaphakathi kwiinkqubo ze-MOCVD, indibano yokufudumeza imisela ngokuthe ngqo uzinzo lobushushu ngaphakathi kwigumbi lokusabela kunye nokufana kwe-deposition. Ii-heaters ezine-SiC zidlala indima ebalulekileyo kulo msebenzi ubalulekileyo. Ezi heaters zihlala zisekelwe kwi-graphite ecocekileyo kakhulu okanye kwi-carbon substrates ezikhethekileyo, kunye nomaleko we-SiC oxineneyo nofanayo obekwe phezu komhlaba ngokusebenzisa i-chemical vapor deposition, nto leyo ephucula kakhulu amandla oomatshini kunye nokusebenza kwezinto.
Ngaphaya kokumelana nobushushu obuphezulu, ii-SiC coatings zikwabonelela ngeenzuzo ezicacileyo kulawulo lwee-particle. Ngexesha lokukhula kwe-MOCVD, nokuba amanqanaba amancinci ongcoliseko lwee-particle anokuchaphazela kakubi umgangatho we-epitaxial layer. Umphezulu we-SiC oxineneyo uthintela ngokufanelekileyo ukuwohloka kwe-substrate kunye nokuguquguquka kwezinto, unciphisa ukuveliswa kwee-particle kwaye uhlangabezana neemfuno zococeko oluqinileyo kunye nesivuno sokwenziwa kwe-compound semiconductor. Olu phawu lubaluleke kakhulu kwizicelo eziphambili ze-epitaxial ezibandakanya i-GaN kunye ne-SiC.
Phantsi kokusebenza ixesha elide kobushushu obuphezulu, uzinzo lokujikeleza kobushushu lolunye uphawu oluphambili lokusebenza kwezifudumezi. Iingubo zeSiC zine-coefficient yokwandiswa kobushushu ephantsi kunye nokumelana okunamandla nokutshayiswa kobushushu, okunciphisa umngcipheko wokuqhekeka okanye ukwahlukana ngexesha lomjikelo wokufudumeza nokupholisa ophindaphindiweyo. Olu zinzo lunceda ukugcina ukumelana kombane okuqhubekayo kunye nokusebenza kakuhle kobushushu, kunciphisa ukushukuma kwenkqubo kunye nokubonelela ngefestile yenkqubo elawulekayo ngakumbi yemveliso yobuninzi.
Ngokwembono yolondolozo, ii-heaters ezine-MOCVD SiC zinika ubomi obude kakhulu xa kuthelekiswa nezisombululo ze-ceramic ezingagqunywanga okanye ezizezinye. Ukumelana kwazo nokugqwala okuphezulu kuzivumela ukuba zikwazi ukumelana neegesi ezahlukeneyo zangaphambili kunye neemveliso ezibangelwa kukusabela, ukunciphisa amaxesha okucoca kunye nokutshintsha, ukunciphisa ixesha lokungasebenzi kwezixhobo, kunye negalelo ekuphumeni okuphezulu kwemveliso iyonke.
Njengoko iitekhnoloji ze-compound semiconductor ziqhubeka zihambela phambili ukuya kubuninzi bamandla aphezulu kunye nobukhulu obukhulu be-wafer, iimfuno ezikhulayo zibekwe kukulingana kobushushu be-heater kunye nokuthembeka kwexesha elide. Ngeenkqubo zokugquma ezivuthiweyo kunye neempawu zezinto ezizinzileyo,Izifudumezi ezine-MOCVD SiCziye zamkelwe ngokubanzi njengezinto ezibalulekileyo kwizixhobo ze-epitaxial ezikumgangatho ophezulu, zibonelela ngenkxaso eqinileyo kwiinkqubo zokukhula kwe-epitaxial eziphambili.
Ixesha leposi: Jan-14-2026