I-MOCVD (Metal-Organic Chemical Vapor Deposition) iyindlela esetshenziswa kabanzi yokubeka ifilimu encane esezingeni eliphezulu futhi idlala indima ebalulekile embonini yokukhiqiza ye-semiconductor kanye ne-electronics. Njengengxenye ebalulekile enqubweni ye-MOCVD, ama-heater ambozwe yi-SiC avame ukusetshenziswa ukusekela ukusabela kwegesi okushisa okuphezulu kanye nokukhula kwe-wafer. Kulesi simo, ukusetshenziswa kwe-silicon carbide (SiC) coatings kuthuthukisa kakhulu ukumelana kwe-heater emazingeni okushisa aphezulu, i-oxidation, kanye nokugqwala kwamakhemikhali, okubalulekile ekugcineni ukusebenza okuzinzile ngesikhathi sokusebenza kwesikhathi eside.
Enye yezinzuzo eziyinhloko ze-Izifudumezi ezimbozwe nge-MOCVD SiCyi-conductivity yazo yokushisa enhle kakhulu kanye nekhono lokushisa eliphezulu, okuzivumela ukuthi zisebenze ngokuthembekile ngaphansi kwezimo ezimbi kakhulu. I-Silicon carbide inendawo yokuncibilika ephezulu kakhulu, okwenza ukuthi ihlale izinzile ngokwesakhiwo emazingeni okushisa aphezulu futhi ivimbele ukuguquguquka noma ukwehluleka okungenzeka ngezinto ezivamile zokushisa. Ngaphezu kwalokho, ukuzinza kwamakhemikhali okuphezulu kwezembozo ze-SiC kwenza kube nokumelana okuphumelelayo nezindawo eziningi ezigqwalisayo, okuqinisekisa impilo yenkonzo ende kanye nezidingo zokunakekelwa ezincishisiwe.
Ngaphakathi kwezinhlelo ze-MOCVD, ukuhlanganiswa kokushisa kunquma ngqo ukuqina kokushisa ngaphakathi kwegumbi lokusabela kanye nokufana kokufakwa. Ama-heater ambozwe yi-SiC adlala indima ebalulekile kulo msebenzi obalulekile. Lawa ma-heater ngokuvamile asekelwe ku-graphite ehlanzekile kakhulu noma ama-substrate e-carbon akhethekile, anesendlalelo se-SiC esiminyene nesifanayo esibekwe phezu komhlaba ngokusebenzisa ukufakwa komusi wamakhemikhali, okuthuthukisa kakhulu amandla omshini kanye nokusebenza kwezinto.
Ngale kokumelana nokushisa okuphezulu, izembozo ze-SiC nazo ziletha izinzuzo ezicacile ekulawulweni kwezinhlayiya. Ngesikhathi sokukhula kwe-MOCVD, ngisho namazinga okuncibilika kwezinhlayiya angathinta kabi ikhwalithi yesendlalelo se-epitaxial. Ubuso be-SiC obukhulu bucindezela ngempumelelo ukuwohloka kwe-substrate kanye nokuguquguquka kwezinto, kuncishiswe ukukhiqizwa kwezinhlayiya futhi kuhlangatshezwane nezidingo zokuhlanzeka okuqinile kanye nesivuno sokukhiqizwa kwe-compound semiconductor. Lesi sici sibaluleke kakhulu ekusetshenzisweni kwe-epitaxial okuthuthukisiwe okubandakanya i-GaN ne-SiC.
Ngaphansi kokusebenza isikhathi eside kokushisa okuphezulu, ukuzinza kokujikeleza kokushisa kungenye inkomba yokusebenza ebalulekile yama-heater. Izembozo ze-SiC zine-coefficient yokukhulisa ukushisa ephansi kakhulu kanye nokumelana okunamandla nokushaqeka kokushisa, kunciphisa ingozi yokuqhekeka noma yokuhlukanisa phakathi kwemijikelezo yokushisa nokupholisa ephindaphindwayo. Lokhu kuzinza kusiza ukugcina ukumelana kagesi okuqhubekayo kanye nokusebenza kahle kokushisa, kunciphisa ukukhukhuleka kwenqubo futhi kunikeze iwindi lenqubo elilawuleka kakhudlwana lokukhiqiza ngobuningi.
Ngokombono wokulungisa, ama-heater ambozwe yi-MOCVD SiC anikeza impilo yesevisi ende kakhulu uma kuqhathaniswa nezixazululo ze-ceramic ezingamboziwe noma ezihlukile. Ukumelana kwawo nokugqwala okuphezulu kuwavumela ukuthi amelane namagesi ahlukahlukene angaphambili kanye nemikhiqizo yokusabela, anciphise imvamisa yokuhlanza kanye nezikhawu zokushintsha, anciphise isikhathi sokungasebenzi kwemishini, futhi anikele ekukhiqizweni okuphezulu.
Njengoba ubuchwepheshe be-compound semiconductor buqhubeka nokuthuthuka bubheke ekumisweni kwamandla aphezulu kanye nosayizi omkhulu we-wafer, izidingo ezikhulayo zibekwa ekufaneni kwezinga lokushisa le-heater kanye nokuthembeka kwesikhathi eside. Ngezinqubo zokumboza ezivuthiwe kanye nezakhiwo zezinto ezizinzile,Izifudumezi ezimbozwe nge-MOCVD SiCseziye zaba yizingxenye ezibalulekile ezamukelwa kabanzi emishinini ye-epitaxial esezingeni eliphezulu, zinikeza ukwesekwa okuqinile kwezinqubo zokukhula kwe-epitaxial ezithuthukisiwe.
Isikhathi sokuthunyelwe: Jan-14-2026