MOCVD (Metal-Organic Chemical Vapor Deposition) inzira inoshandiswa zvakanyanya pakuisa thin-film yemhando yepamusoro uye inoita basa rakakosha mumaindasitiri ekugadzira ma semiconductor nemagetsi. Sechinhu chakakosha mukuita kweMOCVD, maheater ane SiC-coated anowanzo shandiswa kutsigira magasi anodziya zvakanyanya uye kukura kwewafer. Munzvimbo iyi, kushandiswa kwesilicon carbide (SiC) coatings kunowedzera zvakanyanya kuramba kweheater kukupisa kwakanyanya, oxidation, uye chemical corrosion, izvo zvakakosha pakuchengetedza kushanda kwakasimba panguva yekushanda kwenguva refu.
Chimwe chezvakanakira zvikuru zveMahita ane MOCVD SiCndiyo nzira yavo yepamusoro yekufambisa kupisa uye kugona kwavo kupisa kwakanyanya, zvichivabvumira kushanda zvakavimbika mumamiriro ezvinhu akaoma. Silicon carbide ine nzvimbo yekunyunguduka yakakwira zvikuru, zvichiita kuti irambe yakagadzikana muchimiro pakupisa kwakanyanya uye inodzivirira kushanduka kana kutadza kunogona kuitika nezvinhu zvekupisa zvemazuva ese. Pamusoro pezvo, kugadzikana kwakanyanya kwemakemikari eSiC coatings kunoita kuti irambe yakasimba munzvimbo dzakasiyana-siyana dzinopisa, zvichiita kuti igare kwenguva refu uye ideredze zvinodiwa pakugadzirisa.
Mukati meMOCVD systems, musanganiswa wekudziisa unosarudza zvakananga kugadzikana kwetembiricha mukati me reaction chamber pamwe nekufanana kwe deposition. Ma heater ane SiC-coated anoita basa guru mubasa iri rakakosha. Ma heater aya anowanzo shandiswa pa high-purity graphite kana specialized carbon substrates, ane dense uye uniform SiC layer yakaiswa pamusoro kuburikidza ne chemical vapor deposition, zvichivandudza zvikuru simba re mechanical uye material performance.
Kupfuura kuramba kupisa kwakanyanya, machira eSiC anopawo zvakanakira zviri pachena mukudzora zvidimbu. Munguva yekukura kweMOCVD, kunyangwe huwandu hwezvinhu zvakasvibiswa zvinogona kukanganisa kunaka kwechikamu cheepitaxial. Nzvimbo yakakora yeSiC inodzivirira zvinobudirira kuora kwechikamu uye kushanduka kwezvinhu, ichideredza kugadzirwa kwezvidimbu uye ichisangana nekuchena kwakasimba uye zvinodiwa zvekugadzirwa kwezvikamu zve semiconductor. Hunhu uhwu hwakakosha zvakanyanya mukushandiswa kwepamusoro kwe epitaxial kunosanganisira GaN neSiC.
Kana ichishanda kwenguva refu panguva yekupisa kwakanyanya, kugadzikana kwemhepo inodziya (thermal cycling stability) chimwe chiratidzo chikuru chekushanda kwemaheater. Mapendi eSiC ane thermal expansion coefficient yakaderera uye anodzivirira kupisa zvakanyanya, zvichideredza njodzi yekutsemuka kana kupatsanurwa panguva yekupisa nekutonhodza kakawanda. Kugadzikana uku kunobatsira kuchengetedza kuramba kwemagetsi nguva dzose uye kushanda zvakanaka kwekupisa, kuderedza kutenderera kwemhepo uye kupa mukana wekuti magetsi agadziriswe zviri nyore.
Kubva pakuona kwekugadzirisa, maheater ane MOCVD SiC-coated anopa hupenyu hwakareba hwebasa kana tichienzanisa nemhinduro dzisina kuputirwa kana dzimwe nzira dzeceramic. Kusagadzikana kwavo kwakanyanya kwengura kunoita kuti vakwanise kutsungirira magasi akasiyana-siyana epamberi uye zvinobuda mukuita, zvichideredza kuwanda kwekuchenesa uye nguva dzekutsiva, kuderedza nguva yekusashanda kwemidziyo, uye zvichibatsira pakuwedzera kwekugadzirwa kwezvinhu.
Sezvo matekinoroji e semiconductor akabatana achiramba achifambira mberi kusvika pakuwanda kwesimba uye saizi huru dze wafer, kudiwa kuri kuwedzera kunoiswa pakufanana kwekushisa kweheater uye kuvimbika kwenguva refu. Nemaitiro ekuputira akakura uye hunhu hwezvinhu zvakagadzikana,Mahita ane MOCVD SiCzvave zvinhu zvakakosha zvakagamuchirwa zvakanyanya mumidziyo yepamusoro ye epitaxial, zvichipa rutsigiro rwakasimba kune maitiro ekukura epitaxial epamusoro.
Nguva yekutumira: Ndira-14-2026