Pakupanga ma semiconductor, kukonza kutentha kwambiri ndikofunikira kwambiri popanga ma wafer monga oxidation, diffusion, annealing, ndi LPCVD deposition. Njirazi nthawi zambiri zimachitika mkati mwa ma semiconductor furnace systems omwe amagwira ntchito pakati pa 800°C ndi 1200°C, komwe kukhazikika kwa kutentha, kuwongolera kuipitsidwa, ndi kufanana kwa mpweya zimakhudza mwachindunji kuchuluka kwa ma wafer ndi magwiridwe antchito a chipangizocho.
Pakati pa zigawo zofunika kwambiri za ng'anjo,Chubu chofalitsa SiC— yomwe imadziwikanso kuti chubu chofalitsa ma silicon carbide kapena chubu cha SiC furnace — imagwira ntchito yofunika kwambiri pakusunga malo okhazikika. Poyerekeza ndi machubu achikhalidwe a quartz furnace, machubu ofalitsa ma SiC amapereka kutentha kwapamwamba, mphamvu yabwino yamakina, komanso kukana kwambiri mankhwala a semiconductor, zomwe zimapangitsa kuti zikhale zofunika kwambiri popanga ma semiconductor apamwamba.
Kodi Chitoliro Chofalitsa SiC N'chiyani?
Chubu chofalitsa SiC ndi chipinda cha ceramic chozungulira kutentha kwambiri chomwe chimagwiritsidwa ntchito mkati mwa makina ofalitsa semiconductor ndi makina a LPCVD. Ntchito yake yayikulu ndikupanga malo oyera komanso okhazikika pa kutentha kuti agwiritsidwe ntchito ngati wafer.
Pa nthawi yogwira ntchito, maboti a wafer odzaza ndi ma wafer a silicon amaikidwa mkati mwa chubu pomwe mpweya wopangira umadutsa m'chipindamo pansi pa kutentha koyenera. Chubu chofalitsa chimathandiza kusunga:
● Kugawa kutentha kokhazikika
●Kuyenda kwa mpweya wofanana
● Kuipitsidwa kochepa kwa tinthu tating'onoting'ono
●Kuchita zinthu motsatira mankhwala
Machubu ofalitsa SiC amagwiritsidwa ntchito kwambiri mu:
●Mauvuni ofalitsa ma semiconductor
●Makina a ng'anjo ya LPCVD
● Zipangizo zotenthetsera kutentha
●Makina odulira
Ntchito zomwe zimagwiritsidwa ntchito nthawi zambiri zimaphatikizapo:
●Kusungunuka kwa silikoni
●Kufalikira kwa phosphorous
● Kufalikira kwa boron
●Kuyika kwa polysilicon
●Kuyika kwa silicon nitride
Mu mafashoni amakono, zofunikira pa kufanana kwa njira ya uvuni ndi zokhwima kwambiri. Mwachitsanzo, njira zapamwamba za LPCVD zingafunike kufanana kwa kutentha kwa wafer mkati mwa ±1°C mpaka ±3°C kudutsa ng'anjo. Kagwiridwe ka kutentha kwa chubu chofalitsa kumakhudza mwachindunji luso limeneli.
Chifukwa Chake Silicon Carbide (SiC) Imagwiritsidwa Ntchito Pa Machubu Ofalitsa
Kugwiritsa ntchito machubu ofalitsa a silicon carbide kukukula chifukwa cha zinthu zapadera za SiC pansi pa kutentha kwambiri.
Chimodzi mwa ubwino wofunikira kwambiri ndi kukhazikika kwa kutentha. SiC imatha kugwira ntchito nthawi zonse kutentha kopitilira 1200°C, pomwe imasunga umphumphu wolimba panthawi yobwerezabwereza kutentha.
Ubwino wina waukulu ndi kutentha kwa SiC. Kutentha kwa SiC nthawi zambiri kumakhala motere:
●120–200 W/m·K ya SiC yoyera kwambiri
●Poyerekeza ndi quartz pa ~1.4 W/m·K yokha
Kusiyana kwakukulu kumeneku kumalola kusamutsa kutentha mwachangu komanso mofanana mkati mwa uvuni, zomwe zimathandiza kukonza kusinthasintha kwa njira yogwiritsira ntchito wafer kupita ku wafer.
SiC imaperekanso:
● Kukana bwino kwambiri mpweya wochokera ku chlorine ndi fluorine
● Mphamvu yamakina yapamwamba kuposa quartz
●Kukana bwino kutentha
●Chiwopsezo chotsika cha kusintha kwa zinthu pakapita nthawi yayitali yopangira zinthu
Makhalidwe amenewa amachititsa kuti machubu a SiC furnace akhale oyenera kwambiri m'malo opangira kutentha kwa semiconductor komwe kugwira ntchito nthawi yayitali komanso kubwerezabwereza kwa njira yokhazikika ndikofunikira.
Kapangidwe ndi Makhalidwe a Machubu Ogawa a SiC
Machubu ambiri ofalitsa a SiC okhala ndi semiconductor ali ndi kapangidwe kolondola ka cylindrical komwe kamakonzedwa bwino kuti kagwiritsidwe ntchito pa uvuni wowongoka kapena wopingasa.
Mosiyana ndi machubu wamba a ceramic a mafakitale, machubu a SiC a semiconductor-grade amafunika kulekerera kwambiri popanga chifukwa kusintha pang'ono kungakhudze:
● Nthawi yokhala ndi gasi
● Kugawa kutentha
●Kutalikirana kwa malo ophikira
● Kufanana kwa malo operekera zinthu
Ubwino wa pamwamba pa mkati ndi wofunikanso kwambiri. Malo osalala komanso oyera kwambiri amathandiza kuchepetsa:
● Kupanga tinthu tating'onoting'ono
●Kukonza zotsalira za zinthu
● Kuipitsidwa ndi chitsulo
Machubu ena apamwamba a ng'anjo amagwiritsa ntchito zokutira za CVD SiC kuti apititse patsogolo kukana dzimbiri komanso kuyera kwa pamwamba.
Kukhuthala kwa khoma ndi kapangidwe kake ziyeneranso kulinganiza bwino kutentha ndi kulimba kwa makina. Pakukonza ma semiconductor, machubu a uvuni amatha kukhala ndi nthawi zambiri zotenthetsera ndi kuziziritsa nthawi yonse yomwe amagwira ntchito.
Udindo wa Machubu Ogawa a SiC mu Njira Zopangira Semiconductor
Pakupanga zinthu za semiconductor, chubu chofalitsa cha SiC chimagwira ntchito kuposa chipinda chongowoneka chabe. Chimakhudza mwachindunji kukhazikika kwa njira ndi ubwino wa wafer.
Mu njira zotenthetsera kutentha, chubuchi chimathandiza kusunga kayendedwe ka mpweya ndi kutentha kofanana, zomwe ndizofunikira popanga mafilimu apamwamba a oxide.
Mu njira zofalitsira, mpweya wokhazikika mkati mwa chubu cha SiC umathandizira kugawa kolondola kwa dopant kuti phosphorous kapena boron ifalikire.
Pa ntchito za LPCVD, monga polysilicon ndi silicon nitride deposition, kutentha kwa SiC kumathandiza kukonza kufanana kwa makulidwe a filimu mu wafer batch yonse.
Mavuto Ofala a Machubu Opatsirana a SiC
Ngakhale kuti SiC imapereka kulimba kwabwino kwambiri, machubu ofalitsa amawonongekabe kwa nthawi yayitali pansi pa mikhalidwe ya semiconductor process.
Vuto limodzi lofala ndi kuipitsidwa kwa tinthu tating'onoting'ono komwe kumachitika chifukwa cha kukalamba pamwamba kapena kusonkhanitsa zinyalala za processing. Pakapita nthawi, kukhudzana mobwerezabwereza ndi mankhwala otentha kwambiri kumatha kuwononga pang'onopang'ono mkati mwa pamwamba, zomwe zimawonjezera chiopsezo cha kuipitsidwa.
Kusweka kwa kutentha ndi vuto lina. Kukwera kwa kutentha mwachangu kapena kuyika zinthu zosafanana mu wafer kungayambitse kupsinjika kwa kutentha komwe kungayambitse ming'alu yaying'ono kapena kulephera kwa kapangidwe kake.
Kuwonongeka kwa mankhwala kungachitikenso m'malo oyeretsera okhala ndi halogen. Kukhudzidwa ndi mpweya wokhala ndi fluorine kwa nthawi yayitali kumatha kuwononga pang'onopang'ono pamwamba pa chubu ndikusokoneza kukhazikika kwa ntchito.
M'malo opangira zinthu, mavuto awa angayambitse:
●Kusinthasintha kwa kutentha
● Kusagwirizana kwa filimu
● Kuchuluka kwa tinthu tating'onoting'ono
● Kuchepetsa kubwerezabwereza kwa njira
Pachifukwa ichi, mafakitale a semiconductor nthawi zambiri amawunika momwe chubu cha ng'anjo chimagwirira ntchito kudzera mu mapulogalamu owunikira nthawi zonse komanso owongolera.
Kusamalira ndi Kusamalira Moyo Wonse
Kusamalira bwino ndikofunikira kuti nthawi yogwira ntchito ikuleMachubu a ng'anjo ya SiCndi kusunga magwiridwe antchito okhazikika a semiconductor.
Ma fab ambiri amagwiritsa ntchito njira zowunikira zomwe zimaphatikizapo:
● Kuyang'ana malo owoneka bwino
● Kuwunika momwe zinthu zikuyendera
●Kuyesa ziyeneretso za ng'anjo
● Kutsimikizira kufanana kwa kutentha
Njira zoyeretsera zingaphatikizepo kutsuka ndi mankhwala onyowa kapena kuwotcha ndi kutentha kwambiri kuti muchotse zotsalira za njira yoyeretsera.
Pakupanga ma semiconductor okwera kwambiri, kusintha kwa machubu ofalitsa nthawi zambiri kumadalira:
●Maola ogwirira ntchito
● Kuwerengera kwa kutentha
●Kugwira ntchito kwa tinthu tating'onoting'ono
●Malire a ziyeneretso
M'malo moyembekezera kuwonongeka kooneka, zinthu zopangidwa ndi nsalu nthawi zambiri zimalowa m'malo mwa machubu a uvuni asanayambe kuwononga ma wafer.
Pamene ukadaulo wa semiconductor ukupita patsogolo ku ma node ang'onoang'ono opangira zinthu komanso kugwiritsa ntchito kutentha kofunikira kwambiri, kufunika kokhala ndi mphamvu zodalirikamachubu ofalitsa a silicon carbidezipitiliza kukula. Kuthekera kwawo kuthandizira kukonza kutentha kokhazikika, kuipitsidwa pang'ono, komanso kudalirika kwa ng'anjo kwa nthawi yayitali kumawapangitsa kukhala zinthu zofunika kwambiri pazida zamakono zopangira semiconductor.
Nthawi yotumizira: Meyi-08-2026