Kuyini i-TaC Coating?

Embonini ye-semiconductor eshintsha ngokushesha, izinto ezithuthukisa ukusebenza, ukuqina, kanye nokusebenza kahle zibalulekile. Enye into entsha enjalo yi-Tantalum Carbide (TaC) coating, ungqimba oluvikelayo olusezingeni eliphezulu olusetshenziswa ezingxenyeni ze-graphite. Le bhulogi ihlola incazelo ye-TaC coating, izinzuzo zobuchwepheshe, kanye nezinhlelo zayo zokuguqula ekukhiqizweni kwe-semiconductor.

Ⅰ. Kuyini i-TaC Coating?

I-TaC coating iwungqimba lwe-ceramic olusebenza kahle kakhulu olwakhiwe yi-tantalum carbide (inhlanganisela ye-tantalum ne-carbon) efakwe ezindaweni ze-graphite. I-coating ivame ukusetshenziswa kusetshenziswa amasu e-Chemical Vapor Deposition (CVD) noma i-Physical Vapor Deposition (PVD), okudala isithiyo esiqinile nesimsulwa kakhulu esivikela i-graphite ezimweni ezimbi kakhulu.

Izakhiwo Eziyinhloko Zokumboza i-TaC

●Ukuzinza Kokushisa Okuphezulu: Imelana namazinga okushisa angaphezu kuka-2200°C, isebenza kangcono kunezinto zendabuko ezifana ne-silicon carbide (SiC), ewohloka ngaphezu kuka-1600°C.

●Ukumelana namakhemikhali: Imelana nokugqwala okuvela ku-hydrogen (H₂), i-ammonia (NH₃), umhwamuko we-silicon, kanye nezinsimbi ezincibilikisiwe, okubaluleke kakhulu ezindaweni zokucubungula ze-semiconductor.

●Ubumsulwa Obuphezulu Kakhulu: Amazinga okungcola angaphansi kuka-5 ppm, okunciphisa izingozi zokungcola ezinqubweni zokukhula kwekristalu.

●Ukuqina Kokushisa Nokwemishini: Ukunamathela okuqinile ku-graphite, ukwanda okuphansi kokushisa (6.3×10⁻⁶/K), kanye nobunzima (~2000 HK) kuqinisekisa ukuhlala isikhathi eside ngaphansi kokujikeleza kokushisa.

Ⅱ. Ukugqoka i-TaC ekukhiqizeni ama-semiconductor: Izicelo Eziyinhloko

Izingxenye ze-graphite ezimbozwe nge-TaC zibalulekile ekwakhiweni kwe-semiconductor okuthuthukisiwe, ikakhulukazi kumadivayisi e-silicon carbide (SiC) kanye ne-gallium nitride (GaN). Nazi izimo zokusetshenziswa kwazo ezibalulekile:

1. Ukukhula Kwekristalu Elilodwa le-SiC

Ama-wafer e-SiC abalulekile kuma-elekthronikhi asebenza ngamandla kanye nezimoto zikagesi. Ama-graphite kanye nama-susceptor ambozwe nge-TaC asetshenziswa ezinhlelweni ze-Physical Vapor Transport (PVT) kanye ne-High-Temperature CVD (HT-CVD) ukuze:

● Cindezela Ukungcola: Okuqukethwe okuphansi kokungcola kwe-TaC (isb., i-boron <0.01 ppm vs. 1 ppm ku-graphite) kunciphisa amaphutha kumakristalu e-SiC, kuthuthukisa ukumelana kwe-wafer (4.5 ohm-cm vs. 0.1 ohm-cm ye-graphite engagqokwanga).

● Thuthukisa Ukuphathwa Kokushisa: Ukukhishwa komoya okufanayo (0.3 ku-1000°C) kuqinisekisa ukusatshalaliswa kokushisa okuqhubekayo, okuthuthukisa ikhwalithi yekristalu.

2. Ukukhula kwe-Epitaxial (GaN/SiC)

Kuma-reactor e-Metal-Organic CVD (MOCVD), izingxenye ezimbozwe nge-TaC njengezithwali ze-wafer kanye nama-injector:

●Vimbela Ukusabela Kwegesi: Imelana nokugqwala nge-ammonia ne-hydrogen ku-1400°C, igcina ubuqotho be-reactor.

●Thuthukisa Isivuno: Ngokunciphisa ukuchitheka kwezinhlayiya kusuka ku-graphite, i-CVD TaC coating inciphisa amaphutha ezingqimbeni ze-epitaxial, okubalulekile kuma-LED asebenza kahle kakhulu namadivayisi e-RF.

3. Ezinye Izinhlelo Zokusebenza Ze-Semiconductor

●Ama-Reactors Asezingeni Eliphezulu Lokushisa: Ama-susceptor kanye nama-heater ekukhiqizweni kwe-GaN azuza ekuzinzeni kwe-TaC ezindaweni ezicebile nge-hydrogen.

●Ukuphathwa Kwesitsha Esilukiwe: Izingxenye ezimboziwe njengezindandatho nezivalo zinciphisa ukungcola kwensimbi ngesikhathi sokudluliselwa kwe-wafer

Ⅲ. Kungani i-TaC Coating Isebenza Kangcono Kunezinye Izindlela?

Ukuqhathaniswa nezinto ezivamile kugqamisa ukuphumelela kwe-TaC:

Idatha etholwe ekuqhathanisweni kwemboni

IV. Kungani ukhethe i-VET?

Ngemva kokutshalwa kwezimali okuqhubekayo ocwaningweni nasekuthuthukisweni kobuchwepheshe,Udokotela WezilwaneIzingxenye ezimbozwe nge-Tantalum carbide (TaC), njengeIndandatho yomhlahlandlela we-graphite eboshwe nge-TaC, Isivikelo sepuleti esimbozwe nge-CVD TaC, I-TaC Coated Susceptor Yemishini Ye-Epitaxy,Izinto ze-graphite ezinezimbobo ezimbozwe nge-tantalum carbidefuthiI-Wafer susceptor ene-TaC coating, zithandwa kakhulu ezimakethe zaseYurophu naseMelika. I-VET ilangazelela ngobuqotho ukuba ngumlingani wakho wesikhathi eside.