Waa maxay dahaarka TaC?

Warshadaha semiconductor-ka ee si xawli ah u koraya, agabka kor u qaada waxqabadka, cimri dhererka, iyo hufnaanta ayaa muhiim ah. Mid ka mid ah hal-abuurka noocaas ah waa dahaarka Tantalum Carbide (TaC), oo ah lakab difaac oo casri ah oo lagu dabaqay qaybaha graphite. Blog-kani wuxuu sahaminayaa qeexitaanka dahaarka TaC, faa'iidooyinka farsamo, iyo codsiyada isbeddelka ee wax soo saarka semiconductor-ka.

Ⅰ. Waa maxay dahaarka TaC?

Dahaarka TaC waa lakab dhoobo ah oo tayo sare leh oo ka kooban tantalum carbide (isku-darka tantalum iyo kaarboon) oo lagu shubo dusha sare ee graphite. Dahaarka waxaa badanaa lagu mariyaa iyadoo la adeegsanayo farsamooyinka Kiimikada Uumiga (CVD) ama Fiisikiska Uumiga Dhimirka (PVD), taasoo abuuraysa caqabad cufan oo aad u saafi ah oo ka ilaalisa graphite xaaladaha ba'an.

Sifooyinka Muhiimka ah ee Dahaarka TaC

●Xasilloonida Heerkulka Sare: Waxay u adkaysataa heerkulka ka sarreeya 2200°C, waxayna ka sarraysaa agabka dhaqameed sida silicon carbide (SiC), kaas oo hoos u dhaca heerkulka ka sarreeya 1600°C.

●Iska caabinta Kiimikada: Waxay iska caabisaa daxalka ka yimaada haydarojiin (H₂), ammonia (NH₃), uumiga silikoon, iyo biraha dhalaalay, kuwaas oo muhiim u ah deegaannada farsamaynta semiconductor-ka.

●Daahirnimo Aad u SareysaHeerarka wasakhda oo ka hooseeya 5 ppm, taasoo yaraynaysa khatarta wasakhda ee hababka koritaanka kiristaalka.

●Cimriga Kuleylka iyo Farsamada: Ku dhegganaansho xooggan oo loogu talagalay garaafitka, ballaarinta kulaylka oo hooseysa (6.3×10⁻⁶/K), iyo adkaanta (~2000 HK) waxay hubinayaan cimri dherer inta lagu jiro wareegga kulaylka.

Ⅱ. Dahaarka TaC ee Waxsoosaarka Semiconductor-ka: Codsiyada Muhiimka ah

Qaybaha garaafitka ee TaC-da ku dahaaran ayaa lagama maarmaan u ah soo saarista semiconductor-ka horumarsan, gaar ahaan qalabka silicon carbide (SiC) iyo gallium nitride (GaN). Hoos waxaa ku qoran kiisaska isticmaalka muhiimka ah:

1. Kobaca Keli ah ee SiC

Wafer-yada SiC waa muhiim u ah elektaroonigga korontada iyo gawaarida korontada. Gawaadhida graphite-ka ee lagu dahaadhay TaC iyo kuwa susceptors-ka waxaa loo isticmaalaa nidaamyada Gaadiidka Uumiga Jirka (PVT) iyo nidaamyada CVD-ga Heerkulka Sare (HT-CVD) si loo:

● Jooji Wasakhowga: Waxyaabaha wasakhda yar ee TaC (tusaale ahaan, boron <0.01 ppm iyo 1 ppm ee garaafitka) waxay yareysaa cilladaha ku jira kiristaalo SiC, taasoo hagaajineysa iska caabinta wafer (4.5 ohm-cm iyo 0.1 ohm-cm ee garaafitka aan dahaarka lahayn).

● Kobcinta Maareynta KulaylkaIftiin isku mid ah (0.3 at 1000°C) wuxuu hubiyaa qaybinta kulaylka oo joogto ah, taasoo wanaajisa tayada kiristaalka.

2. Kobaca Epitaxial (GaN/SiC)

Waxyaabaha ku jira fal-galayaasha Metal-Organic CVD (MOCVD), qaybaha dahaarka leh ee TaC sida sidayaasha wafer-ka iyo durayaasha:

●Ka Hortag Falcelinta Gaaska: Waxay iska caabisaa xoqidda ammonia iyo hydrogen heerkulka 1400°C, iyadoo ilaalinaysa hufnaanta fal-galka.

●Hagaajinta Wax-soo-saarkaMarka la yareeyo daadinta walxaha ka soo baxa graphite, dahaarka CVD TaC wuxuu yareeyaa cilladaha ku jira lakabka epitaxial, kuwaas oo muhiim u ah LED-yada waxqabadka sare leh iyo aaladaha RF.

3. Codsiyada Kale ee Semiconductor-ka

●Falgalayaasha Heerkulka Sare: Sumeeyayaasha iyo kuleyliyeyaasha wax soo saarka GaN waxay ka faa'iidaystaan ​​​​degenaanshaha TaC ee deegaannada hodanka ku ah haydarojiin.

●Maareynta Wafer-kaQaybaha dahaarka leh sida giraangiraha iyo daboollada ayaa yareeya wasakhowga birta inta lagu jiro wareejinta wafer-ka

Ⅲ. Maxay Dahaarka TaC uga Fiican Yahay Beddelka?

Isbarbardhigga agabka caadiga ah wuxuu iftiiminayaa heerka sare ee TaC:

Xogta laga soo xigtay isbarbardhigga warshadaha

IV. Maxaad u dooranaysaa VET?

Ka dib maalgashi joogto ah oo lagu sameeyay cilmi-baarista iyo horumarinta tignoolajiyada,VET-kaqaybaha dahaarka leh ee Tantalum carbide (TaC), sidaGiraanta hagaha graphite ee dahaarka leh ee TaC, Sumeeyaha saxanka dahaarka leh ee CVD TaC, Qalabka Epitaxy ee lagu dahaadhay TaC,Walaxda graphite ee daloolada leh ee dahaarka leh ee Tantalum carbideiyoSusceptor-ka Wafer-ka oo leh dahaarka TaC, aad bay caan uga yihiin suuqyada Yurub iyo Ameerika. VET si daacad ah ayay u rajeyneysaa inay noqoto lammaanahaaga muddada dheer.