8inch 200mm Silicon Carbide SiC Wafers 4H-N iru Gbóògì 500um sisanra
200mm 8inch SiC sobusitireti Specification
Iwọn: 8inch;
Iwọn opin: 200mm± 0.2;
Sisanra: 500um± 25;
Iṣalaye oju: 4 si [11-20] ± 0.5 °;
Iṣalaye ogbontarigi: [1-100]±1°;
Ijinle ogbontarigi: 1 ± 0.25mm;
Gbohungbohun: <1cm2;
Awọn Awo Hex: Ko Si Iyọọda;
Resistivity: 0.015 ~ 0.028Ω;
EPD: <8000cm2;
TED: <6000cm2
BPD: <2000cm2
TSD: <1000cm2
SF: agbegbe <1%
TTV≤15um;
Warp≤40um;
Teriba≤25um;
Awọn agbegbe Poly: ≤5%;
Scratch: <5 ati Gigun Apejọ< 1 Diamita Wafer;
Chips/Indents: Ko si iyọọda D> 0.5mm Iwọn ati Ijin;
Awọn dojuijako: Kò;
Abawọn: Ko si
Wafer eti: Chamfer;
Ipari oju-ilẹ: Polish Double Side, Si Face CMP;
Iṣakojọpọ: Kasẹti-wafer pupọ Tabi Apoti Wafer Kanṣoṣo;
Awọn iṣoro lọwọlọwọ ni igbaradi ti awọn kirisita akọkọ 200mm 4H-SiC
1) Igbaradi ti awọn kirisita irugbin 200mm 4H-SiC ti o ga julọ;
2) Aaye iwọn otutu ti o tobi ti kii ṣe iṣọkan ati iṣakoso ilana iparun;
3) Awọn gbigbe ṣiṣe ati itankalẹ ti gaseous irinše ni largeize gara idagbasoke awọn ọna šiše;
4) Crystal cracking ati abawọn abawọn ti o ṣẹlẹ nipasẹ iwọn ti o tobi ju wahala iwọn otutu.
Lati bori awọn italaya wọnyi ati gba didara 200mm SiC waferssolutions ti wa ni dabaa:
Ni awọn ofin ti 200mm irugbin gara igbaradi, aaye ṣiṣan iwọn otutu ti o yẹ, ati apejọ ti o pọ si ni a ṣe iwadi ati ti a ṣe apẹrẹ lati mu didara gara gara ati iwọn ti o pọ si; Bibẹrẹ pẹlu 150mm SiC se: d crystal, gbejade aṣetunṣe irugbin gara lati faagun SiC cristasize ni diėdiė titi yoo fi de 200mm; Nipasẹ idagbasoke kirisita pupọ ati ilana ilana, ṣe ilọsiwaju didara gara ni agbegbe ti o npo kirisita, ki o mu didara awọn kirisita irugbin 200mm dara.
Ni awọn ofin ti 200mm kirisita conductive ati igbaradi sobusitireti, iwadii ti iṣapeye iwọn otutu feld ati apẹrẹ aaye ṣiṣan fun iwọn kristali nla, ṣe idagbasoke 200mm conductive SiC crystal, ati iṣakoso isokan doping. Lẹhin sisẹ ti o ni inira ati ṣiṣe apẹrẹ ti gara, 8-inchelectrically conductive 4H-SiC ingot pẹlu iwọn ila opin kan ni a gba. Lẹhin gige, lilọ, didan, sisẹ lati gba SiC 200mm wafers pẹlu sisanra ti 525um tabi bẹ bẹ