Impamvu High-Purity SiC Wafers ari ingenzi cyane ku bikoresho by'ikoranabuhanga bikoresha ingufu z'iki gihe gitaha

1. Kuva kuri Silicon kugera kuri Silicon Carbide: Impinduka mu buryo bw'amashanyarazi mu by'ikoranabuhanga

Mu gihe kirenga mirongo itanu cy'ikinyejana, silikoni yabaye inkingi y'amashanyarazi mu by'ikoranabuhanga. Ariko, uko imodoka zikoresha amashanyarazi, sisitemu z'ingufu zisubira, ikigo cy'amakuru cya AI, n'ibikoresho byo mu kirere bigenda bitera imbere bigana ku muvuduko mwinshi w'amashanyarazi, ubushyuhe bwinshi, n'ubucucike bw'ingufu nyinshi, silikoni irimo kwegera imipaka yayo y'ibanze.

Karubide ya Silicon (SiC), semiconductor ifite umurambararo munini ifite umurambararo wa ~3.26 eV (4H-SiC), yagaragaye nk'igisubizo ku rwego rw'ibikoresho aho kuba igisubizo ku rwego rw'uruziga. Nyamara, inyungu nyayo y'imikorere y'ibikoresho bya SiC ntigenwa gusa n'ibikoresho ubwabyo, ahubwo igenwa n'ubuziranenge bwabyo.agace ka SiCibikoresho byubatsweho.

Mu bikoresho by'ikoranabuhanga bikoresha ingufu z'iki gihe gitaha, wafer za SiC zifite isuku nyinshi si ibintu by'agaciro—ni ngombwa cyane.

2. Icyo "Ubuziranenge Buhanitse" busobanura mu by'ukuri muri SiC Wafers

Mu bijyanye na wafer za SiC, ubuziranenge burenze kure imiterere ya shimi. Ni igipimo cy'ibikoresho byinshi, harimo:

• Ubunini bw'umuti utari ugenewe abantu benshi cyane

• Gukuraho imyanda y'icyuma (Fe, Ni, V, Ti)

• Kugenzura inenge z'ingingo z'imbere (imyanya y'ubusamo, antisites)

• Kugabanya ubusembwa bwa crystallographic bwagutse

Ndetse n'imyanda iboneka ku rwego rwa miliyari imwe (ppb) ishobora kwinjiza ingufu nyinshi mu mwanya wayo, igakora nk'imitego yo gutwara ibintu cyangwa inzira zo gusohora amazi. Bitandukanye na silicon, aho kwihanganira imyanda biba byiza cyane, umwanya munini wa SiC wongera ingaruka z'amashanyarazi kuri buri kibazo.

3. Ubuziranenge Buhanitse na Fiziki y'Ikoranabuhanga Rihanitse

Akamaro gakomeye k'ibikoresho by'amashanyarazi bya SiC ni ubushobozi bwabyo bwo kwihanganira amashanyarazi akabije—afite agaciro kanini ka silicon inshuro icumi. Ubu bushobozi bushingiye cyane ku gukwirakwiza amashanyarazi mu buryo bumwe, ibyo bikaba bisaba:

• Ubushobozi bwo guhangana bungana cyane

• Igihe cy'ubuzima bw'umutwara ibintu gihamye kandi gishoboka

• Ubucucike buke bw'imitego yo mu rwego rwo hejuru

Imyanda ibangamira iri teraniro. Ihindura amashanyarazi mu gace runaka, bigatuma:

• Gucika intege mbere y'igihe

• Umuyoboro w'amazi wiyongera

• Kugabanuka kw'ubwirinzi bw'amashanyarazi yo guhagarika

Mu bikoresho bifite voltage nyinshi cyane (≥1200 V, ≥1700 V), gucika intege kw'ibikoresho akenshi bituruka ku inenge imwe iterwa n'umwanda, ntabwo biterwa n'ubwiza bw'ibikoresho bisanzwe.

4. Guhagarara neza mu bushyuhe: Ubuziranenge nk'ahantu hatagira ubushyuhe hagaragara

SiC izwiho gutwara ubushyuhe bwinshi n'ubushobozi bwo gukora hejuru ya 200 °C. Ariko, imyanda ikora nk'ahantu ho gukwirakwiza ubushyuhe, ikangiza ubwikorezi bw'ubushyuhe ku rwego rwa mikorosikopi.

Wafer za SiC zifite isuku nyinshi zituma:

• Ubushyuhe bwo mu ihuriro bugabanuka ku bucucike bw'ingufu bumwe

• Kugabanya ibyago byo guhumeka kw'ubushyuhe

• Igihe kirekire cy'igikoresho mu gihe cy'ubushyuhe bukabije

Mu buryo bufatika, ibi bivuze sisitemu nto zo gukonjesha, module zoroheje z'amashanyarazi, hamwe n'imikorere myiza yo ku rwego rwa sisitemu—ibipimo by'ingenzi mu byuma bikoresha amashanyarazi n'ibikoresho by'ikoranabuhanga byo mu kirere.

5. Ubuziranenge n'umusaruro w'ibikoresho: Ubukungu bw'inenge

Uko inganda za SiC zigenda zigana ku duce twa santimetero 200 na santimetero 200, ubucucike bw'ibinure bugenda buhinduka mu buryo butagororotse ugereranyije n'ubuso bwa wafer. Muri ubu buryo, ubuziranenge buhinduka impinduka mu bukungu, ntabwo ari ubwa tekiniki gusa.

Wafers nziza cyane zitanga:

• Uburinganire bw'urwego rwo hejuru rwa epitaxial

• Ireme rya MOS ryarushijeho kuba ryiza

• Umusaruro uri hejuru cyane ku gikoresho kimwe cya wafer

Ku nganda, ibi bivuze ko ikiguzi cya buri ampere kiri hasi, bikihutisha ikoreshwa rya SiC mu bikorwa bihendutse nko mu gushyushya amashanyarazi no mu nganda.

6. Gukoresha Umuraba Ukurikira: Kurenga Ibikoresho Bisanzwe by'Ingufu

Wafer za SiC zifite isuku nyinshi ntabwo ari ingenzi gusa kuri MOSFET na diode za Schottky zo muri iki gihe. Ni zo zifasha mu miterere y'ejo hazaza, harimo:

• Ibice bigabanya umuvuduko w'amashanyarazi byihuta cyane

• Ingufu za IC zifite imbaraga nyinshi ku bigo by'amakuru bya AI

• Ibikoresho by'ingufu zikomeye zikoreshwa mu butumwa bw'ikirere

• Ukwihuza kwa monolithic kw'imbaraga n'imikorere yo kumva

Izi porogaramu zisaba ubushobozi buhanitse bwo kumenya neza ibintu, aho ubuziranenge ari bwo shingiro ry’uburyo fiziki y’ibikoresho bigezweho ishobora gutegurwa neza.

7. Umwanzuro: Ubuziranenge nk'uburyo bwo gukoresha ikoranabuhanga mu ngamba

Mu bikoresho by'ikoranabuhanga byo mu gisekuru gitaha, inyungu mu mikorere ntizikiboneka ahanini mu buryo bw'ikoranabuhanga bwo gushushanya urusobe rw'amashanyarazi. Bituruka ku rwego rumwe rwimbitse—ku miterere ya atome ya wafer ubwayo.

Uduce twa SiC tworoshye cyane duhindura karubide ya silikoni iva ku bikoresho byiza ikayihindura urubuga rworoshye, rwizewe kandi rufite akamaro ku isi ikoresha amashanyarazi. Uko urugero rw'amashanyarazi rugenda rwiyongera, ingano ya sisitemu igabanuka, kandi intego zo gukora neza zikarushaho kwiyongera, ubuziranenge buhinduka ikintu kidasobanutse kigaragaza intsinzi.

Muri ubu buryo, wafer za SiC zifite isuku nyinshi si ibice gusa—ni ibikorwa remezo by’ingenzi mu gihe kizaza cy’ibikoresho by’ikoranabuhanga bikoresha ingufu.