Amakuru ku nganda: Ikoranabuhanga rya IVWorks'reGaN ryemerera 742GHz GaN HEMT ya mbere

Ifoto: Injeniyeri wa IVWorks apima isoko ya plasma kugira ngo ikoreshwe muri sisitemu ya Hybrid MBE, ishyigikira gukura kwa GaN epitaxial mu buryo bungana kandi bwiza.

Transistor ya gallium nitride (GaN) ifite electron-mobility high-mobility (HEMT) irimo ikoranabuhanga rya reGaN selective regrowth rya IVWorks Co Ltd yo muri Daejeon, Koreya y'Epfo yabaye transistor ya mbere ku isi ya GaN igeze ku muvuduko ntarengwa wo kuzenguruka (f)._{umubare ntarengwa}) irenga 700GHz. Ibi byagaragajwe binyuze mu gikoresho cya GaN HEMT cya 45nm cyakozwe n'itsinda ry'abashakashatsi rya Porofeseri Dae-hyun Kim mu Ishuri ry'Ubwubatsi bw'Ibyuma muri Kaminuza y'Igihugu ya Kyungpook, kandi byashyizwe ahagaragara ku ya 18 Kamena mu nama ya IEEE/JSAP ya 2026 ku Ikoranabuhanga n'Imiyoboro ya VLSI i Honolulu, muri Hawayi, muri Amerika.

Itsinda ry’abashakashatsi ryakoze transistor ya GaN ifite uburebure bwa 45nm, maze igera ku rwego rwo hejuru cyane._{umubare ntarengwa}ya 742GHz, bishyiraho igipimo gishya cy’imikorere ya RF mu ikoranabuhanga rya transistor rya GaN. Iki gikoresho kandi cyageze ku gipimo cy’impuzandengo ya frequence (favg) ya 497GHz, agaciro kanini kavuzwe kugeza ubu ku ikoranabuhanga rya transistor rya GaN. Ibi bisubizo bigaragaza ko semiconductor za GaN zifite ubushobozi bwo guhangana n’imikorere ihagije ndetse no mu gihe cy’ingufu nyinshi kandi zishobora kuba urubuga rwiza ku buryo bw’ejo hazaza bwa sisitemu za elegitoroniki za sub-terahertz na terahertz, nk’uko IVWorks ibivuga.

Nubwo transistors zishingiye kuri indium phosfide (InP) zimaze igihe kinini ziganza imikorere ya sub-terahertz bitewe n’imiterere yazo idasanzwe yo gutwara electron, voltage yazo yo hasi cyane igabanya imbaraga zo gutanga no kwaguka kwa sisitemu. Mu buryo bunyuranye, GaN itanga uruhurirane rwihariye rw’amashanyarazi yo hasi cyane, ubucucike bw’ingufu nyinshi, n’ubushyuhe bwiza cyane, bigatuma zikurura abakandida bo mu gisekuru gitaha bakoresha frequency nyinshi n’ingufu nyinshi. Ariko, kugera ku musaruro mwiza cyane ukoresheje GaN byakomeje kuba ikibazo gikomeye. Kugira ngo batsinde izi mbogamizi, itsinda ry’abashakashatsi ryakoresheje inzira igezweho ya 45nm yo kwinjira no kunoza imiterere y’ibikoresho kugira ngo bongere imikorere myiza.

Ikintu cy'ingenzi cyafashije ni ikoranabuhanga rya IVWorks ryo gusana reGaN. Ryakozwe na IVWorks gusa, reGaN ikongera gukura cyane mu bwoko bwa n-type GaN mu duce dukomokamo n'aho itembera, bigabanya cyane ubushobozi bwo gukorana n'imashini. Nk'umufatanyabikorwa mu bushakashatsi muri ubu bushakashatsi, IVWorks yagaragaje ko ari uburyo bwiza bwo gukora ibintu muri wafer yose ya santimetero 4 kandi igera ku buryo bwo kongera kubyara. Byongeye kandi, ikigo cyagabanyije ubushobozi bwo kongera gukura (R)._ikigo) kugeza kuri 0.027Ω-mm, kwegera umupaka w’ibitekerezo ushobora kugerwaho ku gipimo cy’umutwaro gihuye.

Porofeseri Dae-hyun Kim agira ati: “Ubu bushakashatsi butuma ubushobozi bwa GaN HEMTs mu mikorere ya RF buzamuka cyane kandi bugaragaza ubushobozi bwa GaN semiconductors mu gukoresha frequency nyinshi cyane binyuze mu kwerekana bwa mbere ku isi GaN HEMT ifite umuvuduko wa h urenga 700GHz.” Yongeraho ati: “Ubu bushakashatsi bufite akamaro cyane nk'urugero rwiza rw'ubufatanye hagati y'inganda n'amashuri makuru, buhuza iterambere ry'iterambere rya epitaxial n'ikoranabuhanga ryo kongera gukura riva mu nganda hamwe n'ubuhanga bwa kaminuza mu bushakashatsi ku bikoresho no ku nsinga.”

“Dushingiye kuri ibi byagezweho, turateganya gukomeza kwihutisha iterambere ry’ibikoresho by’ikoranabuhanga bya GaN byo mu gisekuru gitaha byibanda ku gukoresha terahertz-frequency mu itumanaho rya 6G n’ikoranabuhanga rigezweho ryo kurinda.”

IVWorks ivuga ko ibyo byagezweho bigaragaza ko ikoranabuhanga rya GaN rikomeje kwiyongera mu kwagura ibikorwa birenga RF isanzwe n’ibikoresho by’ikoranabuhanga bikoresha ikoranabuhanga mu buryo bwa "sub-terahertz" na "terahertz", harimo itumanaho rya 6G, sisitemu zigezweho za radar, itumanaho rya satelite, n’ibikoresho by’ikoranabuhanga byo mu rwego rwo hejuru mu gihe kizaza.

“ReGaN ni ikoranabuhanga ry’ingenzi ryamaze gutsinda impamyabushobozi y’ubuziranenge mu ruganda runini kandi ryakoreshejwe mu gukora ibikoresho byinshi,” uyu ni umuyobozi mukuru wa IVWorks, Young-kyun Noh. “Iyi ntambwe iragaragaza ko urubuga rwacu rwa reGaN rushingiye kuri Hybrid-MBE rutari ruteguye gukora gusa ahubwo ko ari n’ikoranabuhanga ry’ingenzi rifasha ibikoresho by’ikoranabuhanga bya sub-terahertz na terahertz GaN byo mu gisekuru gitaha,” yongeraho. “Twishimiye kubona ikoranabuhanga rya IVWorks rigira uruhare mu iterambere ry’ubushakashatsi ku isi.”