Chithunzi: Mainjiniya wa IVWorks akulinganiza gwero la plasma kuti ligwiritsidwe ntchito mu dongosolo la Hybrid MBE, lomwe limathandizira kukula kwa GaN epitaxial komwe kumakhala kofanana kwambiri komanso kwapamwamba.
Transistor ya gallium nitride (GaN) high-electron-mobility transistor (HEMT) yomwe imagwiritsa ntchito ukadaulo wa reGaN wosankha regrowth wa IVWorks Co Ltd wa ku Daejeon, yakhala transistor yoyamba ya GaN padziko lonse lapansi yomwe ikupeza ma oscillation frequency ambiri (f).kuchuluka) yopitilira 700GHz. Izi zinawonetsedwa kudzera mu chipangizo cha 45nm GaN HEMT chopangidwa ndi gulu lofufuza la pulofesa Dae-hyun Kim ku Sukulu ya Uinjiniya wa Zamagetsi ku Kyungpook National University ndipo chinawululidwa pa 18 Juni pa Msonkhano wa 2026 wa IEEE/JSAP pa VLSI Technology & Circuits ku Honolulu, Hawaii, USA.
Gulu lofufuza linapanga transistor ya GaN yokhala ndi chipata cha 45nm kutalika ndipo inapeza mbiri yabwino kwambiri.kuchulukaya 742GHz, zomwe zinakhazikitsa muyezo watsopano wa magwiridwe antchito a RF mu ukadaulo wa transistor wa GaN. Chipangizochi chinapezanso kuchuluka kwa ma frequency metric (favg) a 497GHz, mtengo wapamwamba kwambiri womwe wanenedwa mpaka pano pa ukadaulo uliwonse wa transistor wa GaN. Zotsatirazi zikuwonetsa kuti ma semiconductor a GaN ali ndi mpikisano wokwanira ngakhale munthawi ya ma frequency apamwamba kwambiri ndipo akhoza kukhala nsanja yothandiza yama system amagetsi a sub-terahertz ndi terahertz amtsogolo, akutero IVWorks.
Ngakhale ma transistors okhala ndi indium phosphide (InP) akhala akulamulira kwa nthawi yayitali ma frequency a sub-terahertz chifukwa cha mawonekedwe awo abwino kwambiri oyendera ma electron, mphamvu zawo zochepa zochepetsera kufalikira kwa magetsi zimachepetsa mphamvu yotulutsa ndi kukula kwa makina. Mosiyana ndi zimenezi, GaN imapereka kuphatikiza kwapadera kwa magetsi amphamvu kwambiri, mphamvu zambiri, komanso kulimba kwabwino kwa kutentha, zomwe zimawapangitsa kukhala okopa ogwiritsa ntchito ma frequency apamwamba komanso amphamvu kwambiri m'badwo wotsatira. Komabe, kukwaniritsa magwiridwe antchito apamwamba kwambiri ndi GaN kwakhalabe vuto lalikulu. Pofuna kuthana ndi zopingazi, gulu lofufuzali linagwiritsa ntchito njira yapamwamba ya chipata cha 45nm ndi kapangidwe kabwino ka zida kuti ziwonjezere magwiridwe antchito apamwamba kwambiri.
Chinthu chofunika kwambiri chinali ukadaulo wosankha wa IVWorks wa reGaN. Wopangidwa ndi IVWorks yokha, reGaN imakulanso mosankha mtundu wa n-type GaN m'malo oyambira ndi otayira madzi, zomwe zimachepetsa kwambiri kukana kwa kukhudzana. Monga mnzake wofufuza nawo mu kafukufukuyu, IVWorks idawonetsa zomwe zimanenedwa kuti ndizofanana bwino kwambiri pa wafer yonse ya mainchesi 4 ndipo idapeza kubwerezabwereza kwabwino kwambiri. Kuphatikiza apo, kampaniyo idachepetsa kukana kwa regrowth interface (R).mkati) mpaka 0.027Ω-mm, kuyandikira malire a chiphunzitso omwe angatheke pa kuchuluka koyenera kwa chonyamulira.
"Kafukufukuyu akukankhira malire a magwiridwe antchito a RF a GaN HEMTs pamlingo watsopano ndipo akuwonetsa kuthekera kwa ma semiconductor a GaN pakugwiritsa ntchito ma frequency apamwamba kwambiri kudzera mu chiwonetsero choyamba padziko lonse cha GaN HEMT yokhala ndi h yoposa 700GHz," akutero pulofesa Dae-hyun Kim. "Kafukufukuyu ndi wofunika kwambiri ngati chitsanzo chopambana cha mgwirizano wamakampani ndi maphunziro, kuphatikiza kukula kwapamwamba kwa epitaxial ndi ukadaulo wokonzanso kuchokera kumakampani ndi ukadaulo wa yunivesite pakufufuza zida ndi ma circuit," akuwonjezera.
"Pogwiritsa ntchito izi, tikukonzekera kupititsa patsogolo chitukuko cha zida zamagetsi za GaN za m'badwo watsopano zomwe zikuyang'ana kwambiri mapulogalamu a terahertz-frequency pa kulumikizana kwa 6G ndi ukadaulo wapamwamba wodzitetezera."
IVWorks ikunena kuti kupambana kumeneku kukuwonetsanso kuthekera kwakukulu kwa ukadaulo wa GaN kufalikira kupitirira RF yachikhalidwe ndi zamagetsi zamagetsi kupita ku mapulogalamu atsopano a sub-terahertz ndi terahertz, kuphatikiza kulumikizana kwa 6G, makina apamwamba a radar, kulumikizana kwa satellite, ndi zida zamagetsi zodzitetezera za m'badwo wotsatira.
“ReGaN ndi ukadaulo wofunikira womwe wadutsa kale ziyeneretso zabwino ku fakitale yayikulu ndipo wagwiritsidwa ntchito popanga zinthu zambiri,” akutero CEO wa IVWorks, Young-kyun Noh. “Kupambana kumeneku kukuwonetsa kuti nsanja yathu ya reGaN yochokera ku Hybrid-MBE sikuti ndi yokonzeka kupanga zokha komanso ndi ukadaulo wofunikira kwambiri wamagetsi a sub-terahertz ndi terahertz GaN a m'badwo wotsatira,” akuwonjezera. “Tikunyadira kuona ukadaulo wa IVWorks ukuthandiza pakukula kwa kafukufuku padziko lonse lapansi.”
Nthawi yotumizira: Julayi-06-2026