Cov thev naus laus zis tshiab transistor tuaj yeem ua kom muaj peev xwm ua kom sov tau ntau dua ob zaug

Raws li cov lus ceeb toom, pab pawg tshawb fawb ntawm Osaka Metropolitan University tau siv pob zeb diamond, cov khoom siv hluav taws xob zoo tshaj plaws hauv ntiaj teb, ua lub substrate los tsim gallium nitride (GaN) transistors, uas muaj ntau tshaj ob npaug ntawm cov cua kub dissipation peev ntawm cov tsoos transistors. Nws tau tshaj tawm tias cov transistor tuaj yeem siv tsis tau tsuas yog hauv 5G kev sib txuas lus hauv paus chaw nres tsheb, huab cua radars, kev sib txuas lus satellite thiab lwm yam kev lag luam, tab sis kuj nyob rau hauv microwave cua sov, plasma ua thiab lwm yam. Cov kev tshawb fawb tshawb fawb tshiab tau tshaj tawm tsis ntev los no hauv phau ntawv xov xwm "Small".

Nrog rau qhov nce me me ntawm cov khoom siv hluav taws xob semiconductor, cov teeb meem xws li kev siv hluav taws xob ntau ntxiv thiab kev tsim hluav taws xob tau tshwm sim, uas tuaj yeem cuam tshuam rau kev ua haujlwm, kev ntseeg siab, thiab kev ua neej ntawm cov khoom siv no. Nws tau nkag siab tias gallium nitride (GaN) ntawm pob zeb diamond nthuav tawm qhov kev cia siab zoo li cov khoom siv semiconductor tiam tom ntej, vim tias ob qho tib si cov ntaub ntawv muaj qhov dav bandgaps uas ua kom muaj cov conductivity siab thiab siab thermal conductivity ntawm pob zeb diamond, muab tso rau lawv ua cov cua kub zoo heev.

Yav dhau los, cov kws tshawb fawb tau sim tsim GaN cov qauv ntawm cov pob zeb diamond los ntawm kev sib txuas ob yam nrog qee hom kev hloov pauv lossis cov nplaum txheej, tab sis ob qho tib si, txheej txheej ntxiv cuam tshuam nrog thermal conductivity ntawm pob zeb diamond, cuam tshuam qhov tseem ceeb ntawm kev sib xyaw ua ke ntawm GaN pob zeb diamond. Hauv kev tshawb fawb zaum kawg, cov kws tshawb fawb los ntawm Osaka Public University tau ua tiav cov khoom siv hluav taws xob ntau hauv GaN siv pob zeb diamond ua substrate. Lub tshav kub dissipation kev ua tau zoo ntawm cov thev naus laus zis tshiab no yog ntau tshaj li ob zaug ntawm qhov zoo sib xws ntawm cov transistors uas tsim los ntawm silicon carbide (SiC) substrates.

Txhawm rau kom ua kom lub siab thermal conductivity ntawm pob zeb diamond, cov kws tshawb fawb tau koom ua ke ib txheej ntawm cubic silicon carbide ntawm GaN thiab pob zeb diamond. Cov thev naus laus zis no txo ​​cov thermal tsis kam ntawm lub interface thiab txhim kho cov cua sov ua haujlwm. Cov thev naus laus zis tshiab no muaj peev xwm txo qis carbon dioxide emissions thiab muaj peev xwm hloov pauv txoj kev loj hlob ntawm lub zog thiab xov tooj cua zaus cov khoom siv hluav taws xob los ntawm kev txhim kho kev tswj xyuas thermal.