SiC silicon carbidelub cuab yeej hais txog lub cuab yeej ua los ntawm silicon carbide ua cov khoom siv raw.
Raws li cov khoom sib txawv tsis kam, nws muab faib ua cov khoom siv hluav taws xob silicon carbide conductive thiabsilicon carbide semi-insulatedCov khoom siv RF.
Cov ntaub ntawv tseem ceeb thiab daim ntawv thov ntawm silicon carbide
Cov txiaj ntsig tseem ceeb ntawm SiC dhauCov ntaub ntawv Siyog:
SiC muaj qhov sib txawv ntawm 3 npaug ntawm Si, uas tuaj yeem txo qhov xau thiab ua rau kom muaj kev kam rau siab kub dua.
SiC muaj 10 npaug ntawm lub zog tawg ntawm Si, tuaj yeem txhim kho qhov ceev tam sim no, zaus ua haujlwm, tiv taus lub zog hluav taws xob thiab txo qhov poob ntawm qhov tawm, tsim nyog dua rau cov ntawv thov hluav taws xob siab.
SiC muaj ob npaug ntawm qhov ceev ntawm electron saturation drift ntawm Si, yog li nws tuaj yeem ua haujlwm ntawm qhov zaus siab dua.
SiC muaj 3 npaug ntawm cov thermal conductivity ntawm Si, kev ua haujlwm zoo dua ntawm kev tso cua sov, tuaj yeem txhawb nqa lub zog ceev ceev thiab txo qhov xav tau kev tso cua sov, ua rau lub cuab yeej sib dua.
Cov khoom siv hluav taws xob
Cov khoom siv hluav taws xob: Los ntawm kev tshem tawm ntau yam tsis huv hauv cov siv lead ua, tshwj xeeb tshaj yog cov tsis huv qib qis, kom ua tiav qhov siab tiv taus ntawm cov siv lead ua.
Ua tau zoosilicon carbide substrateSiC wafer
Cov khoom siv hluav taws xob silicon carbide conductive yog los ntawm kev loj hlob ntawm silicon carbide epitaxial txheej ntawm cov khoom siv hluav taws xob conductive, daim ntawv silicon carbide epitaxial yog ua tiav ntxiv, suav nrog kev tsim cov Schottky diodes, MOSFET, IGBT, thiab lwm yam, feem ntau yog siv rau hauv tsheb fais fab, photovoltaic fais fab tiam, kev thauj mus los ntawm tsheb ciav hlau, chaw khaws ntaub ntawv, kev them nyiaj thiab lwm yam khoom siv. Cov txiaj ntsig kev ua tau zoo yog raws li nram no:
Cov yam ntxwv siab dua. Lub zog hluav taws xob tawg ntawm silicon carbide yog ntau dua 10 npaug ntawm silicon, uas ua rau lub zog siab ntawm silicon carbide cov khoom siv siab dua li ntawm cov khoom siv silicon sib npaug.
Cov yam ntxwv kub zoo dua. Silicon carbide muaj cov thermal conductivity siab dua li silicon, uas ua rau lub cuab yeej cua sov dissipation yooj yim dua thiab qhov txwv ua haujlwm kub siab dua. Kev tiv taus kub siab tuaj yeem ua rau muaj kev nce ntxiv ntawm lub zog ceev, thaum txo qhov xav tau ntawm lub kaw lus txias, yog li lub davhlau ya nyob twg tuaj yeem sib dua thiab me dua.
Kev siv hluav taws xob tsawg dua. ① Silicon carbide device muaj qhov tsis kam rau hluav taws xob tsawg heev thiab qhov poob qis; (2) Cov hluav taws xob xau ntawm silicon carbide devices raug txo qis dua li ntawm silicon devices, yog li txo qhov poob hluav taws xob; ③ Tsis muaj qhov tshwm sim tam sim no hauv cov txheej txheem tig-tawm ntawm silicon carbide devices, thiab qhov poob hloov pauv qis, uas ua rau qhov zaus hloov pauv ntawm cov ntawv thov siv tau zoo heev.
Cov khoom siv SiC semi-insulated
Cov khoom siv SiC semi-insulated: N doping yog siv los tswj qhov resistivity ntawm cov khoom conductive los ntawm kev ntsuas qhov kev sib raug zoo ntawm nitrogen doping concentration, kev loj hlob thiab crystal resistivity.
Cov khoom siv semi-insulating substrate purity siab
Cov khoom siv RF semi-insulated silicon carbon-based yog ua ntxiv los ntawm kev loj hlob gallium nitride epitaxial txheej ntawm semi-insulated silicon carbide substrate los npaj silicon nitride epitaxial daim ntawv, suav nrog HEMT thiab lwm yam gallium nitride RF khoom siv, feem ntau yog siv hauv 5G kev sib txuas lus, kev sib txuas lus hauv tsheb, kev siv tiv thaiv, kev xa cov ntaub ntawv, aerospace.
Tus nqi electron drift ntawm silicon carbide thiab gallium nitride cov ntaub ntawv yog 2.0 thiab 2.5 npaug ntawm silicon, yog li qhov zaus ua haujlwm ntawm silicon carbide thiab gallium nitride li qub yog ntau dua li ntawm cov khoom siv silicon ib txwm muaj. Txawm li cas los xij, cov khoom siv gallium nitride muaj qhov tsis zoo ntawm kev tiv taus cua sov tsis zoo, thaum silicon carbide muaj kev tiv taus cua sov zoo thiab thermal conductivity, uas tuaj yeem ua rau qhov tsis zoo ntawm kev tiv taus cua sov ntawm gallium nitride li qub, yog li kev lag luam siv semi-insulated silicon carbide ua lub substrate, thiab gan epitaxial txheej yog loj hlob ntawm silicon carbide substrate los tsim cov khoom siv RF.
Yog tias muaj kev ua txhaum cai, tiv tauj rho tawm
Lub sijhawm tshaj tawm: Lub Xya Hli-16-2024