SiC silicon carbidentaus ntawv hais txog cov cuab yeej ua los ntawm silicon carbide ua cov khoom siv raw.
Raws li cov khoom sib txawv, nws tau muab faib ua cov khoom siv hluav taws xob silicon carbide thiabsemi-insulated silicon carbideCov khoom siv RF.
Cov ntaub ntawv tseem ceeb thiab kev siv ntawm silicon carbide
Lub ntsiab zoo ntawm SiC tshajCov ntaub ntawvyog:
SiC muaj qhov sib txawv ntawm 3 npaug ntawm Si, uas tuaj yeem txo qhov to thiab ua kom qhov kub thiab txias.
SiC muaj 10 npaug ntawm lub zog tawg ntawm Si, tuaj yeem txhim kho qhov ceev tam sim no, kev ua haujlwm zaus, tiv taus hluav taws xob muaj peev xwm thiab txo qhov kev poob qis, tsim nyog rau kev siv hluav taws xob ntau.
SiC muaj ob zaug ntawm electron saturation drift ceev ntawm Si, yog li nws tuaj yeem ua haujlwm ntawm ntau zaus.
SiC muaj 3 npaug ntawm thermal conductivity ntawm Si, zoo dua tshav kub dissipation kev ua tau zoo, tuaj yeem pab txhawb zog siab ceev thiab txo cov cua kub dissipation uas yuav tsum tau, ua rau cov cuab yeej sib zog.
Conductive substrate
Conductive substrate: Los ntawm kev tshem tawm ntau yam impurities nyob rau hauv lub siv lead ua, tshwj xeeb tshaj yog nyob rau theem impurities, kom ua tiav cov intrinsic siab resistivity ntawm cov siv lead ua.
Kev coj uasilicon carbide substrateSiC wafer
Cov khoom siv hluav taws xob silicon carbide yog los ntawm kev loj hlob ntawm silicon carbide epitaxial txheej ntawm cov khoom siv hluav taws xob, cov ntawv silicon carbide epitaxial tau ua tiav, suav nrog kev tsim cov Schottky diodes, MOSFET, IGBT, thiab lwm yam., feem ntau yog siv hauv tsheb fais fab, photovoltaic zog. tiam, rail transit, data center, them thiab lwm yam infrastructure. Cov txiaj ntsig kev ua haujlwm yog raws li hauv qab no:
Txhim kho cov yam ntxwv siab. Lub zog hluav taws xob tawg ntawm silicon carbide yog ntau dua 10 npaug ntawm silicon, uas ua rau lub siab tsis kam ntawm silicon carbide cov cuab yeej muaj zog ntau dua li ntawm cov khoom sib npaug silicon.
Cov yam ntxwv kub zoo dua. Silicon carbide muaj cov thermal conductivity ntau dua li silicon, uas ua rau cov cuab yeej cua sov dissipation yooj yim dua thiab txwv kev ua haujlwm kub siab dua. Kev kub siab ua haujlwm tuaj yeem ua rau muaj kev nce ntxiv hauv lub zog ceev, thaum txo cov kev xav tau ntawm lub tshuab ua kom txias, kom lub davhlau ya nyob twg tuaj yeem ua kom hnyav dua thiab me me.
Tsawg zog siv. ① Silicon carbide ntaus ntawv muaj kev tiv thaiv tsawg heev thiab tsis tshua muaj kev poob; (2) Cov dej ntws tam sim no ntawm cov khoom siv silicon carbide txo qis dua li ntawm cov khoom siv silicon, yog li txo qis zog; ③ Tsis muaj qhov tshwm sim tam sim no nyob rau hauv cov txheej txheem tig tawm ntawm cov khoom siv silicon carbide, thiab qhov kev hloov pauv tsis tshua muaj, uas ua rau muaj kev hloov pauv ntau zaus ntawm kev siv tswv yim.
Semi-insulated SiC substrate: N doping yog siv los tswj qhov kev tiv thaiv ntawm cov khoom siv hluav taws xob los ntawm kev ntsuas cov kev sib raug zoo ntawm nitrogen doping concentration, kev loj hlob tus nqi thiab siv lead ua resistivity.
High purity semi-insulating substrate khoom
Semi-insulated silicon carbon-raws li RF cov cuab yeej yog ntxiv los ntawm kev loj hlob gallium nitride epitaxial txheej ntawm semi-insulated silicon carbide substrate los npaj silicon nitride epitaxial 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 tiv thaiv kev siv, kev xa cov ntaub ntawv, aerospace.
Lub saturated electron drift tus nqi ntawm silicon carbide thiab gallium nitride cov ntaub ntawv yog 2.0 thiab 2.5 npaug ntawm silicon feem, yog li qhov kev khiav hauj lwm zaus ntawm silicon carbide thiab gallium nitride khoom yog ntau dua li ntawm cov tsoos silicon li. Txawm li cas los xij, cov khoom siv gallium nitride muaj qhov tsis zoo ntawm cov cua sov tsis zoo, thaum silicon carbide muaj cov cua sov zoo thiab cov thermal conductivity, uas tuaj yeem ua rau cov cua sov tsis zoo ntawm cov khoom siv gallium nitride, yog li kev lag luam siv cov khoom siv hluav taws xob semi-insulated silicon carbide ua cov substrate. , thiab gan epitaxial txheej yog zus rau ntawm silicon carbide substrate los tsim RF khoom.
Yog tias muaj kev ua txhaum cai, hu rau rho tawm
Post lub sij hawm: Lub Xya hli ntuj-16-2024