:(60736033);(XA-AM-200703):2008-10-10:(1977-),,,,,GaN。1,(HEMT)。(2DEG),2DEG、。GaN(AlN,InN)HEMT。2GaAs,GaN、、、、,GaNHEMT、、、;,HEMT2DEG,GaNHEMT。,。,GaNHEMT、、;、、,GaNHEMT。1993GaNHEMT[1],,,,“,”。21,GaNHEMTAlGaN/GaN,,GaNHEMT,。。2GaNHEMT1GaNHEMT。,AlGaN/GaN2DEG,GaNHEMT。GaNHEMT:①,;②;③;④;⑤,3;⑥,fTfmax,,;⑦。GaNHEMT,GaN,(,,710071):GaN(HEMT)GaN,3。GaNHEMT,GaNHEMT,GaNHEMT。:;;:TN32:A:1000-100X(2008)12-0063-04CurrentResearchStatusofGaNHighElectronMobilityTransistorsZHANGJin-feng,HAOYue(KeyLabofMinistryofEducationforWideBand-GapSemiconductorMaterialsandDevices,XidianUniversity,Xi’an710071,China)Abstract:GaNhighelectronmobilitytransistor(HEMT)isthemajorformofGaNmicrowavepowerdevices,andalsoafo-cusintheinternationaldevelopmentandcompeitioninthethirdgenerationsemiconductortechnology.Thepapersumma-rizestheresearchapproachesthroughmaterialstructuredesignanddevicestructuredesignintheseyearstooptimizetheGaNHEMTperformanceaimingtofulfillthegoalcharacteristicandeliminatecurrentcollapse.Themicrowavepowerper-formanceofstate-of-the-artGaNHEMTshomeandabroadispresented.Keywords:transistor;electronmobility;characteristicFoundationProject:SupportedbytheKeyProgramoftheNationalNaturalScienceFoundationofChina(No.60736033);Xi’anAppliedMaterialsInnovationFund(No.XA-AM-200703)PowerElectronicsVol.42No.12December,2008421220081263PowerElectronicsVol.42No.12December,20084212200812,:,,DPoEPa。,,(),。。,,。,,RFRF,DPoEPa,。,。。3GaNHEMT3.1GaNHEMT(GaN)SiC。,,SiC,GaN,。,,FeGaN。2DEG,,AlGaNAl。AlGaNAl0.2~0.3,20~30nm,2DEG1013cm-2,1000~2000cm2/(V·s)。AlGaN/GaN,GaNHEMT,,。AlGaN/GaN1nmAlN,2DEG[2],,。AlGaN/GaNGaN,。GaN;GaN(GaN)AlGaN;n+GaN。AlGaNGaNAl0.82In0.18N(LM-AlInN),,。LM-AlInN/GaNHEMT,,AlInN2DEG。AlInN13nm,2DEG(2.6±0.3×1013)cm-2。AlInN/GaNAlNAlInN,2DEG,200cm2/(V·s)1170cm2/(V·s)。LM-AlInN/GaNHEMT。,AlGaN/GaNGaNInGaN,InGaNGaN,、、,。GaNAlAlGaN,。AlGaN/GaNAlAlGaN,GaNAlGaN,2DEG,,,,。3.2,GaNHEMT、。,。,。,。,。。SiN。,IDSmaxVbr,,DPoEPa,,。GaNHEMT(4~6),。64(MISHFET),HEMT。,。,MISHFET;Gmmax,,,MISHFET。GaNMISHFET,,。,。,。,,,。VBR,,,DPoEPa。,,,,;,,,,。4GaNHEMT4.1K,L~CHEMTDPo=12W/mm,Chini0.7×150μm2、、0.7μm2μm、0.7μm4GHz、VDS=50V,、。SiCHEMTDPomax=41.4W/mm[3],0.55×246μm2、3.5μm、(、)4GHz,VDS=135V。,,。Pomax=230W,SiC、、、1μm×48mm2GHz,VDS=53V,DPo=4.8W/mm[4]。2。21nm,Gmmax150mS/mm270mS/mm。。。XDPomax=11.2W/mm,0.3×100μm210GHz,VDS=45V;Pomax=38W,0.4μm×12mm10GHz,VDS=37V;KuPomax=34.7W,0.4μm×12mm14.25GHz,VDS=30V。XKu,C。L~CGaNHEMT,。,GaNHEMT(28V),。,GaNHEMT“,”。4.2KaKa,,0.15μm。,,、。20050.16×150μm240GHz,VDS=30VDPomax=10.5W/mm,20070.15×400μm2、0.25μm30GHz,VDS=60VDPomax=13.7W/mm[5]。,Al0.32Ga0.68N25nm,12nm,1400mA/mmIDsmax80V,SiN,。FeGaNInGaN,,VDS=60V。20050.15μm×1.5mm30GHz,VDS=28VPomax=8.05W。[5],InGaN。2006(HRL)WGaNMMIC[6],80.5GHz,0.1μm、150μm(4)Po=316mW,DPo=2.1W/mm。GaNHEMTAl0.3Ga0.7N/GaN/Al0.04Ga0.96N,,GaNAlGaN2230WGaN65PowerElectronicsVol.42No.12December,200842122008120.2Ω·mm,fT=90GHz,fmax=200GHz。GaNHEMT。2007n+GaN,,,,。0.14×150μm2,0.75μm,IdsmaxGmmax20%,fT10%;30GHz,VDS=42VDPo=10W/mm。2007fT=85GHz,fmax=210GHz、100V,,W。0.1μm、120μm,SiN/n-GaN(GaN/AlGaN)、,AlGaN(11.5nmAl0.3Ga0.7N),Y(T),。AlNGaN,,AlNAlN/GaNAlN。MBEAlN(2.5nm)/GaNCat-CVDSiNMISHFET,,2DEG2.33×1013cm-2,365cm2/(V·s),1000Ω/sq,。,Cat-CVDSiN,1.1×10-4Ω·cm2,3.3×10-7Ω·cm2。,60nm,fT=107GHz,fmax=160GHz(MSG),。AlN/GaNHEMT1×200μm2,DPomax=2GHz,VDS=15V850mW/mm。MOCVDAlN(5nm)/GaN,0.98×1013cm-2,900cm2/(V·s),569Ω/sq,1.14×10-4Ω·cm2。AlN(3.5nm)/GaNMISHFET,Al2O3,2DEG2.7×1013cm-2,1400cm2/(V·s),165Ω/sq。1S/mm,480mS/mm,,。4.3GaNHEMT“”GaNHEMT,。GaNHEMT,X。8GHz,VDS=40VDPo11.74W/mm,8mm8GHz,VDS=27VPo=33.8W;X14WGaNMMIC。,,X。20022MOCVD,200632MOCVD。MOCVD2DEGμns2×1016cm2/(V·s)AlGaN/GaN,SiCAlGaN/GaNSiCGaN,。2003AlGaN/GaN8GHz、4W/mmHEMT。GaN,GaNGaN,GaNHEMT,MISHFET。5GaN3,,。“,”,3,。[1]MAKhan,etal.HighElectronMobilityTransistorbasedonaGaN-AlGaNHeterojunction[J].AppliedPhysicsLetters,1993,63(9):1214-1215.[2],,,.AlNAlGaN/GaNHEMT[J].,2005,25(12):2396-2400.[3]WuYF.40-W/mmDoubleField-platedGaNHEMTs[C].in64thDeviceResearchConference,2006.[4]OkamotoY.ImprovedPowerPerformanceforaRecessed-gateAlGaN-GaNHeterojunctionFETwithaField-modu-latingPlate[J].IEEETrans.onMicrowaveTheoryandTech-niques,2004,52(11):2536-2540.[5]WuYF.High-voltageMillimeter-WaveGaNHEMTswith13.7W/mmPowerDensity[C].inInternationalElectronDe-vicesMeeting,2007.[6]MicovicM.GaNHFETforW-bandPowerApplications[C].inInternationalElectronDevicesMeeting,2006.66