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1981年GaAs及其有关化合物国际讨论会 Introduction TheInternationalSymposiumonGaAsandRelatedCompoundsheldin1981wasasignificanteventthatbroughttogetherscientists,researchers,andengineersfromdifferentpartsoftheworldtodiscusstherecentadvancementsandcurrentchallengesrelatedtothecompoundsemiconductor,GalliumArsenide(GaAs).Thesymposiumprovidedaplatformforexpertstosharetheirknowledge,exchangeideas,andformcollaborations,whichenabledthemtooptimizetheperformanceofGaAstechnologyanddevelopnewapplications. HistoryofGaAsTechnologyDevelopment ThefirstdiscoveryofGaAsdatesbackto1940whenitwasidentifiedasapotentialsemiconductormaterialwithhighelectronmobilitycomparedtogermanium,whichwasthedominantsemiconductormaterialatthetime.Thisledtoextensiveresearchanddevelopment,andbythe1970s,GaAswasestablishedasapromisingalternativetosilicon-baseddeviceswithseveraladvantages,includinghighfrequencyofoperation,lownoise,andhighpowercapacity. AdvancementsDiscussedatthe1981InternationalSymposium The1981symposiumprovidedanopportunitytopresentanddiscusstherecentadvancementsmadeinGaAsresearchanddevelopment.OnemajorfocuswasontheepitaxialgrowthofGaAsfilms,whichhadbeenidentifiedasacriticalaspectinachievinghigh-performancedevices.Researchersdiscussedthetechniquesused,includingmolecularbeamepitaxy(MBE),chemicalvapordeposition(CVD),andmetal-organicchemicalvapordeposition(MOCVD). Anothersignificantadvancementdiscussedwasthedevelopmentofhigh-speedGaAsdevices.Thesedeviceswerefoundtohavebetterperformancethantheirsiliconcounterparts,suchashigherswitchingspeeds,lowernoiselevels,andenhancedreliability.Expertspresentedresearchonthedifferenttypesofhigh-speedGaAsdevicesavailable,includingfield-effecttransistors(FETs),heterojunctionbipolartransistors(HBTs),anddigitalintegratedcircuits(ICs). ThesymposiumalsohighlightedthechallengesandlimitationsencounteredinGaAstechnologydevelopment.OnekeychallengewasthedifficultyinachievinguniformdopinglevelsinGaAsfilms,whichaffectedtheperformanceofdevices.AnotherlimitationwasthehighcostofGaAscomparedt