预览加载中,请您耐心等待几秒...
1/2
2/2

在线预览结束,喜欢就下载吧,查找使用更方便

如果您无法下载资料,请参考说明:

1、部分资料下载需要金币,请确保您的账户上有足够的金币

2、已购买过的文档,再次下载不重复扣费

3、资料包下载后请先用软件解压,在使用对应软件打开

CuCMP抛光液对速率的影响分析及优化 Abstract: CMP(ChemicalMechanicalPolishing)isakeyprocessinsemiconductormanufacturing.ThepolishingrateoftheCMPslurryhasasignificantimpactontheyieldandthroughputoftheproductionline.Inthispaper,thefactorsaffectingthepolishingrateoftheCMPslurryareanalyzed,andsomeoptimizationstrategiesareproposedtoimprovethepolishingrate. Introduction: CMPisaprocessthatcombineschemicalreactionsandmechanicalpolishingtoflattenandplanarizethesurfaceofasubstrate.TheCMPslurryisacriticalfactorintheCMPprocess.Itiscomposedofabrasiveparticles,oxidizers,andotherchemicaladditives,anditplaysakeyroleinthepolishingrateandpolishingselectivity. ThepolishingratereferstotheamountofmaterialremovedperunittimeduringtheCMPprocess.Thepolishingratehasasignificantimpactontheyieldandthroughputofthesemiconductormanufacturingprocess.Therefore,itisessentialtoanalyzethefactorsaffectingthepolishingrateandproposesomeoptimizationstrategiestoimprovethepolishingrate. FactorsAffectingCMPPolishingRate: 1.AbrasiveParticleSize:ThesizedistributionoftheabrasiveparticlesintheCMPslurryhasasignificantimpactonthepolishingrate.Largerabrasiveparticlesremovematerialfasterthansmallerparticles.However,largerparticlescancausemorescratchesandincreasethesurfaceroughness.Therefore,theselectionofabrasiveparticlesisatradeoffbetweenthepolishingrateandsurfacequality. 2.Oxidizers:Oxidizers,suchashydrogenperoxide,areaddedtotheCMPslurrytooxidizethesurfaceofthesubstrateandenhancethepolishingrate.Theconcentrationoftheoxidizerhasasignificantimpactonthepolishingrate.Higherconcentrationsofoxidizerscanenhancethepolishingrate,buttheycanalsocausedefectsonthesurfaceofthesubstrate. 3.pH:ThepHoftheCMPslurryaffectsthechemicalreactionsthatoccurduringtheCMPprocess.ThepHcanaffectthestabilityoftheabrasiveparticlesandtheoxidizers,anditcanalsoaffectthesurfacechargeofthesubstrate.TheoptimalpHfortheCMPprocesscanvarydependingonthesubstratematerialandtheCMPslurrycomposition. 4.Temperature:ThetemperatureoftheCMPslurrycanaffectthechemicalreactionsandth