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时间:2019-11-25
《4HSiC的强氧化液化学机械抛光 英文 梁庆瑞》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第44卷第7期人工晶体学报Vol.44No.72015年7月JOURNALOFSYNTHETICCRYSTALSJuly,2015ChemicalMechanicalPolishingof4H-SiCwithStrongOxidizingSlurry1,211122LIANGQing-rui,HUXiao-bo,CHENXiu-fang,XUXian-gang,ZONGYan-min,WANGXi-jie(1.StateKeyLaboratoryofCrystalMaterials,ShandongUniversity,Jinan250100,China;2.SICC
2、MaterialsCo.,Ltd,Jinan250111,China)(Received10February2015,accepted15March2015)Abstract:Anovelchemicalmechanicalplanarization(CMP)techniquewasdemonstratedusinghybridpolishingliquidwhichwascomposedofstrongoxidizerabrasiveslurry(SOAS)withKMnO4.Afterdoublefacepolishingwithdifferentmassconc
3、entrationsofKMnO4,4H-SiCsubstrateswereassessed.Surfaceroughnessandwaferremovalrateweremeasuredbyatomicforcemicroscopy(AFM)andprecisionscale,respectively.TheresultsshowthattheSOASwithappropriateKMnO4concentrationcangreatlyraisethematerialremovalrate(MRR)andimprovethesurfacequalityof4H-Si
4、Csubstrate.Keywords:SiC;CMP;KMnO4;roughness;removerateCLCnumber:TN305.2Documentcode:AArticleID:1000-985X(2015)07-1741-07DOI:10.16553/j.cnki.issn1000-985x.2015.07.0054H-SiC的强氧化液化学机械抛光1,211122梁庆瑞,胡小波,陈秀芳,徐现刚,宗艳民,王希杰(1.山东大学晶体材料国家重点实验室,济南250100;2.山东天岳晶体材料有限公司,济南250111)摘要:研究了一种新型的化学机械抛光方法,使用
5、以KMnO4作为氧化剂的强氧化性化学机械抛光液(SOAS)进行化学机械抛光。研究了在4H-SiC硅面和碳面的化学机械抛光过程中,SOAS溶液中KMnO4的浓度对抛光质量的影响。使用原子力显微镜(AFM)和精密电子天平,分别测试了表面粗糙度和去除率。结果表明,适量的KMnO4可以大幅度提高4H-SiC的化学机械抛光去除率,同时可提高4H-SiC衬底的表面抛光质量。关键词:碳化硅;化学机械抛光;高锰酸钾;粗糙度;去除率1IntroductionSiCbelongstothethirdgenerationsemiconductormaterial,whichhasawide
6、rangeofapplicationsinthefieldsofoptoelectronicandhighpowersemiconductordevicesbecauseofitsoutstandingcharacteristics,suchasexcellent[1-4]mechanicalproperties,verywidebandgap,highthermalconductivity,highcarriermobility,etc.CommercialSiCsubstraterequiresadefect-freesurface.ForSiCsinglecry
7、stalsubstrate,therearetwomainkindsofdefects.Oneisgrown-indefectssuchasmicropipes,dislocations.Theotherispost-growthdefectscausedbyposttreatment,forinstance,scratches,pitsandbumps.CMPisakindofglobalplanarizationpolishingprocess[5,6]especiallyforthepolishingofhardandbrittlemateri
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