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时间:2020-03-26
《ZnO纳米线阵列的电沉积法制备及表征.pdf》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、物理化学学~(WuliHuaxueXuebao)DecemberActaP.一Chim.Sin.,2010,26(12):3369—33723369[Article]www.whxb.pku.edu.cnZnO纳米线阵列的电沉积法制备及表征王丹丽阮永丰张灵翠杨红波(天津大学理学阮天津300072)摘要:利用直流电沉积方法在多孔氧化铝模板的孔洞中生成锌纳米线,在氧气氛围中,于800。C下氧化2h,将氧化铝中的锌氧化成氧化锌.本研究利用氧气氛围进行锌的氧化,大大提高了传统方法的氧化锌纳米线的制备效率.用场发射扫描电子显微镜(FE.SEM)、透射电子显微镜(TEM)和X射线衍射仪(XR
2、D)对其形貌及成分进行表征和分析,结果表明,氧化铝模板的有序孔洞中填充了大尺寸、均匀连续的多晶态氧化锌纳米线.纳米线具有约1000:1的高纵横比,其长度等于氧化铝模板的厚度,直径约为80nm.光致发光(PL)光谱表明,氧化锌纳米线在504nm处有由于氧空位引起的较强蓝绿光发射.这为进一步研究ZnO/AAO组装体发学性质和开发新型功能器件提供了基础.关键词:阳极氧化铝:氧化锌;纳米线阵列;电沉积:氧化中图分类号:0646;078;O61PreparationbyElectrodepositionandCharacterizationofZnONanowireArraysWANGDa
3、n—LiRUANYong—FengZHANGLing—CuiYANGHong·Bo(SchoolofScience,TianjinUniversity,Tianjin300072,R.China)Abstract.0rderedzinc(Zn)nanowirearraysembeddedjnanodicaIuminumoxide(AA0)templateswerepreparedbyanefectiveelectrodepositionmethod.OxygenwasusedtooxidizetheelectrodepositedzincnanowirearraysintheAA
4、Otemplates.Bythermaltreatmentinanoxygenatmosphereat800。Cfor2h,thedepositedZnwascompletelyoxidized.ThemicrostructuresandopticaIpropertiesofthesynthesizedzincoxide(ZnO)nanowirearrayswereinvestigatedbyfieldemissionscanningelectronmicroscopy(FE—SEM),transmissionelectronmicroscopy(TEM),X.raydiffra
5、ction(XRD),andphotoluminescence(PL)spectrumanalyticapparatus.WefoundthatIargescalepolycrystallineZnOnanowirearrayswereuniformIvassembledinfhenanochannelsoftheAAOtemplate.Thenanowireshaveaveryhighaspecfratioofabout1000:1withthelengthequalinglhetemplatethicknessandadiameterofabout80nm.PLmeasure
6、mentsoftheZnO/AAOassemblyshowedastronggreenemissionat504nm.whichwasattributedtOtheoxygenvacancydefectsoftheZnOnanowires.TheseresultscanbeusedinfurtherstudiesofthestructuralandfunctionalpropertiesofelectroluminescencedevicesbasedontheZnO/AAOassembly.KeyWords:Anodicaluminumoxide;Zincoxide;Nanow
7、irearray;EIectr0depOs⋯On:OxidizationThemultifunctionalmaterialZnOhasbeenusedtomakeva.becauseofitslargedirectbandgap,s~ongexcitonbindingenergyristors,gassensors,solarcells,andotherdevicessince1950s.Itandimportantapplicationprospectsinoptoelect
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