氧化锌纳米棒阵列生长

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1、AlignedZnONanorodArraysGrownDirectlyonZincFoilsandZincSpheresbyaLow-TemperatureOxidizationMethod用低温氧化方法直接在锌箔和锌颗粒培养排列有序的氧化锌纳米棒阵列ABSTRACTVerticallyaligned,denseZnOnanorodarraysweregrowndirectlyonzincfoilsbyacatalyst-free,low-temperature(450_500°C)oxidizationmethod.Thez

2、incfoilsremainconductiveevenafterthegrowthofZnOnanorodsonitssurface.Thesuccessofthissynthesislargelyreliesonthelevelofcontroloveroxygenintroduction.Byreplacingzincfoilswithzincmicrospheres,uniqueandsophisticatedurchin-likeZnOnanorodassembliescanbereadilyobtained.摘要垂直

3、有序密排的氧化锌纳米棒阵列直接通过无催化剂，低温（450~500°C）氧化法在锌箔上生长。在氧化锌纳米棒生长在它表面上后，锌箔仍然具有导电性。合成能够成功在很大程度上依赖于对引导氧气控制程度。通过将锌箔更换成锌微球，独特和复杂的海胆样氧化锌纳米棒组件很容易获得。Zincoxide(ZnO)isrecognizedasoneofthemostimportantphotonicmaterialsforapplicationsintheblue_ultravioletregionowingtoitsdirectwidebandgap(

4、_3.37eV)andlargeexcitationbindingenergy(60meVatroomtemperature).Stimulatedbytherecentdiscoveryofbeltlikemorphologyandtherealizationofroom-temperatureUVlasingfromZnOnanowires,ZnOnanostructuresintheformofnanorods,nanowires,andnanobeltshaveattractedagreatdealofattention

5、fromtheresearchcommunity.Especially,substantialefforthasbeendevotedtothefabricationofverticallyalignedZnOnanowirearraysbecausethesearraysdemonstratedsuperioropticalandfieldemissionpropertiesthatmakethempromisingcandidatesforapplicationsinUVlasers,light-emittingdiodes

6、(LED),solarcells,andfieldemissiondisplays.TofabricateverticallyalignedZnOnanorodarrays,threemaintechniqueswereusuallyusedsofar.Thefirsttechniqueisbasedonthewell-knownvapor_liquid_solid(VLS)growthmechanism,10inwhichgoldnanoparticleswereusedasthecatalysttodirectthenano

7、wiregrowth,a-planesapphirewhichhasperfectlatticematchupwithZnOcplanewasusedasthegrowthsubstrates,andthegrowthwasconductedatrelativelyhightemperaturesof由于其直宽禁带和大的激励结合能，氧化锌是公认的应用于蓝紫外地区最重要的光子材料之一,由于带状形态发现的促进和室温紫外激光发射的实现，氧化锌纳米线，以纳米棒，纳米线，和纳米带形式存在的纳米氧化锌吸引了研究机构大量的注意力。尤其是，大量

8、努力已投入垂直有序排列的氧化锌纳米线阵列的制备中，因为这些阵列显示优越的光学和场发射性能，使他们有望应用于紫外激光器，发光二极管（发光二极管），太阳能电池，和led。为了制造垂直有序排列氧化锌纳米棒阵列，至今为止三个主要的技术通常被使用。第一种技术是在著名的气液