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1、第25卷第2期无机材料学报Vo.l25,No.22010年2月JournalofInorganicMaterialsFeb.,2010ArticleID:1000324X(2010)02021605DOI:10.3724/SP.J.1077.2009.09563PreparationandCharacterizationofZnSeTetrapodswithSphaleriteNucleus1,22221LIUZhen,ZHUYingChun,YUANJianHui,RUANQiChao,MAGuoHong(1.DepartmentofPhysics,ShanghaiU
2、niversity,Shanghai200444,China;2.TheKeyLaboratoryofInorganicCoatingMaterials,ShanghaiInstituteofCeramics,ChineseAcademyofSciences,Shangha,i200050,China)Abstract:Manipulationofmaterialswithnanoscalecontrolisthekeyofnanoscienceandnanotechnology,becausetheintrinsicpropertiesofnanoscalematerialsarecl
3、oselydeterminedbytheirstructures.Inthiswork,atetrapodshapedZnSenanostructurewassynthesizedsuccessfullyviathermalevaporationandtheircrystallographicstructureswerecharacterizedbyhighresolutiontransmissionelectronmicroscope.ThemorphologyandconstructionofZnSenanostructurearediscussedindetai.lTheas
4、grownZnSetetrapodsincludeonezincblendenucleusandfourarmswithuniformwurtzitestructuregrowingalongthe[001]direction.AndthecoexistenceoftwocrystalstructuresindifferentdomainsofoneZnSenanocrystalisexperimentallydemonstrated.Accordingtothecrystalphasestabilityindifferenttemperatureregionsandcrystall
5、ographicpropertyofZnSe,anacceptablegrowthmodelisemployedtoexplaintheformationprocessofthisnewlydiscoveredZnSetetrapodsnanocrysta.lKeywords:thermalevaporationmethod;ZnSetetrapods;crysta;lnanoscience;nanotechnologyComplexsemiconductornanocrystalshavedrawnwurtzitedomainsconnectedtooneanotherviatwi
6、n[6]muchattention,sincefurtherapplicationsandnewfuncboundariesusingSnascatalyst.Inthiswork,itistionalmaterialsmightemergeifnanocrystalscanbesyndemonstratedthatthetetrapodsareformedfromsphalerthesizedwithcomplexshapesandwelldefinedthreediitetetrahedralnucle,iontowhichwurtzitearmsarede[12]men
7、sional(3D)architectures.Thefabricationofvelopedviasubsequentdeposition.familytetrapodnanocrystalswasattemptedwithdifferenttechniquessinceAlivisatosandcoworkerssuc1ExperimentceededinthesynthesisoftetrapodshapedCdSe
