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1、SynthesisandPhotoluminescenceofSiOxNanotubesCHINESEJOURNALOFCHEMICALPHYSICSVOLUME19,NUMBER6DECEMBER27,2006ARTICLESynthesisandPhotoluminescenceofSiONanotubesHai—fengJiang,Yi—qingChen.,Qing—taoZhou.,YongSu.,Shu—yuanZhang,Hal—huaXiao.a.Depa~mentofMaterialScienceandEngineering,HefeiUniver
2、sityofTechnoloEy,Hefei230009,China;bHefeiNationalLaboratoryForPhysicalScienceattheMicroscale,UniversityOfScienceandTechnologyofChina,Hefei230025,China(Dated:ReceivedonDecember3O,2005;AcceptedonFebruary17.2006)AmorpheusSi0nanotubeswithhoInog0n0ousdiaineterswerefabricatedinlarge—scaleon
3、siliconsubstratebythermalevaporationmethod,withliquidgalliumasmedium.Theaveragediameteroftubesisabout80nmandthelengthisnlorethan10"n1withsmallratiobetweentheinnerandouterdiameterofthetube.Thesiliconelementinthesubstrateandtheresidualoxygenelementinreactionchamberwerefirstdissolvedinto
4、liquidGa.ThentheSiOprecipitatedfrolntheBurfaceofgalliumdroplet,formingtheilanotubestructurewithGadropletbeingthecenter.TheroomtemperatureDhotoluInino8conconleasurenlentsunderexcitationat260nmshowthattheSiOznanotubeshasastrongbhmemissionat453nmwithtwoshouldersat410and480nl[1respectivel
5、y,whichmayberelatedtooxygendefects.Thepreparationmethodimprovedtilet,raditionalcomplicatedmethodandalsoprovidedanewwaytofabricateSiO∞nanotubesinlargequantity.Keywords:Anmrphous,Nanotubes,PhotoluminescenceI.INTR0DUCT10NMuchattentionhasbeenpal(1tocarbonnanotubesfCNTs)inthefieldsofnanote
6、chnologyduetotheiruniquestructuresandelectronicpropertiesaswellaspotentialapplicationsinnanoelectronicsandopticde—vicessincethediscoveryofCNTsiii1991l11.Uptonow,quais—one—dimensionalstructureshavebeenachievedinawiderangeofmaterials,suchasSinanowiresl2lalllOrphousSi02nanotubesl3l,GaNna
7、nowires『4],ZnOnanowiresl5]andnanobeltsl6l,etc.Amongthem,asapromisingfluorescentmate—rial,amorphousSiOnanotubeshaveattractednmchattention.whichmightbeappliedextensivelyinbiom—etry,medicinechemistryandotherfields,andllavegreatpotentialvahleinnanodevicessuchasnano—interconnectionintegrat
8、edopt
