简介:ZnOnanowiresdepositedonSisubstrateswerepreparedbythermalevaporationofamixtureofZnOandcarbonpowder.Agionswithanenergyof63keVandadoseof5×1015ions/cm-2wereimplantedintotheas-preparedZnOnanowires.Afterionimplantation,theAg-implantedZnOnanowireswereannealedinairatdifferenttemperaturesfrom600℃to1000℃.Effectsofionimplantationandthermalannealingonthestructuralandphotoluminescent(PL)propertiesoftheZnOnanowireswereinvestigatedbytransmissionelectronmicroscopy(TEM),selectedareaenergydispersiveX-rayspectroscopy(SAEDX),X-raydiffraction(XRD),andfluorescencespectrophotometry.TEM,HR-TEM,andSAEDXanalysesdemonstratedthatefficientdopingofAgwasachievedbyionimplantationandthesubsequentannealingprocess.XRDpatternsrevealedthatthehexagonalwurtzitestructureofZnOnanowireswasmaintainedafterionimplantation.PhotoluminescentemissionsofZnOnanowiresweredecreasedsignificantlybyAgimplantationbutcouldberecoveredbythermalannealing.ThemechanismoftheinfluenceofionimplantationandannealingonthePLintensitywasassessed.
简介:Thispaperpresentstheresultsofaluminumsurfacetreatmentbydiffusecoplanarsurfacebarrierdischarge.Thegoalsaretostudytheeffectivenessoftheplasmatreatmentandthedependenceofitsefficiencyonoperationparameters,suchassample-to-electrodedistance,treatmenttimeorgasatmosphere.Threetypesofaluminummaterials(bricks,sheetsandthinfilms)weretestedtoensurethereliabilityofthetreatment.Thechangesinthesurfacepropertieswerecharacterizedbythesurfacefreeenergy,atomicforcemicroscopy,attenuatedtotalreflectanceFouriertransforminfraredspectroscopy(ATRFTIR)andX-rayphotoelectronspec-troscopy(XPS).Theinfluenceofagingeffectonthetreatmentwasalsomeasuredanddiscussed.