基于纳米ZnO压电纳米发电机ppt课件.ppt

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1、Members:刘才刘秉龙李龙龙胜董伟16PiezoelectricNanogeneratorsBasedonZincOxideNanowireArraysContentsIntroduction1234OutlookBasicPrinciplePreparationSICCASIntroductionConvertnanoscalemechanicalenergyintoelectricalenergybymeansofpiezoelectriczincoxidenanowire(NW)arrays.Nanoge

2、neratorWang,Z.L.andJ.H.Song(2006)."Piezoelectricnanogeneratorsbasedonzincoxidenanowirearrays."Science312(5771):242-246SICCASIntroductionTheefficiencyoftheNW-basedpiezoelectricpowergeneratorisestimatedtobe17to30%.Thisapproachhasthepotentialofconvertingmechanica

3、l,vibrational,and/orhydraulicenergyintoelectricityforpoweringnanodevices.ResearchSignificanceAchievementsYang,R.,Y.Qin,etal.(2009)."ConvertingBiomechanicalEnergyintoElectricitybyaMuscle-Movement-DrivenNanogenerator."NanoLetters9(3):1201-1205.SICCASIntroduction

4、ZnOPiezoelectricSemiconductingBiosafeBiocompatibleBiomedicalapplicationswithlittletoxicityMostdiverseandabundantconfigurationsofnanostructuresSICCASOperationalPrincipleWang,Z.L.andJ.H.Song(2006)."Piezoelectricnanogeneratorsbasedonzincoxidenanowirearrays."Scien

5、ce312(5771):242-246ExperimentalsetupPotentialdistributionSICCASOperationalPrincipleReverse-andforward-biasedSchottkyrectifyingbehaviorSICCASOperationalPrincipleApplicationPrincipleSICCASPreparationPreparationVapor-Liquid-Solid(VLS)Process12SolutionGrowthMethod

6、SICCASPreparationAuAl0.5Ga0.5NAlNc-plane-orientedsapphireStep1:FabricationofsubstrateWangX.D.,SongJ.H.,etal(2005)."GrowthofUniformlyAlignedZnONanowireHeterojunctionArraysonGaN,AlN,andAl0.5Ga0.5NSubstrates",JournalofAmericanChemicalSociety,127:7920-79231.Vapor-

7、Liquid-Solid(VLS)ProcessSICCASPreparationStep2:GrowthofZnONWsFurnaceArViewwindowZnO+Graphite(950℃）Substrate（880℃）TopumpThermalcoupleAluminatubeAr+O2O2SICCASStep2:GrowthofZnONWsPreparationsubstrateAuZnOZn+O2SICCASAdvantagePreparation1.Simple,Matureandwidelyused

8、.2.FitforpreparingNWswithgooddispersion.SICCASPreparation2.SolutionGrowthMethodTwomaterials:ZnOseedsandaCrlayerStep1:fabricateaZnOstrippatterncoveredwithCratthetop.(100)Siwaferclea