Abstract
Abstract
Asallinexhaustiblegreenenergy,thesolarenergyisoneoftheoptimalwaytoresolveenergycrisis.Inrecentlyyears,theheterojunctionscomposedbysemconductor—-semconductoranddye- semconductorwerewidelyusedtoincreasetheconversionefficiencyofthesolarenergyandthedevelopmentofthephotoelectricdevicesbecause
toseparateinthesestructures.ZnOisthephoto—inducedchargeareeasyanimportant
excUentphotoelectricmaterialwitllllightranmissioninthevisibleregion.ZnOisan
materialtopreparephotoelectricdevicesduetoits
USadvantages,suchaslowcost,lowtoxicityandrichresource.So,itisworthfortoresearch.Inthispaper,wefabricated
heterojunctionsbasedonZnOwitIlp-typeNiOandorganicdyeN719andinvestigatedtheredistributionprocessofthephotogeneratedchargebysurfacephotovoltagespectroscopy,whichisusefulfortheapplicationoftheminphotoelectricconversion.Thesignificant
1.ZnOresultsarelistedasfollows:NiOceramictargetsweremade、历thZnO、NiOpowderwimtheand
purityof99.99%,de-ionizedwaterof18.2MQandPVAasprimarymaterial.First,thePvAandthede-ionizedwaterweremixedatthemassratioofl:200.andthenheatedinwaterbathatabout90oCwithmagenicstirringtomakePVAagglomerant.Second,theZnOorNiOpowderwereputinagatemorearandaddsomeagglomeranttothepowder,thenwhetthemexiguousanduniform.Third,thepowderismoveintothediearrangment
theandpresstomoulding,andthenthePVAwereremovedbyheating.Last,targetswereputinthechamberfurnaceand
onsinteredtotheceramictargets.2.ZnOandNiOfilmsweredepositdSisubstratesandquartzsubstratesbylaser
molecularbeamepitaxytechnique.ThesampleswerecharacterizedbyX—raydiffraction,Ranlan,photoluminescenceand
ZnOthetransmissionspectrum.Theand
andresultsindicatethattheandNiOfilmspreparedhavegoodcrystallinityhavehightransmissioninthevisibleregion,whichisusefulforthefabrication
onapplicationofthedevicesbasedZnOandNi0.
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