Efficient laser textured nanocrystalline silicon-polymer bilaye

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1、APPLIEDPHYSICSLETTERS90,203514
2007Efficientlasertexturednanocrystallinesilicon-polymerbilayersolarcellsa
A.A.D.T.Adikaari,D.M.N.M.Dissanayake,R.A.Hatton,andS.R.P.SilvaNanoElectronicsCentre,AdvancedTechnologyInstitute,UniversityofSurrey,Guildford,SurreyGU

2、27XH,UnitedKingdom
Received30March2007;accepted19April2007;publishedonline18May2007ExcimerlasertexturedthinÞlmsiliconandpoly
2-methoxy-5-
2
-ethyl-hexyloxy-1,4-phenylenevinylenebilayersolarcellsarefabricatedandcharacterizedwithairmass1.5simulatedsolarir

3、radiation.Thepolymerlayerincreasesthelightharvestingcapabilityofthecellandincreasestheshuntresistancewhileincreasingopencircuitvoltage.ThehighestefÞciencyof0.87%forthethinÞlmsilicon/polymerbilayerdeviceisobservedduetoenhancedchargecollectionresultingfromt

4、heinclusionofthepolymerlayer.Generationofchargecarriersisproposedtobeoccurringmainlyinthesiliconlayerandchargetransportisexplainedusinganenergybanddiagram.©2007AmericanInstituteofPhysics.DOI:10.1063/1.2739365Organicphotovoltaicshavebeenextensivelyinvest

5、i-
8mm2laserpulse.Thescanningwasperformedalongthegatedoverthepastfewyearsduetotheirpotentiallowcostlongaxis,keepingthesteeperedgeoftheasymmetricpulse1astheleadingedge.Thescanningspeedfortheexperimentnatureandenvisagedsimplicityinfabrication.Interestinwas2

6、mms−1withpulserepetitionratemaintainedat50Hz.organic/inorganicheterojunctionshasgrownsimultaneouslyAnenergydensityof160mJcm−2/pulsewasusedfornano-withmostoftheworkconcentratedontitaniabasedphotovoltaics.2Asmallnumberofreportspertainingtohy-structuring.The

7、laserenergywasmeasuredusingaMolec-drogenatedamorphoussilicon
a-Si:H/polymerheterojunc-tronEPM1000analyzerandaJ25LP-MUVpyroelectricde-tionsolarcellshavebeenreported.3,4However,activepar-tector.ticipationofthepolymerinphotocurrentgenerationhasbeenThelasern

8、anostructureddevicesubassemblywasthenconÞrmedonlyrecently.4TheefÞciencyofthesehybridde-dippedintoabufferedhydroßuoricacidfor20storemovetheoxidelayer.A10mgcm−3MEH-PPVinchloroformwasviceshasbeenlow,andfora-Si:H/polyme