Photovoltaic Switching Mechanism in Lateral Structure Hybrid Perovskite Solar Cells

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1、www.advenergymat.dewww.MaterialsViews.comCOMMUNICATIONPhotovoltaicSwitchingMechanisminLateralStructureHybridPerovskiteSolarCellsYongboYuan,JungseokChae,YuchuanShao,QiWang,ZhengguoXiao,AndreaCentrone,andJinsongHuang*Organometaltrihalideperovskite(OTP)materialshave

2、attractedhighervoltageisneededinmanyapplications,suchashouse-broadattentionduetotheiropticalandelectricalpropertiesthatholddevices(110V),batterychargers(12V),etc.However,thearepromisingforsolarcellapplications.[1]Inthepastfewyears,originoftheswitchingmechanismoft

3、hephotovoltaiceffectinthepowerconversionefficiencyofOTPsolarcellsdramaticallyOTPdevicesisunknown.improvedfrom3.8%toacertified20.1%.[2]Meanwhile,light-AswitchablephotovoltaiceffectinlateraldevicesmadeemittingdevicesandphotodetectorswithOTPsastheactivebyferroelectric

4、materialshasbeenobservedtobecausedbymaterialhavealsobeendemonstrated.[3]Incontrastwiththeshiftcurrentduetotheasymmetricmomentumdistribu-rocketingdeviceefficiency,theunderstandingofhowthefun-tionofphotogeneratedchargecarriers,[7]orinmaterialswithdamentalmaterialpro

5、pertiesofOTPsarerelatedtodeviceoper-domainboundaries.[8]Nevertheless,theswitchablephoto-ationisstilllimited.[1b,4]InanefforttounderstandtheoriginofvoltaiceffectobservedinOTPdevicescannotbeexplainedasphotocurrenthysteresis,commoninmanyOTPsolarcells,[5]abulkphotovo

6、ltaiceffectbecauseoftheindependenceVOCwerecentlydiscoveredanintriguingswitchablephotovoltaicwithrespecttotheelectrodespacingdistanceandbecauseofeffectinbothverticalandlateralstructuresdevices.[6]Bypolingtheswitchingcapabilityisreducedatlowtemperature.[6]Wethemeth

7、ylammoniumleadtri-iodide(MAPbI3)layersand-previouslyhypothesizedthattheelectromigrationofcationsorwichedbetweentwoelectrodesofthesamematerial,(eitheranionscouldinducepandndopinginproximityofthetwoeitherpoly(3,4-ethylenedioxythiophene)polystyrenesulfonate,electrod

8、es,thusformingaflippedp-i-nstructureafterpolinggold,nickel,platinum,orgraphite)weshowedthatthedirec-thedevicewithreversedbias,butdirectevidenceofionelec-tionoft