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1、構(gòu)筑扭曲苝酰亞胺單分子型電荷受體材料用于高性能有機太陽能電池SCIENCECHINAMaterialsmater.scichina.com??link.springer.comARTICLESPublishedonline23June?2016?
2、?doi:?10.1007/s40843-016-5063-3SciChinaMater??2016,59(6):427–434SPECIALISSUE:FlexibleandStretchableEnergyAtwistedmonomericperylenediimideelectronacceptorforeff
3、icientorganicsolarcellsYunhaoCai1,XieyouGuo1,XiaoboSun1*,DonghuiWei2,MingmingYu2,LijunHuo1*andYanmingSun1*—————————————————————————————————————————————————————ABSTRACT??Perylenediimide(PDI)-basedmaterialsexhibitgreatpotentialasnon-fullereneacceptorsinbulk-heterojunc-tion(BHJ)organic
4、solarcells(OSCs).RecentinvestigationshaverevealedthatPDImoleculeswithatwistedstructurecoulddisruptaggregationofperyleneunit.Here,wepresentaPDImonomerviabay-substitutionswithfourfusednaph-thaleneunitsbythree-stepreactions,namedTN-PDI.Thein-troductionoffourfusednaphthaleneringsintothe
5、bayposi-tionsofPDIunitleadstoastrongsterichindrancewithatwistangleof33°betweenthetwoPDIsubplanes.Blendedwithawide-bandgappolymerdonor(PDBT-T1),theTN-PDIbasednon-fullerenesolarcellsshowpowerconversionefficiency(PCE)of3.0%.Ourresultsindicatethatthebay-substitu-tionswithfusedaromaticsu
6、bstitutionscouldbeanefficientapproachtodevelopmonomericPDIacceptors.Keywords:??organicsolarcells,non-fullereneelectronacceptors,perylenediimide,monomerINTRODUCTIONSolution-processedbulk-heterojunction(BHJ)organicso-larcells(OSCs)haveemergedasoneofthenext-genera-tionenergyresourcesto
7、meettheworldwideurgenten-ergydemandinvirtueoftheirmeritsinlightweight,lowfabricationcostandthecapabilitytobuildontheplasticsandprintingmanufactures[1–7].Amongvariousmateri-alsusedforacceptors,fullerenederivativesactasthepro-tagonistsofelectronacceptors,whichleadthepowercon-versionef
8、ficiencies(PCEs)to11%forsinglejunctionOSCs[8–12].Despitetheachievementsoffullerenederivativesinlaboratoryscaledevices,thehigh-costproduction,inflexi-bilityinchemicalmodification,andweaklightabsorptioninthevisibleregionoffullereneshampertheirpracticalap-plications[13–16].Tothisend,de
9、signandsynthesisofo
