有机太阳能电池光电材料研究进展.pdf

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1、Perspectivepubs.acs.org/MacromoleculesRationalDesignofHighPerformanceConjugatedPolymersforOrganicSolarCells†‡,†,‡HuaxingZhou,LiqiangYang,andWeiYou*†DepartmentofChemistry,UniversityofNorthCarolinaatChapelHill,ChapelHill,NorthCarolina27599-3290,UnitedStates‡Curriculum

2、inAppliedSciencesandEngineering,UniversityofNorthCarolinaatChapelHill,ChapelHill,NorthCarolina27599-3287,UnitedStatesABSTRACT:Theresearchonthepolymer-basedsolarcells(PSCs)hasattractedanincreasingamountofattentioninrecentyearsbecausePSCsposepotentialadvantagesovermai

3、nstreaminorganic-basedsolarcells,suchassignificantlyreducedmaterial/fabricationcosts,flexiblesubstrates,andlightweightoffinishedsolarcells.Theresearchcommunityhasmadegreatprogressinthefieldofbulkheterojunction(BHJ)polymersolarcellssinceitsinceptionin1995.Thepowercon

4、versionefficiency(PCE),akeyparametertoassesstheperformanceofsolarcells,hasincreasedfrom1%inthe1990stoover8%justrecently.Thesegreatadvancesaremainlyfueledbythedevelopmentofconjugatedpolymersusedastheelectron-donatingmaterialsinBHJsolarcells.InthisPerspective,wefirstb

5、rieflyreviewtheprogressonthedesignofconjugatedpolymersforpolymersolarcellsinthepast16years.Sinceaconjugatedpolymercanbearbitrarilydividedintothreeconstitutingcomponentstheconjugatedbackbone,thesidechains,andthesubstituentswethenfocusontherationaldesignofconjugated

6、polymersbyseparatelydiscussingtheinfluenceofeachcomponentonthephysicalandphotovoltaic(PV)propertiesofthesepolymers.Specialattentionispaidtothedesignofdonor−acceptortypelow-band-gappolymersbecausethisapproachisprevailingintheliteraturewithitsuniquefeatures.Indoingso,

7、westrivetoextractusefulrulesfortherationaldesignofconjugatedpolymerswithpredictableproperties.WeconcludebyproposingfutureresearchopportunitiestoachieveevenhigherPCEsforPSCs.1.INTRODUCTION1.1.Background.Polymersolarcells(PSC)haveattractedanincreasingamountofattention

8、intheresearchcommunityduetothepotentialadvantagesofPSCoverinorganic-basedsolarcells,includinglowcost,lightweight,andfast/cheaproll-1−7to-r