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New Highly Efficient Performance Dyes for Dye-sensitized Solar Cells  
New Highly Efficient Performance Dyes for Dye-sensitized Solar Cells
资料类型: PDF文件
关键词: dye-sensitized  solar  cells  quinacridone  diketopyrrolopyrrole  isoindigo  
资料大小: 485K
所属学科: 功能高分子
来源: 来源网络
简介:
Thesensitizerisacrucialelementindye-sensitizedsolarcells(DSSCs).exertingsignificantinfluenceonthepowerconversionefficiencyaswellasthestabilityofthecells.Generally,organicdyesusedforefficientsolarcellsarerequiredtopossesshighchargecarriermobilityandbroadandintensespectralabsorptioninthevisiblelightregions.Diketopyrrolopyrrole(DPP),quinacridone(QAD),andisoindigo(IID)arewell-knownorganicpigmentswithexceptionallight,weatherandheatstabilityandare,therefore,usedinindustrialapplicationsashighperformancepigmentsinpaints,plastics,andinks.Inthiswork,threeseriesmetal-freedyes(Schemel)withaDPP,QAD,andIIDcoreweredesignedandsynthesizedforDSSCs.Theirabsorptionproperties,electrochemicalandphotosensitizationpropertieswereinvestigatedsystematically.ThepreliminaryresultsshowthattheDSSCsbasedonthedyeQADshowedthebetterphotovoltaicperformance:ashort-circuitphotocurrentdensity(J,,,)of13.25mA/cm2.anopen-circuitphotovoltage(Vo.)of804mV,andafillfactor(FF)of0.73.correspondingtoanoverallconversionefficiencyof7.7%understandardglobalAM1.5solarconditions.
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