学科分类
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6 个结果
  • 简介:一系列新奇低乐队差距施主领受人(D-A)类型在主要的链(M1)并且在由电子缺乏的领受人块组成的器官的共聚物(BT-F-TPA,BT-CZ-TPA和BT-SI-TPA)悬挂(M2)是与不同电子富人一起的polymerized施主(M3M5)块,即,9,9-dihexyl-9H-fluorene,N-alkyl-2,7-carbazole,和2,6-dithinosilole,分别地经由铃木方法。这些聚合物展出了相对低的乐队差距(1.651.88eV)和宽广吸收范围(680740nm)。作为电子施主合并这些聚合物的体积异质接面(BHJ)太阳能电池,相配与[6,6]-phenyl-C61-butyric酸甲基酉旨(PC61BM)或[6,6]-phenyl-C71-butyric酸甲基酉旨(PC71BM)作为在不同重量的电子领受人,比率下面被制作并且测试与白光的照明的AM1.5的100mW/cm2。包含施主BT-SI-TPA和领受人PC71在1:2重量比率的BM显示出1.88%的最好的力量变换效率(PCE)值,与开的电路电压(Voc)=0.75V,短路电流密度(Jsc)=7.60妈/厘米2,并且充满因素(FF)=33.0%。

  • 标签: 侧链聚合物 光伏器件 结构调整 带隙 分子间 应用
  • 简介:Nitrogen-dopedthree-dimensional(3D)porouscarbonmaterialshavenumerousapplicationsduetotheirhighlyporousstructures,abundantstructuralnitrogenheteroatomdecorationandlowdensities.Herein,nitrogendopedhierarchical3Dporouscarbons(NHPC)werepreparedviaanovelmetal–organicaerogel(MOA),usinghexamethylenetetramine(HMT),1,3,5-benzenetricarboxylicacidandcopper(II)asstartingmaterials.Themorphology,porousstructureofthebuildingblocksintheNHPCcanbetunedreadilyusingdifferentamountofHMT,whichmakeselongationofthepristineoctahedronofHKUST-1togiverisetodifferentaspectratiorod-likestructures.Theas-preparedNHPCwithrod-likecarbonsexhibithighperformanceinlithiumsulfurbatteryduetotherationaliontransferpathways,highN-dopeddopingandhierarchicalporousstructures.Asaresult,theinitialspecificcapacityof1341mAh/gatrateof0.5C(1C=1675mAh/g)andhigh-ratecapabilityof354mAh/gat5Cwasachieved.Thedecayover500cyclesis0.08%percycleat1C,highlightingthelong-cycleLi–Sbatteries.

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  • 简介:HierarchicalporousTiO2nanopillsweresynthesizedusingatitaniummetal-organicframeworkMIL-125(Ti)asprecursor.Theas-synthesizedTiO2nanopillsownedalargespecificsurfaceareaof102m2/ganduniqueporousstructure.Furthermore,theobtainedTiO2nanopillswereappliedasanodematerialsforNa-ionbatteriesforthefirsttime.Theas-synthesizedTiO2nanopillsachievedahighdischargecapacityof196.4mAh/gatacurrentdensityof0.1A/g.Adischargecapacityof115.9mAh/gwasobtainedatahighcurrentdensityof0.5A/gandthecapacityretentionwasremainedashighas90%evenafter3000cycles.Theexcellentelectrochemicalperformancecanbeattributedtoitsuniquehierarchicalporousfeature.

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  • 简介:Temperature-dependentphotoluminescencecharacteristicsoforganic-inorganichalideperovskiteCH3NH3PbI3-xClxfilmspreparedusingatwo-stepmethodonZnO/FTOsubstrateswereinvestigated.Surfacemorphologyandabsorptioncharacteristicsofthefilmswerealsostudied.Scanningelectronmicroscopyrevealedlargecrystalsandsubstratecoverage.Theorthorhombic-to-tetragonalphasetransitiontemperaturewas140K.Thefilms’excitonbindingenergywas77.6±10.9meVandtheenergyofopticalphononswas38.8±2.5meV.TheseresultssuggestthatperovskiteCH3NH3PbI3-xClxfilmshaveexcellentoptoelectroniccharacteristicswhichfurthersuggeststheirpotentialusageinperovskitebasedoptoelectronicdevices.

  • 标签: 金属卤化物 有机-无机 光致发光 钙钛矿 氧化锌 两步法