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简述超支化共轭聚合物光电活性材料研究进展,设计、合成了多种具有3-D立体结构的超支化共轭聚合物,研究了它们的结构与性能的关系及其在器件上的应用.实验结果表明,这种聚合物具有良好的溶解性,可成膜性和高的发光效率.可应用于发光二极管(LED),发光电化学池(LEC),光伏打电池等器件.这类化合物不仅可以作为发光材料,还可以通过修饰得到具有分子或离子识别、信息存储性能的特殊功能材料. 相似文献
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共轭聚合物发光和光伏材料研究进展 总被引:5,自引:1,他引:4
聚合物光电功能材料与器件因其广阔的应用前景,1990年以年来吸引了世界各国学术界的广泛关注和兴趣.聚合物光电子器件主要包括聚合物电致发光二极管、聚合物场效应晶体管和聚合物太阳能电池等,其使用的关键材料是共轭聚合物光电子材料,包括共轭聚合物发光材料、场效应晶体管材料和光伏材料等.本文主要对共轭聚合物电致发光材料和光伏材料的研究进展进行综述,介绍了这些聚合物材料的种类、结构和性质以及在聚合物电致发光器件和聚合物太阳能电池中的应用.并讨论了当前共轭聚合物光电子材料中的关键科学问题和今后的发展方向. 相似文献
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有机光伏材料与器件研究的新进展 总被引:4,自引:0,他引:4
近几年有机光伏电池应用研究发展迅猛。本文综述了有机光伏薄膜电池在材料(包括有机小分子材料与聚合物材料)、器件构造方面的最新进展,分析了有机聚合物光伏电池目前效率低的主要原因,并探讨了该领域进一步研究的方向和前景。 相似文献
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聚合物太阳电池由共轭聚合物给体和可溶性富勒烯衍生物受体的共混膜夹在ITO透光电极和金属电极之间所组成,具有结构简单、成本低、重量轻和可制成柔性器件等突出优点,近年来受到广泛关注。聚合物太阳电池中的给体和受体光伏材料是决定器件性能的关键。本文综述了共轭聚合物给体和富勒烯受体光伏材料的最新研究进展,对共轭聚合物受体材料和给体-受体双缆型共轭聚合物光伏材料的研究进展也进行了简要介绍。在共轭聚合物给体材料中对聚噻吩衍生物以及含有苯并噻二唑的窄带隙D-A共聚物进行了重点介绍。 相似文献
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近年来,苯并[1,2-b:4,5-b']二噻吩(benzo[1,2-b:4,5-b']dithiophene,BDT)作为构筑给体-受体结构有机半导体材料的优良电子给体,受到越来越多的重视,已广泛应用于场效应晶体管和有机光伏电池等领域。BDT类有机共轭材料具有优良的能级结构,同时又具有较高的载流子迁移率,目前报道的基于BDT的有机共轭聚合物的最高光电转换效率达到9.2%(单节光伏器件的最高效率),显示了其在有机太阳能电池领域巨大的应用前景。本文从BDT的结构修饰出发,系统地综述了基于BDT的有机光伏材料的最新研究进展,重点讨论BDT类光伏材料能级结构和聚集态形貌对光电性能的影响。 相似文献
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从方法学上总结了目前石墨烯/导电聚合物复合材料的制备途径,重点介绍了其在能源领域作为超级电容器电极材料的应用,并归纳了其在传感器材料、燃料电池、太阳能电池、电致变色器件及锂离子电池等方面的研究进展. 相似文献
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综述了以p-型共轭聚合物为给体、n-型有机半导体为受体的非富勒烯聚合物太阳电池光伏材料最新研究进展,包括n-型共轭聚合物和可溶液加工小分子n-型有机半导体(n-OS)受体光伏材料,以及与之匹配的p-型共轭聚合物给体光伏材料.介绍的n-型共轭聚合物受体光伏材料包括基于苝酰亚胺(BDI)、萘酰亚胺(NDI)以及新型硼氮键连受体单元的D-A共聚物受体光伏材料,目前基于聚合物给体(J51)和聚合物受体(N2200)的全聚合物太阳电池的能量转换效率最高达到8.26%.n-OS小分子受体光伏材料包括基于BDI和NDI单元的有机分子、基于稠环中心给体单元的A-D-A型窄带隙有机小分子受体材料等.给体光伏材料包括基于齐聚噻吩和苯并二噻吩(BDT)给体单元的D-A共聚物,重点介绍与窄带隙A-D-A结构小分子受体吸收互补的、基于噻吩取代BDT单元的中间带隙二维共轭聚合物给体光伏材料.使用中间带隙的p-型共轭聚合物为给体、窄带隙A-D-A结构有机小分子为受体的非富勒烯聚合物太阳电池能量转换效率已经突破12%,展示了光明的前景.最后对非富勒烯聚合物太阳电池将来的发展进行了展望. 相似文献
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In recent years,conjugated polymers have attracted great attention in the application as photovoltaic donor materials in polymer solar cells(PSCs).Broad absorption,lower-energy bandgap,higher hole mobility,relatively lower HOMO energy levels,and higher solubility are important for the conjugated polymer donor materials to achieve high photovoltaic performance.Side-chain engineering plays a very important role in optimizing the physicochemical properties of the conjugated polymers.In this article,we review recent progress on the side-chain engineering of conjugated polymer donor materials,including the optimization of flexible side-chains for balancing solubility and intermolecular packing(aggregation),electron-withdrawing substituents for lowering HOMO energy levels,and two-dimension(2D)-conjugated polymers with conjugated side-chains for broadening absorption and enhancing hole mobility.After the molecular structural optimization by side-chain engineering,the2D-conjugated polymers based on benzodithiophene units demonstrated the best photovoltaic performance,with powerconversion efficiency higher than 9%. 相似文献
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聚合物太阳能电池因其质量轻、柔性、可溶液制备成大面积器件等优点受到学术界和产业界的广泛关注。目前,聚合物太阳能电池仍然处于实验室研究阶段,研究重点依然集中在器件效率以及使用寿命的进一步提高上。开发新颖高效的聚合物太阳能电池材料是持续提高电池器件效率的原动力。给体(D)-受体(A)型共轭聚合物材料具有宽的光谱吸收、可调节的能级水平、强的分子内电荷转移过程等特征,成为聚合物太阳能电池材料设计的重要策略之一。众多的给体和受体结构单元已被筛选用来构建高性能的D-A型共轭聚合物光伏材料。其中,萘并双噻二唑及其衍生稠环受体结构单元因其具有刚性的共轭平面、强的吸电子能力等特点,被广泛用于设计高性能的聚合物太阳能电池给体材料。基于此,本文综述了萘并双噻二唑及其衍生稠环受体构筑单元在发展D-A型聚合物给体材料方面的应用,并对该类材料的发展方向和前景提出了展望。 相似文献
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《Journal of Energy Chemistry》2015,(6)
In recent years, a large library of n-type polymers have been developed and widely used as acceptor materials to replace fullerene derivatives in polymer solar cells(PSCs), stimulating the rapid expansion of research on so-called all-polymer solar cells(a PSCs). In particular, rylene diimide-based n-type polymer acceptors have attracted broad research interest due to their high electron mobility, suitable energy levels, and strong light-harvesting ability in the visible region. Among various polymer acceptors, rylene diimide-based polymers presented best performances when served as the acceptor materials in a PSCs. Typically, a record power conversion efficiency(PCE) of 7.7% was very recently achieved from an a PSC with a rylene diimide polymer derivative as the acceptor component. In this review, we highlight recent progress of n-type polymers originated from two significant classes of rylene diimide units, namely naphthalene diimide(NDI) and perylene diimide(PDI), as well as their derivatives for a PSC applications. 相似文献
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Polymer solar cells (PSCs) are composed of a blend film of a conjugated polymer donor and a soluble fullerene derivative acceptor sandwiched between a PEDOT?:?PSS coated ITO positive electrode and a low workfunction metal negative electrode. The conjugated polymer donor and the fullerene derivative acceptor are the key photovoltaic materials for high performance PSCs. For the acceptors, although [6,6]-phenyl-C(61)-butyric acid methyl ester (PC(60)BM) and its corresponding C(70) derivative PC(70)BM are dominantly used as the acceptors in PSC at present, several series of new fullerene derivatives with higher-lying LUMO energy level and better solubility were reported in recent years for further improving the power conversion efficiency of the PSCs. In this perspective paper, we reviewed the recent research progress on the new fullerene derivative acceptors, including various PC(60)BM-like C(60) derivatives, PC(60)BM bisadduct, PC(70)BM bisadduct, indene-C(60) bisadduct and indene-C(70) bisadduct, trimetallic nitride endohedral fullerenes and other C(60) derivatives with multi side chains. The synthesis and physicochemical properties of PC(60)BM and PC(70)BM were also introduced considering the importance of the two fullerene acceptors. 相似文献
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Xiao-Feng Lin Zi-Yan Zhang Zhong-Ke Yuan Jing Li Xiao-Fen Xiao Wei Hong Xu-Dong Chen Ding-Shan Yu 《中国化学快报》2016,27(8):1259-1270
Due to the remarkable electronic, optical, thermal, and mechanical properties, graphene-based materials have shown great potential in a wide range of technique applications. Particularly, the high transparency, conductivity, flexibility, and abundance make graphene materials highly attractive for polymer solar cells (PSCs). Graphene-based materials have been regarded as one promising candidate used in various parts in PSCs not only as electrodes, but also as interfacial layers and active layers with an aim to boost the power conversion efficiency of the devices. In this review, we summarize the recent progress about the design and synthesis of graphene-based materials for efficient PSCs along with the related challenges and future perspectives. 相似文献
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To design high efficiency polymer solar cells(PSCs), it is of great importance to develop suitable polymer donors that work well with the low bandgap acceptors, providing complementary absorption, forming interpenetrating networks in the active layers and minimizing energy loss. Recently, we developed a series of two-dimension-conjugated polymers based on bithienylbenzodithiophene-alt-benzotriazole backbone bearing different conjugated side chains, generally called J-series polymers. They are medium energy bandgap(Eg) polymers(Eg of ca. 1.80 eV)with strong absorptions in the range of 400-650 nm, and exhibit ordered crystalline structures, high hole mobilities, and more interestingly,tunable energy levels depending on the structure variations. In this feature article, we highlight our recent efforts on the design and synthesis of those J-series polymer donors, including an introduction on the polymer design strategy and emphasis on the crucial function of differential conjugated side chain. Finally, the future opportunities and challenges of the J-series polymers in PSCs are discussed. 相似文献