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1.
体异质结型聚合物太阳能电池因具有成本低、质量轻、制备工艺简单和柔韧性好等优点,成为光伏技术领域的研究热点,其能量转化效率超过11%。体异质结层作为体异质结型聚合物太阳能电池的核心,其微观形貌影响体异质结型聚合物太阳能电池的开路电压、填充因子和短路电流,进而影响其能量转化效率。因此如何有效调控体异质结的微观形貌是提高体异质结型聚合物太阳能电池能量转换效率的关键问题之一。本文系统介绍了体异质结的形成过程,总结和论述近年发展的体异质结的微观形貌调控方法,以期为体异质结型聚合物太阳能电池的制备提供指导和借鉴。  相似文献   

2.
近年来,可交联材料在有机光电器件领域,尤其是聚合物太阳能电池领域,得到了广泛的应用研究。可交联材料作为活性层中的给体材料或受体材料以及制作有序本体异质结聚合物太阳能电池,可以提高器件的稳定性及光电转化效率。可交联材料应用于聚合物太阳能电池的电子传输层或空穴传输层,可以提高器件的开路电压、转化效率、稳定性等各项性能参数。本文根据可交联材料在聚合物太阳能电池中的功能的不同,详细地描述了可交联材料的官能团种类、处理时间、温度以及引发剂等因素对聚合物太阳能电池光电性能的影响,同时评述了可交联材料应用于聚合物太阳能电池的缓冲层及制作有序本体异质结聚合物太阳能电池的研究进展,最后展望了可交联材料在该领域的发展前景。  相似文献   

3.
二元或多元聚合物组成的本体异质结具备高度稳定的微相分离形貌,带来潜在的器件寿命和稳定性方面的巨大优势,全聚合物活性层器件因而成为有机太阳能电池的重要发展方向和研究内容.本文系统介绍近年来苝二酰亚胺类聚合物受体的研究进展,以及将这类聚合物受体应用于全聚合物太阳能电池所取得的重要成果.通过多种不同共聚单元结构的设计和筛选、主链和侧链化学结构的调控和优化,获得了一系列性能优越的苝二酰亚胺聚合物受体,这些材料的运用大幅度地提升了全聚合物太阳能电池的能量转化效率.相关的研究数据和结果也为后续酰亚胺类聚合物受体的设计开发、全聚合物本体异质结活性层的形貌特征和光电转化机制的分析和研究,以及全聚合物太阳能电池器件性能的优化和提升提供了良好的实验基础.  相似文献   

4.
有机太阳能电池光电转化效率已经突破13%,这主要归因于活性层材料的不断丰富与改进。其中,以聚合物为母体的裁剪型分子,其相比于聚合物具有明确的分子量,共轭长度可调,高消光系数,优良的结晶性等优势。本文简要介绍裁剪型分子在二元本体异质结体系,三元体系,非富勒烯体系中的应用及我们组的相关研究工作,总结了其特点并对其应用前景做了展望。  相似文献   

5.
有机太阳能电池的光电转化效率已经突破13%,这主要归因于活性层材料的不断丰富与改进。相比于聚合物,以聚合物为母体的裁剪型分子具有明确的分子量、共轭长度可调、消光系数高、结晶性优良等优势,是一类具有重要发展前景的有机光伏材料。本文简要介绍裁剪型分子在二元本体异质结体系、三元体系、非富勒烯体系中的应用及笔者课题组的相关研究工作,总结了其特点并对其应用前景做了展望。  相似文献   

6.
设计合成了主链为聚2,8-{5,11-二烷基吲哚[3,2-b]咔唑}-4,7-二[2,5-噻吩]-5,6-二烷氧基-2,1,3-苯并噻二唑,具有不同侧链的2种平面型给-受体共轭聚合物(QP-2和QP-3),研究了其热学、光物理和光伏性质.用聚合物-PC71BM([6,6]-苯基C71丁酸甲酯)共混物作为活性层构筑了本体异质结聚合物太阳能电池.其中以QP-3为给体、以PC71BM为受体的光伏电池能量转换效率最高达到2.59%,开路电压为0.72 V,短路电流为9.24 mA/cm2,填充因子为0.38.XRD结果表明,平面型共轭聚合物具有较好的结晶性,原子力显微镜(AFM)显示平面型共轭聚合物易于发生微观相分离.  相似文献   

7.
马廷丽  高玉荣 《化学进展》2011,(5):991-1013
聚合物太阳电池因具有重量轻、制备工艺简单、成本低等特点近年来受到了国内外的广泛关注.其中体异质结型聚合物太阳电池(bulk heterojunction polymer solar cell,BHJ-PSC)是目前报道的具有高性能的器件之一.本文系统地综述了BHJ-PSC的最新研究进展.首先介绍了BHJ-PSC的结构及...  相似文献   

8.
通过Stille聚合反应合成了含有苯并[1,2-b:4,5-b']二噻吩和二噻吩邻苯二甲酰亚胺的D-A结构平面共聚物PBDTPhBT.该聚合物热稳定性和在常见有机溶剂中的溶解性良好、在380~580nm范围内有强吸收.分子模拟计算的结果表明,聚合物主链具有较好的平面型.PBDTPhBT的光学带隙为2.10eV、用电化学方法测量的HOMO能级为5.23eV.以聚合物PBDTPhBT为给体、PC70BM为受体(给受体重量比为1:1)、Ca/Al为负极制备了本体异质结聚合物太阳能电池.在AM1.5,100mWcm2光照条件下器件的开路电压和短路电流分别为0.79V和5.63mAcm2,能量转换效率达到了1.76%.  相似文献   

9.
聚合物在纳米半导体材料中的应用   总被引:3,自引:0,他引:3  
半导体纳米材料在光、电、磁、催化等方面具有不同于本体的一系列特性。在纳米材料及其器件制备中,聚合物有着重要的应用。它不仅可以有效地稳定纳米晶粒尺寸,而且可以钝化表面,增强纳米微粒的发生效果。而纳米半导体对光导聚合物的光电行性也有增强作用。将电致发光聚合物与纳米半导体微粒组合而成双层异质结FL器件,可提高器件效率和寿命,甚至可以构成光导与电致发光双功能器件。  相似文献   

10.
聚合物光伏电池因具有重量轻、成本低以及可制成柔性大面积器件等优点而具有广阔的应用前景.近年来,采用共轭聚合物作为光伏电池活性层材料的研究进展十分迅速.本文介绍了聚合物光伏电池的工作原理和器件结构,综述了聚合物材料作为给体,在体相异质结型光伏器件中的最新研究进展,并对今后进一步提高这类电池的能量转换效率问题进行了探讨.  相似文献   

11.
A new design for a quasi‐solid‐state Forster resonance energy transfer (FRET) enabled solar cell with unattached Lucifer yellow (LY) dye molecules as donors and CdS/CdSe quantum dots (QDs) tethered to titania (TiO2) as acceptors is presented. The Forster radius is experimentally determined to be 5.29 nm. Sequential energy transfer from the LY dye to the QDs and electron transfer from the QDs to TiO2 is followed by fluorescence quenching and electron lifetime studies. Cells with a donor–acceptor architecture (TiO2/CdS/CdSe/ZnS‐LY/S2?‐multi‐walled carbon nanotubes) show a maximum incident photon‐to‐current conversion efficiency of 53 % at 530 nm. This is the highest efficiency among Ru‐dye free FRET‐enabled quantum dot solar cells (QDSCs), and is much higher than the donor or acceptor‐only cells. The FRET‐enhanced solar cell performance over the majority of the visible spectrum paves the way to harnessing the untapped potential of the LY dye as an energy relay fluorophore for the entire gamut of dye sensitized, organic, or hybrid solar cells.  相似文献   

12.
All‐organic dyes have shown promising potential as an effective sensitizer in dye‐sensitized solar cells (DSSCs). The design concept of all‐organic dyes to improve light‐to‐electric‐energy conversion is discussed based on the absorption, electron injection, dye regeneration, and recombination. How the electron‐donor–acceptor‐type framework can provide better light harvesting through bandgap‐tuning and why proper arrangement of acceptor/anchoring groups within a conjugated dye frame is important in suppressing improper charge recombination in DSSCs are discussed. Separating the electron acceptor from the anchoring unit in the donor–acceptor‐type organic dye would be a promising strategy to reduce recombination and improve photocurrent generation.  相似文献   

13.
A double B←N bridged bipyridyl (BNBP) is a novel electron‐deficient building block for polymer electron acceptors in all‐polymer solar cells. The B←N bridging units endow BNBP with fixed planar configuration and low‐lying LUMO/HOMO energy levels. As a result, the polymer based on BNBP units (P‐BNBP‐T) exhibits high electron mobility, low‐lying LUMO/HOMO energy levels, and strong absorbance in the visible region, which is desirable for polymer electron acceptors. Preliminary all‐polymer solar cell (all‐PSC) devices with P‐BNBP‐T as the electron acceptor and PTB7 as the electron donor exhibit a power conversion efficiency (PCE) of 3.38 %, which is among the highest values of all‐PSCs with PTB7 as the electron donor.  相似文献   

14.
Research on Chemical Intermediates - The dye-sensitized solar cells containing a triphenylamine unit as the electron donor connected with a terminal cyanoacrylic acid electron acceptor by...  相似文献   

15.
A star‐shaped electron acceptor based on porphyrin as a core and perylene bisimide as end groups was constructed for application in non‐fullerene organic solar cells. The new conjugated molecule exhibits aligned energy levels, good electron mobility, and complementary absorption with a donor polymer. These advantages facilitate a high power conversion efficiency of 7.4 % in non‐fullerene solar cells, which represents the highest photovoltaic performance based on porphyrin derivatives as the acceptor.  相似文献   

16.
We report here the synthesis and electrochemical and photophysical properties of a series of easily prepared dipolar organic dyes and their application in dye-sensitized solar cells (DSSCs). For the six organic dyes, the molecular structures comprised a triphenylamine group as an electron donor, a cyanoacrylic acid as an electron acceptor, and an electron-deficient diphenylquinoxaline moiety integrated in the π-conjugated spacer between the electron donor and acceptor moieties. The incorporation of the electron-deficient diphenylquinoxaline moiety effectively reduces the energy gap of the dyes and broadly extends the spectral coverage. DSSCs based on dye 6 produced the best overall cell performance of 7.35?%, which translates to approximately 79?% of the intrinsic efficiency of the DSSCs based on the standard N719 dye under identical experimental conditions. The high performance of DSSCs based on dye 6 among the six dyes explored is attributed to the combined effects of high dye loading on a TiO(2) surface, rapid dye regeneration, and effective retardation of charge recombination.  相似文献   

17.
Polymer solar cells (PSCs) were fabricated using a ternary blend film consisting two conjugated polymers and a soluble fullerene derivative as the donor and acceptor materials, respectively. And, to compare ternary blend system, the single‐component copolymers consisting of the repeating units of each of the copolymers, used in ternary blend solar cells, were designed and synthesized for use as the electron donor materials in binary blend solar cells. We systematically investigated the field‐effect carrier mobilities and the optical, electrochemical, and photovoltaic properties of the copolymers. Under optimized conditions, the binary blend polymer systems showed power conversion efficiencies (PCEs) for the PSCs in the range 3.87–4.16% under AM 1.5 illumination (100 mW cm?2). All polymers exhibited similar PCEs that did not depend on the ratio of repeating units. The binary blend solar cell containing a single‐component copolymer as the electron donor material performed better than the ternary blend solar cell in this work. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011  相似文献   

18.
Dipolar metal‐free sensitizers (D‐π‐A; D=donor, π=conjugated bridge, A=acceptor) consisting of a dithiafulvalene (DTF) unit as the electron donor, a benzene, thiophene, or fluorene moiety as the conjugated spacer, and 2‐cyanoacrylic acid as the electron acceptor have been synthesized. Dimeric congeners of these dyes, (D‐π‐A)2, were also synthesized through iodine‐induced dimerization of an appropriate DTF‐containing segment. Dye‐sensitized solar cells (DSSCs) with the new dyes as the sensitizers have cell efficiencies that range from 2.11 to 5.24 %. In addition to better light harvesting, more effective suppression of the dark current than the D‐π‐A dyes is possible with the (D‐π‐A)2 dyes.  相似文献   

19.
We report here the synthesis and electrochemical and photophysical properties of a series of easily prepared dipolar organic dyes and their application in dye‐sensitized solar cells (DSSCs). For the six organic dyes, the molecular structures comprised a triphenylamine group as an electron donor, a cyanoacrylic acid as an electron acceptor, and an electron‐deficient diphenylquinoxaline moiety integrated in the π‐conjugated spacer between the electron donor and acceptor moieties. The incorporation of the electron‐deficient diphenylquinoxaline moiety effectively reduces the energy gap of the dyes and broadly extends the spectral coverage. DSSCs based on dye 6 produced the best overall cell performance of 7.35 %, which translates to approximately 79 % of the intrinsic efficiency of the DSSCs based on the standard N719 dye under identical experimental conditions. The high performance of DSSCs based on dye 6 among the six dyes explored is attributed to the combined effects of high dye loading on a TiO2 surface, rapid dye regeneration, and effective retardation of charge recombination.  相似文献   

20.
A star-shaped electron acceptor with porphyrin as core and rhodanine-benzothiadiazole as end groups linked with ethynyl units was developed for non-fullerene solar cells, in which a PCE of 1.9% with broad photo response was achieved when combining with a diketopyrrolopyrrole-polymer as electron donor.  相似文献   

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