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齐聚噻吩及其衍生物具有良好的环境稳定性和优异的光电性能,是一类具有良好发展前景的有机功能材料。本文综述了近年来齐聚噻吩及其衍生物的发展状况,简述了其主要合成方法;根据结构将其分为两大类:一类是不含极性基团或仅含弱极性基团的齐聚噻吩衍生物,另一类是给体-受体型齐聚噻吩衍生物,并讨论了它们作为有机光伏材料的应用。给体-受体型齐聚噻吩衍生物由于分子内的电荷传输作用,其光物理和电化学性能均优于不含极性基团的齐聚噻吩,该类材料在小分子光伏器件中具有最高的光电转换效率(>10%)。文章最后简要分析了影响光伏器件性能的主要因素。 相似文献
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三苯胺类自供能电致变色材料合成及器件开发 总被引:1,自引:0,他引:1
设计并合成了一种新型三苯胺衍生物: (4-((4-(二甲基氨基)苯基)(苯基)氨基)苄基)膦酸, 并研究了它的光谱电化学性质和光伏性质. 光谱电化学谱图表明该化合物具有电致变色性能: 通过施加不同电压, 该化合物薄膜可以在透明态和着色态之间转换, 且在629 nm处透过率对比度达到最大, 为64.2%. 由该材料组装成的自供能电致变色器件具有光伏性能, 光电转化效率可以达到0.32%. 和传统的光电变色器件相比, 该新型器件具有结构简单、制备成本低廉、绿色环保等特点, 预计在建筑、汽车、显示器等领域将有广泛的应用. 相似文献
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Ping LIU Wan Zhang PAN Ming Sheng HUANG Wen Ji DENG 《中国化学快报》2006,17(7):903-906
Organic photovoltaic devices have attracted a great attention because of their light weight and processability, and the ease of material design on the molecular level. There are a number of reports on organic photovoltaic devices using a variety of dyes1-… 相似文献
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以三(二亚苄基丙酮)二钯(Pd_2(dba)_3)为催化剂,三甲苯基磷(P(o-tol)_3)为配体,4,3'-十二烷基-2,2'-联二噻吩(M1)和2,8-二溴-5-(2-己基癸基)苯并三噻吩(M2)为单体,采用Stille交叉偶联反应,合成了基于苯并三噻吩和联二噻吩单元的共轭聚合物(PBTT)。采用热重分析、紫外-可见分光光度计及电化学分析分别研究了聚合物PBTT的热性能、光学性能和电化学性能。结果表明:聚合物PBTT具有优异的热稳定性和低的最高占有轨道能级(HOMO);聚合物薄膜最大吸收峰位于469 nm,光学能带隙为2.10 eV;将聚合物与[6,6]-苯基-C_(61)-丁酸甲酯(PC_(61)1BM)共混材料作为活性层制作了本体异质结构太阳能电池器件,在模拟太阳光源AM 1.5 G 100 mW/cm~2照射条件下,该器件获得了高达1.00 V的开路电压,初步的能量转化效率为0.43%。 相似文献
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Shofu Matsuda Yuuki Okuda Yoshiki Obu Norio Nagayama Minoru Umeda 《Electroanalysis》2019,31(12):2466-2471
With the objective of understanding the kinetic redox properties of triphenylamine derivatives in association with chemical reactions, for their future application in functional organic semiconductor devices, the electrochemical characteristics of 4‐(2,2‐diphenylethenyl)‐N,N‐bis(4‐methylphenyl)‐benzenamine (TPA) were evaluated. Based on cyclic voltammograms of TPA on Pt disk electrodes with diameters of 300 μm and 10 μm at slow and fast scan rates in an acetonitrile solution, the TPA.+ is stable, while the TPA2+ is unstable. Importantly, the unstable TPA2+ appears to break down by a subsequent chemical reaction. A Cottrell plot analysis from chronoamperometry of a solution containing TPA reveals that both the first and second oxidations are one‐electron reactions. Concerning the stabilization mechanism of the first oxidation state of TPA, the results of molecular orbital calculations indicate that the electrons of the HOMO level are distributed in the triphenylamine group, which induces a resonance‐stabilized TPA.+. Based on these results, TPA/TPA.+ is suggested to have a sufficient stability for further application in organic semiconductor devices. 相似文献
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N,N-二苯基取代的芳炔化合物的合成及光伏性能 总被引:1,自引:0,他引:1
以简单原料出发,通过Sonogashira偶联反应和三甲基硅基(TMS)的保护与脱保护,合成了一系列N,N-二苯基取代的芳炔化合物SC1~SC5.这类化合物是以N,N-二苯基为电子给体,羧基为电子受体,芳香炔体系为共轭桥的染料.将化合物SC5吸附到TiO2膜上制备成有机染料敏化太阳能电池,在AM 1.5,100 mW/cm2的模拟太阳光下,电池的光电转换效率(IPCE)值最大达到64%,而且在350~580 nm的范围内都可达到50%以上.电池的短路电流密度Jsc=8.0mW/cm2,开路电压Voc=0.75 V,填充因子为FF=0.70,总光电转换效率η=4.2%. 相似文献
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Ping Liu Tu Hua Chen Wan Zhang Pan Ming Sheng Huang Wen Ji Deng Yu Liang Mai An Bo Luan 《中国化学快报》2008,19(2):207-210
For the purpose of developing flexible organic photovoltaic devices, we have fabricated two flexible devices using 5-formyl- 2,2′:5′,2″:5″,2′″-quaterthiophene (4T-CHO), 5-formyl-2,2′:5′, 2″:5″,2′″:5′″,2″″-quinquethiophene (5T-CHO) and 3,4,9,10-perylenetertracarboxylic dianhydride (PTCDA). The PET-ITO/4T-CHO/PTCDA/A1 device has an open circuit voltage (Voc) of 1.56 V, photoelectric conversion efficiency of 0.77%. The PET-ITO/5T-CHO/PTCDA/A1 device has a Voc of 1.70 V, photoelectric conversion efficiency of 0.84%. The two flexible devices have high Voc (1.56 and 1.70 V). It is possible that intermolecular hydrogen bonding between -CHO group of nT-CHO and carboxylic dianhydride of PTCDA contributes to enhancing the efficiency by promoting interfacial electron transfer and eliminating the subconducting band trap sites. 相似文献
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For the purpose of developing novel photovoltaic materials, 5,5″-biformyl-2,2′:5′,2″-terthiophene (OHC-3T-CHO) and 5,5″″-biformyl-2,2′:5′,2″:5″,2″′:5″′,2″″-q-uinquethiophene (OHC-5T-CHO) were synthesized. The photovoltaic properties of OHC-3T-CHO and OHC-5T-CHO were studied. We have fabricated two flexible organic photovoltaic devices using OHC-3T-CHO, OHC-5T-CHO, and 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA). The PET-ITO (indium tin oxides coated with polyethylene terephthalate)/OHC-3T-CHO/PTCDA/Al device has an open circuit voltage (V oc ) of 1.12 V, and photoelectric conversion efficiency (PCE) of 1.00%, whereas the PET-ITO/OHC-5T-CHO/PTCDA/Al device has a V oc of 1.78 V and PCE of 1.08%. Both devices have high V oc (1.12 V and 1.78 V). It is possible that intermolecular hydrogen bonding between the –CHO group of OHC-nT-CHO and the carboxylic dianhydride of PTCDA enhanced the efficiency by promoting forward interfacial electron transfer. 相似文献
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含铕配合物的有机电致发光器件的光伏效应 总被引:2,自引:0,他引:2
自从1986年Tang发表了双层有机电致发光器件有光伏效应[1]以来,人们就一直对有机器件的光伏效应有浓厚的兴趣,特别是近年来有大量的文章报道有机器件的光伏效应。在这些报道中,使用材料中有用聚苯乙炔及其衍生物的[2,3],有用C60做电子受体的[4],但这些研究都与电致发光无关,仅研究了光电转换特性,我们研究组首次报道了电子给体发光,电子受体稀土配合物不发光的有机光伏器件[5]。本文就是在此基础上进一步研究铕配合物OEL器件的光伏效应。铕配合物OEL器件不仅仅有利于利用配体三重态能量、提高能量转换效率的潜力,而且中心离… 相似文献
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Michael R. Lee Robert D. Eckert Karen Forberich Gilles Dennler Christoph Brabec Russell A. Gaudiana 《高分子科学杂志,A辑:纯化学与应用化学》2013,50(12):1238-1246
The characteristics of a power producing flexible wire based on organic photovoltaics (OPV) and the processes by which they are produced are described in this paper. A set of materials and coating formulations used on the electrode wires are very similar to those used in the development of two dimensional photovoltaic cells and modules. The active layer of the primary electrode wire comprises the bulk heterojunction-forming P3HT/PCBM (1:1 weight ratio) that has been extensively studied in planar cells. A second wire, which is wrapped around the coated, primary electrode wire, serves as the counter electrode. Ray tracing analysis indicates that light incident on the wires is focused by the cladding onto to the active layer, coated, primary electrode wire even when it is completely shadowed by the counter electrode. Furthermore, when the counter electrode is in a position that partially shadows the primary wire, a significant percentage of the light is reflected by the counter electrode onto the primary electrode. Many hundreds of feet of OPV wire have been produced continuously for experimental purposes, and the process is capable of producing any length of PV wire desired. Efficiency values of a 200 foot spool of PV wire ranges from 2.79% to 3.27%. 相似文献
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1INTRODUCTIONMacrocyclicdioxotetramineswithvariousfunctionalpendantshavereceivedmuchattention,theintroductionofvariousadditi... 相似文献
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David Gendron Pierre‐Olivier Morin Ahmed Najari Mario Leclerc 《Macromolecular rapid communications》2010,31(12):1090-1094
New aromatic compounds with a pyridazine core have been synthesized. Four electron‐withdrawing monomers have been easily prepared from simple condensation reactions and ring closure procedures. Optimized HOMO, LUMO, and bandgap energy levels have been obtained. The resulting conjugated polymers have been tested in organic solar cells. First studies have revealed power conversion efficiencies up to 0.5% for an active area of 1.0 cm2.
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聚合物太阳能电池高效共轭聚合物给体和富勒烯受体光伏材料 总被引:1,自引:0,他引:1
聚合物太阳能电池(PSC)由共轭聚合物给体和富勒烯衍生物受体的共混膜(活性层)夹在ITO透明导电玻璃正极和低功函数金属负极之间所组成,具有制备过程简单、成本低、重量轻、可制备成柔性器件等突出优点,近年来成为国内外研究前沿和热点。当前研究的焦点是提高器件的光电能量转换效率,而提高效率的关键是高效共轭聚合物给体和富勒烯衍生... 相似文献
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本文在对有机光伏电池载流子产生机理分析的基础上,从有机光伏电池激活层的微观结构对光电转换效率影响的角度,系统介绍了目前该领域的一些重要研究成果,详细分析了影响光电转换效率的主要因素,并提出了一系列改善光伏电池效率的方法,对未来该领域的研究作了展望。 相似文献
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合成了两种低聚噻吩衍生物单体:2,3':4',2'-三噻吩(I3T)和5,5'-二醛基-2,3':4',2'-三噻吩(OHC-I3T-CHO).通过电化学方法对单体I3T和OHC-I3T-CHO进行了聚合,制备了相应的聚噻吩衍生物.研究了聚噻吩衍生物薄膜的电致变色性能.当外加一定电压时,基于单体I3T的聚噻吩衍生物薄膜可以在淡黄色和淡蓝色之间发生可逆的颜色变化,基于单体OHC-I3T-CHO的聚噻吩衍生物薄膜能在红色和墨绿色间发生可逆的颜色变化. 相似文献