光敏染料在Graetzel型太阳能电池上的应用及其研究进展

对光敏染料在Graetzel型太阳能电池上的应用及其研究进展进行了综述。比较了天然染料、纯有机染料和金属有机配合物染料对此类电池的敏化效果，并讨论了染料的结构和性质对电池性能的影响，指出通过分子设计合成高效光敏染料可推动Graetzel型太阳能电池的发展和实用化。     

染料敏化太阳能电池的研究进展

综述了染料敏化太阳能电池的研究背景和发展过程,包括了光阳极、光敏染料和电解质的研究进展,详细阐述了该电池国内外各项关键技术的实验和产业化研究最新成果,着重分析了染料敏化太阳电池的未来发展趋势,并展望了该电池的应用前景。     

联噻吩型光敏染料的研究进展

简要介绍了染料敏化太阳能电池的研究现状及染料敏化太阳能电池的结构、工作原理.重点将近10年来应用于染料敏化太阳能电池中的,以联噻吩作为π共轭体系的D-π-A型有机染料进行了总结,评述了它们的光电转换性能.同时,总结了将联噻吩基团引入到钌配合物染料中,对电池性能的影响.为设计合成具有高光电转换效率的染料提供了参考.介绍了联噻吩型染料重要中间体的合成方法.     

桥连吸附基团对酞菁敏化太阳能电池性能的影响

染料敏化太阳能电池中,光敏剂是影响电池光伏性能的重要因素,其中酞菁类光敏剂在红光区具有优良的光吸收性能,光化学稳定性高。根据染料敏化太阳能电池的工作原理,通过扩大共轭结构和引入吸电子结构,可以有效的调节染料的能级。综述了吸附基团和桥连结构对染料光敏性能的影响,吸附基团通过共轭结构或直接连接在酞菁环上,会有效的增强电子的流动。     

染料敏化太阳能电池及敏化剂研究进展

随着太阳能利用技术的飞速发展,染料敏化太阳能电池的研究也取得了长足的进步.在对染料敏化太阳能电池结构分析和机理描述的基础上,对高性能染料敏化太阳能电池的光敏剂结构、光阳极组成、电解质成分以及对电极材料等的要求进行了探讨.同时,阐述了染料敏化太阳能电池常用表征参数,短路电流和开路电压越大,转化效率越高,电池性能越好.重点...     

提高染料敏化太阳能电池转化率研究新进展

染料敏化太阳能电池具有低生产成本、简单生产工艺以及环境友好型等优点,使其成为太阳能电池研究领域的热点。介绍了染料敏化太阳能电池的基本结构和工作原理,结合国内外最近的研究动态,重点阐述了在染料敏化太阳能电池研究领域的光阳极、敏化染料和电解质等构成部分的研究进展。     

染料敏化太阳能电池固态电解质的研究进展

染料敏化太阳能电池,因具有原材料价格低廉、制作工艺简单、光电转换效率高等优点,成为最具市场潜力的太阳能电池之一。电解质作为染料敏化太阳能电站的重要组成部分,担负着还原染料、运输载流子完成电池内部循环的作用。染料敏化太阳能电池的实用化及产业化需求,要求设计、制备高性能的固态染料敏化太阳能电池。介绍了染料敏化太阳能电池的基本机构和工作原理,阐述了国内外的研究发展现状,展望了发展前景。     

羧基类不对称锌酞菁敏化染料的研究进展

染料敏化太阳能电池是太阳能电池的重要发展方向之一,染料敏化剂是影响电池光电转换效率的重要因素。探讨了染料敏化太阳能电池中羧基类不对称锌酞菁作为光敏剂的研究进展及其成果,提出对未来发展的展望。     

纳米氧化物太阳能电池研究进展

介绍了新型低成本纳米氧化物染料敏化太阳能电池的优势特点及基本原理.纳米氧化物材料在染料敏化太阳能电池的光阳极和电解质中有着特殊的应用,在电池中起到了非常关键的作用.围绕电池中光阳极和电解质所用的纳米氧化物材料,结合清华大学科研实例,综述了光阳极用纳米氧化物的制备方法及性能,分析了电子传递和复合对电池性能的影响,以及纳米...     

染料敏化太阳能电池染料敏化剂的研究进展

染料敏化太阳能电池(DSSC)具有原材料丰富、制备成本低廉、工艺简单,在工业化生产中具有较大的竞争优势.在染料敏化太阳能电池中,敏化剂的分子结构及其在二氧化钛表面的聚集体形态对电池的性能都有很大的影响.本文详细介绍了不同染料敏化剂对于染料敏化太阳电池性能的直接影响,以及对其未来发展前景的分析和展望.     

Effect of different electron donating groups on the performance of dye-sensitized solar cells

A series of organic sensitizers containing identical π-spacers and electron acceptors but different, aromatic amine electron-donating groups, were used in dye-sensitized solar cells to study the effect of the electron donating groups on device performance. The derived photophysical and photovoltaic properties, as well as density functional theory calculations, revealed that the tetrahydroquinoline dye was prone to aggregate upon the surface of titanium dioxide owing to the dye's planar structure. A 45% improvement in efficiency of a tetrahydroquinoline dye based cell was achieved when chenodeoxycholic acid was employed as co-adsorbent. However, the airscrew type of triphenylamine unit and Y type structure of the substituted phenothiazine framework suppressed dye aggregation on titanium dioxide. The efficiency of a phenothiazine dye-based cell fabricated using saturated co-adsorbent in dichloromethane was only 15% greater than that achieved in the absence of co-adsorbent. Electrochemical Impedance Spectroscopy was used to determine the interfacial charge transfer process occurring in solar cells that employed different dyes in both the absence and presence of chenodeoxycholic acid as co-adsorbent.     

Variation of carboxylate-functionalized cyanine dyes to produce efficient spectral sensitization of nanocrystalline solar cells

The sensitizing properties of cyanine dyes in dye-sensitized nanocrystalline TiO₂ solar cells are shown to be controlled by the character of the carboxyl functions used to attach the molecules to the surface. These tether functions affect the degree of aggregation of the subject cyanine dyes attached to TiO₂ as well as the short circuit photocurrents they produce in these solar cells. Use of two carbons, acetic acid linkages, on the dye results in performance in a sensitized solar cell comparable with a control ruthenium complex, in contrast to the greatly diminished performance of dyes with longer, methylbenzoic acid linkages.     

New dye-sensitized solar cells obtained from extracted bracts of bougainvillea glabra and spectabilis betalain pigments by different purification processes

The performance of a new dye-sensitized solar cell (DSSC) based in a natural dye extracted from the Bougainvillea spectabilis' bracts, is reported. The performance of this solar cell was compared with cells prepared using extract of the Bougainvillea glabra and mixture of both extracts; in both cases the pigments were betalains, obtained from Reddish-purple extract. These dyes were purified to different extents and used for the construction of solar cells that were electrically characterized. The materials were characterized using FTIR and UV-Vis. Solar cells were assembled using TiO(2) thin film on indium tin oxide (ITO)-coated glass; a mesoporous film was sensitized with the Bougainvillea extracts. The obtained solar energy conversion efficiency was of 0.48% with a current density J(SC) of 2.29 mA/cm(2) using an irradiation of 100 mW/cm(2) at 25 °C.     

有机P－N结太阳能电池的研究

有机Ｐ－Ｎ结太阳能电池的研究董长征，王维波，蓝闽波，任绳武，肖绪瑞，周庆复，许慧君（华东理工大学，上海２００２３７）（中国科学院感光化学研究所，北京１００１０１）关键词有机太阳能电池，酞菁，红近年来，以有机化合物作为光电转换材料的研究报道很多￣［１～...     

Novel Self-assembled Isonicotinic Acid Derivative and Zinc Porphyrin Dyads and Applications in Dye Sensitized Solar Cells

A new self-assemblies based on double-deck dyes ZnTPP-Wi (i?=?1–3) were synthesized and applied in dye-sensitized solar cells (DSSCs). Anchoring molecules (Wi i?=?1–3) consisting of phenyl carboxyl acid and cyanoacetic acid group. Capping layer dyes zinc meso-tetraphenylporphine (ZnTPP) with anchoring molecules Wi through axially coordination bonds of Zn-to-ligand self-assemblies solar cells devices. We herein report a consisting acylamide and cyanoacetic acid group W3 as an anchoring molecule for the axial coordination with upper zinc porphyrin ZnTPP. W3 was synthesized by introducing acylamide and cyanoacetic acid groups may inhibit adverse dye aggregation and improving electrons are effectively injected into the TiO₂ semiconductor surface. Thus, W3 anchoring molecules can be used to fabricate efficient solar cells with ZnTPP porohyrin dye, achieving good photoelectric performance, indicative of their general applicability in fabricating good-performance DSSCs. The assembled modes were also verified by transmission electron microscopy (TEM). The photoelectrochemical efficiencies for dye ZnTPP-W3 are best than those of self-assembly dyes prevailingly ascribed to larger J_sc and V_oc.

     

天然染料敏化太阳能电池的研究进展

简单回顾了染料敏化太阳能电池的发展以及目前存在的弊端,分析了天然染料作为染料敏化太阳能电池敏化剂的优、缺点及发展潜力。按所用天然染料种类的不同,详细综述了近年来天然染料敏化太阳能电池的国内外研究进展,进而合理分析和预测了天然染料敏化太阳能电池的发展趋势及实用化必须解决的关键问题。     

Novel fluoranthene dyes for efficient dye-sensitized solar cells

Three, novel, fluoranthene-based dyes, 2-cyano-3-(5-(7,12-diphenylbenzo[k]fluoranthen-3-yl)thiophen-2-yl)acrylic acid, 2-(5-((5-(7,12-diphenylben-zo[k]fluoranthen-3-yl)thiophen-2-yl)methylene)-4-oxo-2-thioxothiazolidin-3-yl)acetic acid and 2-cyano-3-(4-(2-(7,12-diphenylbenzo[k]fluoranthen-3-yl)ethynyl) phenyl) acrylic acid, were synthesized for application as sensitizers in dye-sensitized solar cells. In each dye, the 7,12-diphenyl-benzo[k]fluoranthene moiety acted as electron donor with phenyl and thiophene units as electron spacers and carboxylic acid as electron acceptor. Tuning of the HOMO and LUMO energy levels was conveniently accomplished by changing the spacer and acceptor moiety, as confirmed using electrochemical measurements. Maximum solar energy:electricity conversion efficiency was 4.4% under AM 1.5 solar simulator (100 mW cm^?2) for 2-cyano-3-(5-(7,12-diphenylbenzo[k]fluoranthen-3-yl)thiophen-2-yl)acrylic acid. The results suggest that dyes based on fluoranthene donor are promising candidates for high performance, dye-sensitized solar cells.     

Efficiency enhancement of graphene/silicon-pillar-array solar cells by HNO3 and PEDOT-PSS

A single-layer graphene film was grown on copper foil by chemical vapor deposition and transferred onto a silicon-pillar-array (SPA) substrate to make a Schottky junction solar cell. The SPA substrate was specifically designed to suppress reflectance and enhance light absorption. The energy conversion efficiency of the prepared graphene/SPA solar cells achieved a maximum of 2.90% with a junction area of 0.09 cm(2). HNO(3) was employed to dope the graphene in the solar cells, and the time dependence of HNO(3) treatment on the cell performance was studied. Poly(3,4-ethylenedioxythiophene) polystyrenesulfonic acid (PEDOT-PSS) was also introduced in graphene/SPA solar cells by spin coating on top of the graphene film, and its modification on the cell performance was characterized. The results show that both HNO(3) and the PEDOT-PSS film could enhance the energy conversion efficiency of graphene/SPA solar cells.     

Organic dyes with oligo-n-hexylthiophene for dye-sensitized solar cells: Relation between chemical structure of donor and photovoltaic performance

Organic dyes with the oligohexylthiophene linkage having several donor parts, carbazole, indole, and indoline, were newly synthesized as sensitizers for dye-sensitized solar cells. The carbazole was most efficient donor moiety for DSSCs among these dyes with the oligothiophene linkage. Carbazole dyes were adsorbed with larger amount of molecules on the TiO₂ film than both indole dyes and indoline dyes. Therefore, both the V_OC and the electron lifetime of DSSCs with the carbazole dyes were highly observed. The decreasing of J_SC of DSSCs with indole and indoline dyes also caused by the reducing the adsorption amount of dyes.     

活性染料染色废水的日光脱色降解

在太阳光照射条件下，使用铁(Ⅲ)-草酸盐络合物／H2O2对存在于水中三种中温型活性染料进行光催化降解研究，重点考察了太阳光的强度和活性染料的浓度对脱色降解反应的影响结果表明：太阳光的强度低于50001ux，染料的脱色率低于40％；在高于400001ux、照射60分钟脱色率高于98％，在高于900001ux时，照射10分钟，可使活性蓝MS脱色率接近100%，太阳光的强度越高，溶液中的染料浓度越低。