共查询到18条相似文献,搜索用时 531 毫秒
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《化学通报》2005,68(1):78-80
[w0 0 1 ]染料敏化纳米薄膜太阳电池中电解质的研究进展ProgressoftheElectrolyteinDye_sensitizedSolarCells史成武1,2 戴松元1 王孔嘉1 潘旭1 郭力1(1中国科学院等离子体物理研究所 合肥 2 3 0 0 3 1 ; 2 合肥工业大学 合肥 2 3 0 0 0 9) 对染料敏化纳米薄膜太阳电池中的电解质研究进行了综述。根据电解质的类型将太阳电池分为液体电解质电池、溶胶_凝胶 (准固态 )电解质电池和固态电解质电池。阐述了电解质中各组成成分的作用 ,对比了这三种太阳电池的性能参数 ,并分析了这三种太阳电池的优缺点。 Dye_sensitizeds… 相似文献
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染料敏化太阳能电池(DSCs)由于其清洁廉价的优点而受到广泛关注。经过多年的研究,目前电池的转换效率已十分可观。电解质在染料敏化太阳能电池中起到桥梁作用,担负着还原染料、输运载流子完成电池内部循环的作用。电解质根据物理状态不同将其分为液态电解质、准固态电解质和固态电解质。介绍了这三种不同电解质的性能、各自的优点及存在问题,并对染料敏化太阳能电池中电解质在国内外研究发展现状进行了综述。 相似文献
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本文介绍了一种制备染料敏化太阳电池(DSC)准固态电解质的新方法——混合溶剂法.该方法具有制作工艺简单、所用溶剂对人及环境无污染等优点.将混合溶剂法制备的准固态电解质应用于太阳电池,并系统研究了电解质组成及环境温度对电解质及其DSC性能的影响规律. 相似文献
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染料敏化太阳能电池(Dye Sensitized Solar Cells)是新一代将光能转化为电能的重要能源转换装置。它具有低廉的材料和器件制作成本、较高的光电转换效率以及电池制作过程简单等诸多优点,拥有广阔的应用空间和巨大的潜在商业价值,因而吸引了广泛的研究关注。染料敏化太阳能电池主要由染料敏化的光阳极、电解质和对电极三个部分组成。其中,电解质作为染料敏化太阳能电池的重要组成部分,其对离子的传导和扩散,以及促进染料再生的能力极大地影响着染料敏化太阳能电池的电荷传输和光电性能。本文聚焦于染料敏化太阳能电池准固态电解质体系,主要从聚合物凝胶电解质、有机小分子凝胶电解质和无机纳米粒子凝胶电解质三大方面综述讨论了该研究领域当前最新研究进展,并对其未来研究趋势进行了展望。 相似文献
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Gao F Wang Y Shi D Zhang J Wang M Jing X Humphry-Baker R Wang P Zakeeruddin SM Grätzel M 《Journal of the American Chemical Society》2008,130(32):10720-10728
We report two new heteroleptic polypyridyl ruthenium complexes, coded C101 and C102, with high molar extinction coefficients by extending the pi-conjugation of spectator ligands, with a motivation to enhance the optical absorptivity of mesoporous titania film and charge collection yield in a dye-sensitized solar cell. On the basis of this C101 sensitizer, several DSC benchmarks measured under the air mass 1.5 global sunlight have been reached. Along with an acetonitrile-based electrolyte, the C101 sensitizer has already achieved a strikingly high efficiency of 11.0-11.3%, even under a preliminary testing. More importantly, based on a low volatility 3-methoxypropionitrile electrolyte and a solvent-free ionic liquid electrolyte, cells have corresponding >9.0% and approximately 7.4% efficiencies retained over 95% of their initial performances after 1000 h full sunlight soaking at 60 degrees C. With the aid of electrical impedance measurements, we further disclose that, compared to the cell with an acetonitrile-based electrolyte, a dye-sensitized solar cell with an ionic liquid electrolyte shows a feature of much shorter effective electron diffusion lengths due to the lower electron diffusion coefficients and shorter electron lifetimes in the mesoporous titania film, explaining the photocurrent difference between these two type devices. This highlights the next necessary efforts to further improve the efficiency of cells with ionic liquid electrolytes, facilitating the large-scale production and application of flexible thin film mesoscopic solar cells. 相似文献
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Huo Z Dai S Zhang C Kong F Fang X Guo L Liu W Hu L Pan X Wang K 《The journal of physical chemistry. B》2008,112(41):12927-12933
Stable quasi-solid-state dye-sensitized solar cells (DSC) were fabricated using 12-hydroxystearic acid as a low molecular mass organogelator (LMOG) to form gel electrolyte. TEM image of the gel exhibited the self-assembled network constructed by the LMOG, which hindered flow and volatilization of the liquid. The formation of less-mobile polyiodide ions such as I 3 (-) and I 5 (-) confirmed by Raman spectroscopy increased the conductivity of the gel electrolytes by electronic conduction process, which should be rationalized by the Grotthuss-type electron exchange mechanism caused by rather packed polyiodide species in the electrolytes. The results of the accelerated aging tests showed that the gel electrolyte based dye-sensitized solar cell could retain over 97% of its initial photoelectric conversion efficiency value after successive heating at 60 degrees C for 1000 h and device degradation was also negligible after one sun light soaking with UV cutoff filter for 1000 h. 相似文献
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染料敏化太阳电池研究进展 总被引:7,自引:0,他引:7
本文介绍了染料敏化太阳电池(DSC)的结构和基本原理,综述了DSC各项关键技术的实验和产业化研究最新成果。对DSC中的几个重要组成部分:纳米半导体薄膜、染料敏化剂、氧化还原电解质、对电极和导电基底材料等几个方面的研究进展进行了详细的评述。回顾了DSC从实验室小电池研究到大规模产业化研究的发展,对该领域未来发展前景进行了展望。 相似文献
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Nakade S Kanzaki T Wada Y Yanagida S 《Langmuir : the ACS journal of surfaces and colloids》2005,21(23):10803-10807
To measure electron diffusion coefficients (D) and electron lifetimes (tau) of dye-sensitized solar cells (DSC), we introduced stepped light-induced transient measurements of photocurrent and voltage (SLIM-PCV), which can simplify the optical setup and reduce measurement time in comparison to conventional time-of-flight and frequency-modulated measurements. The method was applied to investigate the influence of the viscosity of a thermally stable high-boiling-point solvent on the energy conversion efficiency of DSCs. By systematic study of the influence of the viscosity, the species of cations as the counter charge of I(-)/I(3)(-), and the concentrations of electrolytes, we concluded that a lower dye cation reduction rate due to slower iodine diffusion is a limiting factor for a highly viscous electrolyte system. On the other hand, comparable values of D and increased values of tau were observed in a highly viscous electrolyte. By employing 0.5 M TBAI and 0.05 M I(2) in propylene carbonate, the efficiency of the DSC became comparable to that of a DSC using conventional electrolytes consisting of LiI, imidazolium iodide, and 4-tert-butylpyridine in methoxyacetonitrile. The simultaneous evaluation of D and tau through the appropriately simple measurement realizes fast optimization of the efficient and reliable DSC composed of thermally stable but often viscous electrolytes. 相似文献
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An organic sensitizer with a fused dithienothiophene unit for efficient and stable dye-sensitized solar cells 总被引:1,自引:0,他引:1
Qin H Wenger S Xu M Gao F Jing X Wang P Zakeeruddin SM Grätzel M 《Journal of the American Chemical Society》2008,130(29):9202-9203
We report a high molar extinction coefficient organic sensitizer for high efficiency dye-sensitized solar cells. In combination with a solvent-free ionic liquid electrolyte, we have demonstrated a approximately 7% cell showing an excellent stability measured under the thermal and light soaking dual stress. This is expected to have an important practical consequence on the production of flexible, low-cost, and lightweight DSC based on plastic matrix. 相似文献
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以琼脂糖为聚合物基质,N-甲基吡咯烷酮为溶剂,磁性纳米粒子四氧化三铁为无机纳米颗粒添加剂制备了用于染料敏化太阳能电池(DSSC)的磁性聚合物电解质.通过研究不同小分子表面活性剂,聚乙二醇(PEG200)、曲拉通(TritonX-100)、乙酰丙酮和三者混合的表面活性剂对掺杂有1%(w)Fe3O4的磁性聚合物电解质离子电导率的影响,发现PEG200的加入可有效提高琼脂糖基磁性聚合物电解质的离子电导率.同时,对不同PEG200浓度添加下的电解质进行离子电导率测试研究发现:当PEG200加入量为61.8%(w)时,电解质具有最佳的离子电导率(2.88×10-3S·cm-1);对染料敏化太阳能电池进行电化学交流阻抗谱(EIS)测试的结果表明:染料敏化太阳能电池的电子寿命和复合电阻随着PEG200浓度的增加是先增大后减小,最大的电子寿命和复合电阻出现在PEG200浓度为68.3%(w)处. 相似文献
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Yu Z Vlachopoulos N Gorlov M Kloo L 《Dalton transactions (Cambridge, England : 2003)》2011,40(40):10289-10303
The present review offers a survey of liquid electrolytes used in dye-sensitized solar cells from the beginning of photoelectrochemical cell research. It handles both the solvents employed, and the prerequisites identified for an ideal liquid solvent, as well as the various effects of electrolyte solutes in terms of redox systems and additives. The conclusions of the present review call for more detailed molecular insight into the electrolyte-electrode interface reactions and structures. 相似文献