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研究了染料敏化纳晶薄膜太阳电池由于价格低、性能好而备受关注,对电极作为染料敏化纳晶薄膜太阳电池的重要组成部分,其性能对电池性能有很大影响。综述了目前对电极的研究进展,重点分析了对镀铂电极、碳电极的研究进展,并简要介绍了导电聚合物电极和柔性对电极在染料敏化纳晶薄膜太阳电池中的应用。 相似文献
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染料敏化纳米晶体TiO2太阳电池作为新型太阳电池,已经引起人们的广泛重视。该太阳电池制备方法简单、成本低廉,且能够获得比较理想的光电转换效率。本文详细介绍了染料敏化纳米晶体TiO2太阳电池的研究现状和存在的问题,对该领域的未来发展做出了一些预测。 相似文献
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自从1991年M.Grhtzel教授将纳米多孔的概念引入染料敏化宽禁带TiO2半导体研究中,获得光电转换效率7.1%的染料敏化太阳电池(Dyesensitized Solar Cell,以下略作DSC)以来,DSC以其潜在的低成本、相对简单的制作工艺和技术等优势赢得了人们的广泛重视。 相似文献
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本文对二氧化钛染料敏化太阳电池的工作原理、性能特点及工艺作了详细评述.着重对国内外染料电池的最新研究成果、研究趋势进行了剖析,特别是对电池工艺的技术特点、主要优势作了深入的探讨.并就染料电池尚存在的问题及进一步发展态势提出一定的看法. 相似文献
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分别采用了3种不同的方法制备了用于染料敏化TiO2太阳电池的铂金对电极,并分别以此3种铂金对电极组装染料敏化太阳电池,对比、分析和探讨了它们对光电转化性能的影响。结果表明:采用纳米粒子电沉积法与电化学电镀法制备的铂金对电极,具有较高的催化活性,以这两种方法制备的铂金对电极组装的DSSCs获得较好的光电转化性能,电池的光电转化效率分别为6.40%和6.63%,且采用纳米粒子电沉积法制备的铂金对电极铂金含量较低;而采用热分解法制备的铂金对电极来组装的DSSCs获得的光电性能相对较低,电池效率为5.58%。 相似文献
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Solar cells represent a principal energy technology to convert light into electricity. Commercial solar cells are at present predominately produced by single- or multi-crystalline silicon wafers. The main drawback to silicon-based solar cells, however, is high material and manufacturing costs. Dye-sensitized solar cells (DSSCs) have attracted much attention during recent years because of the low production cost and other advantages. The photoanode (working electrode) plays a key role in determining the performance of DSSCs. In particular, nanostructured photoanodes with a large surface area, high electron transfer efficiency, and low electron recombination facilitate to prepare DSSCs with high energy conversion efficiency. In this review article, we summarize recent progress in the development of novel photoanodes for DSSCs. Effect of semiconductor material (e.g. TiO2, ZnO, SnO2, N2O5, and nano carbon), preparation, morphology and structure (e.g. nanoparticles, nanorods, nanofibers, nanotubes, fiber/particle composites, and hierarchical structure) on photovoltaic performance of DSSCs is described. The possibility of replacing silicon-based solar cells with DSSCs is discussed. 相似文献
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Xiao-Dong Qiao Xin-Yu Ye Yang-Hong Wu Li-Jiao Ma Bing-Xin Lei Zhen-Fan Sun 《Advanced Powder Technology》2021,32(1):99-105
Different TiO2 mesoporous structures, including core-shell spheres (CCSs) and micro-tubes (MTs), are synthesized through adjusting the pH of the solution using TiOSO4 as titanium source in a hydrothermal route. TiO2 CSSs with an average diameter of 1.3–3.5 μm exhibit excellent light scattering property and high specific surface area (177.63 m2 g?1). TiO2 MTs show ultrahigh specific surface area of 276.03 m2 g?1. Dye-sensitized solar cell is fabricated using TiO2 CSSs as the light scattering layer and TiO2 nanoparticles (NPs) layer as the bottom layer. The efficiency of Cell-NPs + CSSs is up to 9.24% due to the good light scattering effect and excellent dye loading capacity. Furthermore, TiO2 MTs are introduced to form the NPs/MTs bottom layer. The Cell-NPs/MTs + CSSs achieves an outstanding efficiency of 9.60% due to the further optimized electron transport path. 相似文献
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A series of sculptured porous nano-columnar titanium oxide films were prepared by glancing angle deposition (GLAD) method using an electron-beam evaporation system. The films were deposited on ITO glasses at various incident angles from 53° to 86°and used as photoanode in a dye-sensitized solar cell (DSSC). The as-deposited TiO2 films are comprised of helical nano-columns and assembled in an orderly manner with gaps or pores in between. The porous nanostructured films provide a synergetic effect of high surface area, effective route for electron transfer, tight interfaces, and enhanced light trapping, which are all beneficial for higher cell efficiency. The DSSCs incorporated with the GLAD films of 4 μm thick exhibited a high fill factor (FF) up to 0.77. The TiO2 film deposited at an incident angle of 73° provides the largest internal surface area and the largest amount of dye absorption and results in the highest light conversion efficiency of 2.78%. 相似文献
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Cheng P Lan T Yang H Wang W Wu H Deng C Dai X Guo S 《Journal of nanoscience and nanotechnology》2010,10(11):7698-7702
A high efficient dye-sensitized solar cell (DSC) was fabricated using nitrogen-doped nanocrystalline titania(TiO2) photoanode. X-ray photoelectron spectroscopy (XPS), diffuse reflectance spectroscopy (DRS), X-ray powder diffraction (XRD), zeta potentials, nitrogen adsorption-desorption and elemental analysis experiments were employed to characterize the nitrogen-doped nanocrystalline TiO2 photoanode. An obvious enhancement of the optical absorption in the range of 380-550 nm was observed for nitrogen-doped TiO2, which was attributed to both the substitutional N and the chemisorbed N2 molecules. A conversion efficiency of 9.04% was obtained on the DSC based on nitrogen-doped TiO2 photoanode annealed in a flow of NH3 at 550 degrees C, with an increase of 15.6% improvement in comparison with pure TiO2 (7.82%). The mechanism for the enhanced photovoltaic performance was discussed. 相似文献
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High-efficiency dye-sensitized solar cell based on a nitrogen-doped nanostructured titania electrode
A highly efficient dye-sensitized solar cell (DSC) was fabricated using a nanocrystalline nitrogen-doped titania electrode. The properties of the nitrogen-doped titania powder, film, and solar cell were investigated. The substitution of oxygen sites with nitrogen atoms in the titania structure was confirmed by X-ray photoemission spectroscopy (XPS). The UV-vis spectrum of the nitrogen-doped powder and film showed a visible light absorption in the wavelength range from 400 to 535 nm. An enhancement of the incident photon-to-current conversion efficiency (IPCE) in the range of 380-520 nm and 550-750 nm was observed. An 8% overall conversion efficiency has been achieved. The results of the stability test indicated that the solar cell fabricated by the nitrogen-doped titania exhibited great stability. 相似文献
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A novel tandem cell structure is proposed to improve photocurrent of dye-sensitized solar cells (DSCs). Front and back parallel photoelectrodes are placed face-to-face; a common Pt-mesh counter electrode with transmittance is inserted between the electrodes. The short-circuit current density (Jsc) for the tandem cell is equivalent to the sum of the Jsc for the front and back photoelectrodes. A model using light energy absorbed by the photoelectrode is used to evaluate appropriate TiO2 film thickness of the front photoelectrode. The Jsc for the tandem cell was improved to 13.3 mA/cm2 for a cell with a 7.8-μm-thick front photoelectrode. The novel tandem cell has a great potential to improve DSC photocurrent and performance. 相似文献
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Hydrogenated amorphous silicon film (a-Si:H) as top cell is introduced to dye-sensitized titanium dioxide nanocrystalline solar cell (DSSC) as bottom cell to assemble a hybrid tandem solar cell. The hybrid tandem solar cell fabricated with the thicknesses a-Si:H layer of 235 nm, ZnO/Pt interlayer of 100 nm and DSSC layer of 8.5 μm achieves a photo-to-electric energy conversion efficiency of 8.31%, a short circuit current density of 10.61 mA·cm− 2 and an open-circuit voltage of 1.45 V under a simulated solar light irradiation of 100 mW·cm− 2. 相似文献
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Yi-Yi Liu Xin-Yu Ye Hong Chen Yu-Feng Cao Bing-Xin Lei Wei Sun Zhen-Fan Sun 《Advanced Powder Technology》2019,30(3):572-580
The large-scale hierarchical anatase titania nanotube arrays on transparent conductive substrate are fabricated via in situ conversion from anatase titania nanowire arrays. The first-step hydrothermal reaction is the growth of ultra-long anatase titania nanowire arrays, and the second-step hydrothermal reaction is the conversion of titania nanowire arrays to titania nanotube arrays modified with a large number of nanosheets. The resultant hierarchical titania nanotube array film provides a large surface area and superior light scattering ability. Dye-sensitized solar cell based on the hierarchical titania nanotube array photoanode obtains a power conversion efficiency as high as 5.96% and shows a prominent increase compared to the pristine titania nanowire array photoanode (2.12%). In addition, the most interesting result is that an optimized efficiency of 7.54% is achieved for the cell based on the hierarchical titania nanotube array photoanode with titania sol modification. 相似文献