共查询到19条相似文献,搜索用时 93 毫秒
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在TiO2胶体中加入3种表面活性剂松油醇、聚丙烯酸甲酯、TX-100和乙基纤维素增稠剂组成浆液,利用丝网印刷技术制备了染料敏化纳晶多孔TiO2薄膜电极.在松油醇、聚丙烯酸甲酯、TX-100和乙基纤维素与TiO2在合适的质量比率下制备的纳晶TiO2电极的光电转换效率可达6.9%;经过TiC14修饰后的纳晶TiO2薄膜电极... 相似文献
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敏化TiO2纳米晶多孔膜电极的制备与表征 总被引:10,自引:1,他引:9
研究了染料敏化TiO2纳米晶多孔薄膜电极的制备、表征及其光电转换性质,采用溶胶-凝胶法液压涂层制备了TiO2纳米晶多孔薄膜,在无水乙醇中利用薄膜吸附染料2,2′-联吡啶-4,4′-二甲酸合硫氰酸钌进行敏化处理,并利用XPS、AFM、XRD、SEM杉可见-紫外分光光度仪对敏化TiO2纳米晶多孔薄膜进行了表征分析。研究结果表明:薄膜中纳米粒子晶型主要为锐钛矿,粒径在20-30nm,多孔薄膜的孔径在50-200nm;染料敏化多孔薄膜表面吸附了一个单分子层的染料分子,敏化薄膜对可见光有很强的吸收作用,用此薄膜制作的太阳能电池具有较高的光电转化效率,电池效率达到2%,这种薄膜电极改进后可用于制作敏化太阳能电池的光阳极。 相似文献
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采用丝网印刷法制备了SrCO3/TiO2复合薄膜电极;组装电池,研究了复合电极的光电性能。结果表明:敏化SrCO3/TiO2复合薄膜电极太阳能电池的短路电流密度、开路电压和填充因子比敏化TiO2电极电池均有增加,总的光电转换效率从3.01%提高到了3.53%,增加了17.3%。另外紫外光谱表明,SrCO3/TiO2复合薄膜电极吸附更多的染料。电化学阻抗谱研究表明,SrCO3/TiO2复合薄膜电极相对于空白TiO2电极有更小的阻抗,有利于电子在薄膜中的传输,提高了太阳能电池的性能。 相似文献
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阐述了对应用在染料敏化太阳能电池中作为电极的TiO2薄膜的要求,对如何能制备出具有较好电池性能的TiO2薄膜电极的方法进行了综述,分析了各种方法的优劣,对未来染料敏化太阳能电池中TiO2薄膜的制备方法提出了建议。 相似文献
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Modified TiO2 films have been prepared by combining commercial titania powders (Degussa P25) with sol-gel made by titanium chloride (Ti-sol). The result shows that clusters are formed by nanoparticles and large pores can be seen on the surface of the TiO2 films. The short circuit photocurrent density and photoelectric conversion efficiency of the solar cells are obviously enhanced compared with those without modification. The relationship between the photoelectric conversion efficiency and the amount of Ti-sol was investigated. With the addition of 30 wt% Ti-sol, the photoelectric conversion efficiency as high as 9.75% is achieved, increasing by 28.3% compared with the solar cells without modification. 相似文献
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FeS2/TiO2复合薄膜光电性能 总被引:1,自引:0,他引:1
采用溶液浸渍法在ITO导电玻璃表面的多孔TiO2薄膜上沉积了FeS2薄膜.使用Fe2O3粉末保护裸露在外的ITO导电膜在硫气氛中热处理后,制得了FeS2/TiO2复合薄膜.应用B531/H数显测厚指示表、数字式四探针测试仪、XJCM-8太阳电池测试仪等研究了FeS2/TiO2复合薄膜的厚度、ITO导电玻璃的电阻率以及FeS2/TiO2复合薄膜的光电性能.结果表明:此方法制得的FeS2/TiO2复合薄膜具有良好的光电性能;且ITO导电膜的电阻率变化较小.因而适宜制备色素增感太阳能电池(DSSC). 相似文献
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Rutile TiO2 nanowire array films with multi-walled carbon nanotube(MWCNT) inclusion perpendicularly grown on fluorine-doped tin oxide(FTO) substrate were prepared by a facile hydrothermal method.The absorption edges of the TiO2 nanowire array films are blue-shifted with increasing MWCNT content.The resistance of the TiO2 nanowire array film is decreased by MWCNT inclusion.The optimum TiO2 /MWCNT molar ratio in the feedstock is 1:0.1.For the TiO2 nanowire array film with MWCNT inclusion served as electrode in dye-sensitized solar cell(DSSC),an overall 194% increase of photoelectric conversion efficiency has been achieved. 相似文献
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Kao MJ Chang H Kuo CG Huang KD Chen YL 《Journal of nanoscience and nanotechnology》2011,11(8):7459-7462
This study deals with the fabrication of three different morphologies of TiO2 nanoparticles to fabricate two-layer photoelectrode thin film for dye-sensitized solar cells (DSSC). The four different TiO2 morphologies are titania nanotubes (Tnt), TiO2 nanoparticles (H220), TiO2 nanoparticle (SP) and commercial DP-25 nanoparticles (P-25). To prepare the thin films of the photoelectrodes, the first layer is coated by H220 TiO2 nanoparticles, and the second is coated by 3 kinds of materials optimally proportionally mixed - P25, SP and Tnt. The photoelectric conversion efficiency of DSSCs with photoelectrodes fabricated using H220 reached 6.31%. Finally, the TiO2 nanaomaterials with four different morphologies were used to prepare a two layer photoelectrode with the structure of H220/P25-Tnt-SP which was combined with a Pt counter electrode to assemble DSSCs. These DSSCs had photoelectric conversion efficiencies of as high as 7.47%. 相似文献
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采用丝网印刷的方式制备了染料敏化太阳能电池的TiO2薄膜光阳极、TiO2-ZnO复合薄膜光阳极以及TiO2/ZnO双层薄膜光阳极,研究了ZnO对TiO2薄膜光阳极的调制改性作用。研究结果表明分别以醋酸锌和ZnO直接掺杂制备的TiO2-ZnO复合薄膜光阳极同未掺杂的TiO2薄膜光阳极相比,以醋酸锌为原料制备的复合薄膜光阳极使电池转换效率提高了1倍,而由于微米量级的ZnO的粒径大,用其作原料制得的复合薄膜光阳极反而使电池的转换效率有所降低。以醋酸锌为原料制备的TiO2/ZnO双层薄膜光阳极同TiO2薄膜光阳极相比,电池转换效率提高了13倍,通过性能优化后电池的转换效率达到4.7%。 相似文献
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Lee JG Cheon JH Yang HS Lee do K Kim JH 《Journal of nanoscience and nanotechnology》2012,12(7):6026-6030
The TiO2 thin film layers were introduced with the spin-coating method between FTO electrode and TiO2 photoanode in dye sensitized solar cell (DSSC) to prevent electron back migration from the FTO electrode to electrolyte. The DSSC containg different thickness of TiO2 thin film (10-30, 40-60 and 120-150 nm) were prepared and photovoltaic performances were analysed with /-Vcurves and electrochemical impedance spectroscopy. The maximum cell performance was observed in DSSC with 10-30 nm of TiO2 thin film thickness (11.92 mA/cm2, 0.74 V, 64%, and 5.62%) to compare with that of pristine DSSC (11.09 mA/cm2, 0.65 V, 62%, and 4.43%). The variation of photoelectric conversion efficiency of the DSSCs with different TiO2 thin film thickness was discussed with the analysis of crystallographic and microstructural properties of TiO2 thin films. 相似文献