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首页> 外文期刊>International Journal of Electrochemical Science >The Effect of Drying and Thickness of TiO2 Electrodes on the Photovoltaic Performance of Dye-Sensitized Solar Cells
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The Effect of Drying and Thickness of TiO2 Electrodes on the Photovoltaic Performance of Dye-Sensitized Solar Cells

机译：TiO 2 电极的干燥和厚度对染料敏化太阳能电池光伏性能的影响

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摘要

Dye-sensitized solar cells (DSSC) are based on the absorption of photons by dye, and the transfer ofthese to TiO2 electrodes. The microstructure and defects of TiO2 electrodes are vital for the fabricationof high efficiency dye-sensitized solar cells. These properties strongly relate to the TiO2 electrodemethod of fabrication and its parameters. In this research, the effect of drying and thickness of thenanocrystallineTiO2 electrodes were investigated. Nanocrystalline TiO2 thin films of differentthicknesses were deposited on FTO-coated glass substrates using a tape casting method. Then, theseelectrodes were dried at different temperatures (130C and 70C) at different heating rate.Subsequently, the electrodes were immersed into a dye solution. After dyeing, the cells were assembledusing the dye-covered TiO2 electrodes and platinum-coated FTO and iodine electrolytes. Thesesamples were characterized by SEM, TGA, FTIR, OM and the cell performance then measured by a-2 solar light simulator at an intensity of 1000 W.m . Drying the electrodes at different temperature anddifferent heating rate showed that the solar cells with a TiO2 electrode dried at 130C, and at lowerheating rate gave a higher short-circuit current density and open circuit voltage, with a higher overallconversion efficiency of 5.1%. The effect of the thickness of TiO2 films on the parameters of DSSCswas also investigated. Results showed that by increasing the thickness of the TiO2 films, absorption ofthe N719 dye through the TiO2 layers increased to a more optimum level, so that power conversionefficiency () of 7.51 % was obtained.
机译：染料敏化太阳能电池（DSSC）基于染料吸收光子并将其转移到TiO2电极上。 TiO2电极的微观结构和缺陷对于制造高效染料敏化太阳能电池至关重要。这些性质与TiO2电极的制造方法及其参数密切相关。在这项研究中，研究了干燥和纳米TiO2电极厚度的影响。使用流延法将不同厚度的纳米TiO2纳米薄膜沉积在FTO涂层的玻璃基板上。然后，将这些电极在不同的温度（130°C和70°C）下以不同的加热速率干燥，然后将电极浸入染料溶液中。染色后，使用覆盖染料的TiO2电极以及铂涂层的FTO和碘电解质组装电池。这些样品通过SEM，TGA，FTIR，OM进行表征，然后通过a-2太阳光模拟器以1000W.m的强度测量电池性能。在不同的温度和不同的加热速率下干燥电极表明，带有TiO2电极的太阳能电池在130℃下干燥，并且在较低的加热速率下具有更高的短路电流密度和开路电压，更高的整体转换效率为5.1％。还研究了TiO2膜厚度对DSSCs参数的影响。结果表明，通过增加TiO2膜的厚度，N719染料通过TiO2层的吸收增加到了一个最佳水平，从而获得了7.51％的功率转换效率（）。

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