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首页> 外文期刊>Journal of industrial and engineering chemistry >Photovoltaic efficiency on dye-sensitized solar cells (DSSC) assembled using Ga-incorporated TiO2 materials
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Photovoltaic efficiency on dye-sensitized solar cells (DSSC) assembled using Ga-incorporated TiO2 materials

机译：使用掺Ga的TiO2材料组装的染料敏化太阳能电池（DSSC）的光伏效率

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摘要

This study examined the photoelectric conversion efficiency of DSSC (dye-sensitized solar cell) when nanometer sized Ga (0.25, 0.50, and 1.00mol%)-TiO2 prepared using a hydrothermal method was employed as a working electrode material. The particle sizes observed in the transmission electron microscopy images were <20 nm in all samples. However, with increasing Ga concentration, the size increased and the shapes transformed to a stick form. The absorption band was slightly blue-shifted upon the incorporation of gallium ions, but the intensity of the photoluminescence (PL) curves of the Ga-incorporated TiO2 was significantly smaller, with the smallest case being the 0.50 mol% Ga-TiO2, which was related to recombination between the excited electrons and holes. When Ga-TiO2 was applied in DSSC, the energy conversion efficiency was enhanced considerably compared to that using pure TiO2; it was approximately 4.57% with the N3 dye under 100 mW/cm~2 of simulated sunlight. These results are in agreement with an electrostatic force microscopy (EFM) study showing that the electrons were transferred rapidly to the surface of Ga-TiO2 film, compared with that on a pure TiO2 film.
机译：本研究研究了使用水热法制备的纳米级Ga（0.25、0.50和1.00mol％）-TiO2作为工作电极材料时，DSSC（染料敏化太阳能电池）的光电转换效率。在所有样品中，在透射电子显微镜图像中观察到的粒径均＜20nm。然而，随着Ga浓度的增加，尺寸增加并且形状转变为棒状。掺入镓离子时吸收带略微蓝移，但掺有Ga的TiO2的光致发光（PL）曲线的强度明显较小，最小的情况是0.50 mol％Ga-TiO2，这是与激发电子和空穴之间的复合有关。当将Ga-TiO2应用于DSSC时，与使用纯TiO2相比，能量转换效率得到了显着提高。在100 mW / cm〜2的模拟阳光下，N3染料约为4.57％。这些结果与静电力显微镜（EFM）的研究结果相符，该研究表明，与纯TiO2薄膜相比，电子被迅速转移到Ga-TiO2薄膜的表面。

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