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首页> 外文期刊>RSC Advances >Composite electrode of TiO2 particles with different crystal phases and morphology to significantly improve the performance of dye-sensitized solar cells
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Composite electrode of TiO2 particles with different crystal phases and morphology to significantly improve the performance of dye-sensitized solar cells

机译：具有不同晶相和形态的TiO2颗粒复合电极可显着提高染料敏化太阳能电池的性能

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摘要

A novel composite electrode containing brookite TiO2 quasi nanocubes and anatase TiO2 sea urchin-like microspheres is fabricated for improving the dye-sensitized solar cell's performance. The brookite nanocubes have a mean size of similar to 50 nm, and the anatase microspheres with similar to 3 mu m diameter display hierarchical structures composed of secondary TiO2 nanoribbons and nanoparticles. An optimal efficiency of 7.09% is obtained from the solar cell fabricated with a composite TiO2 electrode containing 30 wt% nanocubes and 70 wt% microspheres, with 81% or 30% improvement in the efficiency as compared to the single nanocube or microsphere film-based cell. Those brookite nanocubes in the microsphere film can fill the interspaces of the hierarchical microspheres, which can not only enhance the dye-loading, but also reduce the charge recombination. All these lead to a higher voltage and current, leading to the improved performance of the anatase TiO2 film-based solar cell.
机译：为了提高染料敏化太阳能电池的性能，制备了一种新的复合电极，该复合电极包含板钛矿型TiO2准纳米立方体和锐钛矿型TiO2海胆类微球。板钛矿纳米立方体的平均大小接近50 nm，直径接近3μm的锐钛矿微球显示出由二级TiO2纳米带和纳米颗粒组成的分层结构。由包含30重量％纳米立方体和70重量％微球的复合TiO2电极制造的太阳能电池可获得7.09％的最佳效率，与基于单个纳米立方体或微球薄膜的效率相比，效率提高了81％或30％细胞。微球薄膜中的那些板钛矿纳米晶可以填充分层微球的空隙，这不仅可以增加染料的负载量，而且可以减少电荷的重组。所有这些导致更高的电压和电流，从而导致基于锐钛矿型TiO2薄膜的太阳能电池的性能得到改善。

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