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Expanding the spectral response of a dye-sensitized solar cell by applying a selective positioning method

机译：通过选择定位方法扩大染料敏化太阳能电池的光谱响应

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摘要

We have developed a facile method to position different dyes (N719 and N749) sequentially in a mesoporous TiO_2 layer through selective desorption and adsorption processes. From the selective removal of the only upper part of the first adsorbed dye, double-layered dye-sensitized solar cells have been successfully achieved without any damage to the dye. From the incident photon-to-current conversion efficiency (IPCE) measurement, the multi-layered dye-sensitized solar cell (MDSSC) was found to exhibit an expanded spectral response for the solar spectrum while maintaining the maximum IPCE value of each single-layered cell. The highest photocurrent density, 19.3 mA cm~(-2), was obtained from the MDSSC utilizing an N719/N749 bi-layered mesoporous TiO_2 film. The power conversion efficiency of 9.8% was achieved from the MDSSC, which is higher than that of single N719-or N749-based cells and cocktail-dyed (a mixture of N719 and N749) cells.
机译：我们已经开发出一种简便的方法，通过选择性解吸和吸附过程，将不同的染料（N719和N749）顺序定位在中孔TiO_2层中。通过选择性地去除第一吸附染料的仅上部，已经成功实现了双层染料敏化太阳能电池，而没有对染料造成任何损害。从入射光子到电流的转换效率（IPCE）测量，发现多层染料敏化太阳能电池（MDSSC）在保持每个单层最大IPCE值的同时，对太阳光谱表现出扩展的光谱响应细胞。利用N719 / N749双层中孔TiO_2薄膜从MDSSC获得了最高的光电流密度19.3 mA cm〜（-2）。 MDSSC的功率转换效率为9.8％，高于单个基于N719或N749的细胞以及经鸡尾酒染色的（N719和N749的混合物）细胞的功率转换效率。

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