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首页> 外文期刊>RSC Advances >Development of selective, ultra-fast multiple co-sensitization to control dye loading in dye-sensitized solar cells
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Development of selective, ultra-fast multiple co-sensitization to control dye loading in dye-sensitized solar cells

机译：在染料敏化太阳能电池中控制染料载荷的选择性，超快速多重敏化的发展

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Enhancing the spectral response of dye-sensitized solar cells (DSC) is essential to increasing device efficiency and a key approach to achieve this is co-sensitization ( i.e. the use of multiple dyes to absorb light from different parts of the solar spectrum). However, precise control of dye loading within DSC mesoporous metal oxide photo-anodes is non-trivial especially for very rapid processing (minutes). This is further complicated by dyes having very different partition ( K _(d) ) and molar extinction ( ε ) coefficients which strongly influence dye uptake and spectral response, respectively. Here, we present a highly versatile, ultra-fast ( ca. 5 min) desorption and re-dyeing method for dye-sensitized solar cells which can be used to precisely control dye loading in photo-electrode films. This method has been successfully applied to re-dye, partially desorb and re-dye and selectively desorb and re-dye photo-electrodes using examples of a Ru-bipy dye (N719) and also organic dyes (SQ1 and D149) giving η up to 8.1% for a device containing the organic dye D149 and re-dyed with the Ru dye N719. The paper also illustrates how this method can be used to rapidly screen large numbers of dyes (and/or dye combinations) and also illustrates how it can also be used to selectively study dye loading.
机译：增强染料敏化太阳能电池（DSC）的光谱响应对于提高器件效率和实现这一的关键方法是必不可少的（即，使用多种染料来吸收来自太阳光谱的不同部分的光）。然而，在DSC中孔金属氧化物光阳极内精确控制DSC中孔金属氧化物光阳极是非差异的，特别是对于非常快速的加工（分钟）。通过具有非常不同的分区的染料（K _（d））和摩尔消光（ε）系数，分别强烈影响染料吸收和光谱响应，这进一步复杂。在这里，我们提出了一种高度通用的超快速（约5分钟）解吸和重新染色的染料敏化太阳能电池的再染色方法，其可用于精确地控制光电电极膜中的染料载荷。该方法已成功地应用于重新染料，部分解吸和再染料，并使用Ru-Bipy染料（N719）的实例选择性地解吸和重新染料光电极（N719），也可有机染料（SQ1和D149）给出η上含有有机染料D149的装置的8.1％并用Ru染料N719重新染色。本文还说明了该方法如何用于快速筛选大量染料（和/或染料组合），并且还示出了如何用来选择性地研究染料载荷。

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