The Hagfeldt Donor and Use of Next-Generation Bulky Donor Designs in Dye-Sensitized Solar Cells.,ChemSusChem

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The Hagfeldt Donor and Use of Next-Generation Bulky Donor Designs in Dye-Sensitized Solar Cells.
ChemSusChem ( IF 7.5 ) Pub Date : 2020-02-20 , DOI: 10.1002/cssc.202000409
Alexandra Baumann ₁ , Christine Curiac ₁ , Jared H Delcamp ₁

Affiliation

"The Hagfeldt donor" is a bulky triarylamine building block with four alkyl chains in a 3-dimensional arrangement that is used with organic dyes in dye-sensitized solar cells (DSCs) in over 140 publications. Many of the highest performing DSC devices in literature make use of this group due to exceptional TiO2 surface protection properties, which slows recombination of electrons in TiO2 with the electrolyte. Importantly, record-setting cobalt and copper redox shuttle-based DSCs require exceptional surface protection to slow a facile recombination of electrons to these positively charged redox shuttles. Several syntheses have emerged for the Hagfeldt donor due to the need for iterative aryl-halide cross- coupling reactions complicating a straightforward route. Six synthetic strategies found in literature are described along with the challenges of each route. A recent method that has been put forward in the literature as a scalable, regioisomerically pure route is highlighted.

中文翻译：

Hagfeldt供体和染料敏化太阳能电池中下一代大体积供体设计的使用。

“ Hagfeldt供体”是一种庞大的三芳基胺结构单元，具有3维排列的四个烷基链，可与140多个出版物中的染料敏化太阳能电池（DSC）中的有机染料一起使用。文献中许多性能最高的DSC器件都使用该组，这是由于其具有出色的TiO2表面保护性能，从而减慢了TiO2中的电子与电解质的重新结合。重要的是，基于创纪录的钴和铜氧化还原梭的DSC需要出色的表面保护，以减缓电子向这些带正电的氧化还原梭的便捷重组。由于需要反复进行的芳基-卤化物交叉偶联反应，使直接路线复杂化，Hagfeldt供体已经出现了几种合成方法。描述了文献中发现的六种综合策略以及每种途径的挑战。强调了文献中作为可扩展的区域异构纯途径的最近方法。

更新日期：2020-02-20

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