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首页> 外文期刊>RSC Advances >Transition metal complex redox shuttles for dye-sensitized solar cells
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Transition metal complex redox shuttles for dye-sensitized solar cells

机译：过渡金属配合物氧化还原梭，用于染料敏化太阳能电池

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摘要

An important link exists between the selected molecular structure of a sensitizer and the employed shuttle electrolyte to achieve high conversion efficiency in dye-sensitized solar cells (DSSCs). So far, the most commonly used redox mediator is iodide/triiodide (I-/I-3(-)), which has shown advantages such as desirable kinetic properties and high carrier collection efficiencies. However, it has several disadvantages including a low redox potential, corrosion toward metal materials and competitive blue light absorption. In this respect, the transition metal complex electrolytes represent valuable alternatives to replace traditional I-/I-3(-) couples, and can overcome the drawbacks of the I-/I-3(-) electrolyte. In recent years, the best efficiency of a DSSC was achieved with a porphyrin-sensitized solar cell with a transition metal complex-based redox electrolyte. In particular, in 2014, the Gratzel group published a record DSSC efficiency of 13% using a new porphyrin sensitizer with a Co-polypyridyl-based electrolyte. Here, we describe the engineering of the structure of a new transition metal complex electrolyte and the design of the molecular structure of a sensitizer at the same time. The main focus will be on the correlation between photophysical and electrochemical properties of the metal complex mediators and their DSSC performances. This review provides an in-depth investigation into exciting alternative electrolyte shuttles in DSSCs and the various advantages that they provide, including high conversion efficiency and non-corrosive properties.
机译：在敏化剂的选定分子结构与所采用的穿梭电解质之间存在重要的联系，以在染料敏化太阳能电池（DSSC）中实现高转换效率。迄今为止，最常用的氧化还原介体是碘化物/三碘化物（I- / I-3（-）），其显示出诸如所需的动力学性质和高的载流子收集效率等优点。然而，它具有几个缺点，包括低的氧化还原电势，对金属材料的腐蚀以及竞争性的蓝光吸收。在这方面，过渡金属络合物电解质代表了替代传统I- / I-3（-）电对的有价值的替代品，并且可以克服I- / I-3（-）电解质的缺点。近年来，用带有过渡金属配合物的氧化还原电解质的卟啉敏化太阳能电池实现了DSSC的最佳效率。尤其是在2014年，Gratzel研究小组发布了使用新型卟啉敏化剂和基于Co-polypyridyl的电解质的DSSC效率达到创纪录的13％。在这里，我们描述了一种新型过渡金属配合物电解质的结构工程以及敏化剂分子结构的设计。主要焦点将放在金属络合物介体的光物理和电化学性质与其DSSC性能之间的相关性。这篇评论深入研究了DSSC中令人兴奋的替代电解质梭以及它们提供的各种优势，包括高转化效率和非腐蚀性。

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