Emergence of Copper(I/II) Complexes as Third-Generation Redox Shuttles for Dye-Sensitized Solar Cells
Emergence of Copper(I/II) Complexes as Third-Generation Redox Shuttles for Dye-Sensitized Solar Cells
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DOI：
10.1021/acsenergylett.2c00716
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发表时间：
2022-05
影响因子：
22
通讯作者：
T. Higashino;H. Imahori
中科院分区：
文献类型：
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作者：
T. Higashino;H. Imahori
氧化还原穿梭对染料敏化太阳能电池（DSSC）的光伏性能起着至关重要的作用。传统的碘化物/三碘化物（I-/I3-）氧化还原梭已经在第一代中被广泛使用，但是其具有固有的缺点，例如有限的开路电压（VOC）。另一方面，具有多吡啶基配体的钴（II/III）络合物已被确立为第二代氧化还原梭，并且已实现高达13%的功率转换效率（η）。自2016年以来，铜（I/II）络合物由于其更正的氧化还原电位而作为第三代氧化还原梭出现。铜基DSSC的η值在早期阶段较低，但到目前为止，由于调节铜络合物和敏化剂的分子结构，其η值已高达13%。在这个角度来看，铜基DSSC的最新发展和前景突出，超过15%的功率转换效率。
Redox shuttles play a crucial role in the photovoltaic performance of dye-sensitized solar cells (DSSCs). A traditional iodide/triiodide (I–/I3–) redox shuttle has been widely utilized in the first generation, but it suffers from intrinsic disadvantages such as a limited open-circuit voltage (VOC). On the other hand, cobalt(II/III) complexes with polypyridyl ligands have been established as second-generation redox shuttles and have achieved a power conversion efficiency (η) of up to 13%. Since 2016, copper(I/II) complexes have appeared as third-generation redox shuttles owing to their more positive redox potentials. The η values of the copper-based DSSCs were low in the early stages, but to date, they have reached up to 13% as a result of modulating the molecular structures of the copper complexes and sensitizers. In this Perspective, recent developments in and prospects for copper-based DSSCs are highlighted, toward over 15% power conversion efficiency.