WestCHEM, School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.
Dalton Trans. 2018 May 8;47(18):6549-6556. doi: 10.1039/c8dt00413g.
Dye-sensitized solar cells (DSSCs) continue to attract interest due to their lower cost production compared to silicon based solar cells and their improving power conversion efficiencies. Porphyrin-based sensitizers have become an important sub-class due to their strong absorption characteristics in the visible region, convenient modulation of properties through synthetic manipulation and class-leading power conversion efficiencies. In this article, we report the synthesis and characterization of two porphyrin-based dyes and their application as sensitizers in DSSCs. A thiophene and a furan moiety have been incorporated into the push-pull architecture as a π-bridge, allowing the systematic investigation of how these moieties influence the physical properties of the dyes and the performance of their resulting DSSCs. A significant difference in PCEs has been observed, with the furan containing dye (PorF, PCE = 4.5%) being more efficient than the thiophene-based analogue (PorT, PCE = 3.6%) in conjunction with the iodide/triiodide redox electrolyte.
染料敏化太阳能电池（DSSC）由于其生产成本低于基于硅的太阳能电池，并且其功率转换效率不断提高，因此继续引起人们的兴趣。基于卟啉的敏化剂因其在可见光区域具有较强的吸收特性、通过合成操作方便地调节性质以及领先的功率转换效率而成为一个重要的子类。在本文中，我们报告了两种基于卟啉的染料的合成和表征及其在 DSSC 中作为敏化剂的应用。噻吩和呋喃部分已被掺入推挽架构中作为π桥，允许系统地研究这些部分如何影响染料的物理性质及其所得 DSSC 的性能。已经观察到光电转换效率（PCE）的显著差异，含有呋喃的染料（PorF，PCE=4.5%）与碘/三碘化物氧化还原电解质结合时比基于噻吩的类似物（PorT，PCE=3.6%）更有效。
