Terpyridyl Ruthenium Complexes Functionalized with Conjugated Heterocycles for Panchromatic Dye-Sensitized Solar Cells

Chia Yuan Chen, Yu Ming Feng, Tsung Yu Wu, Yu Chi Liu, Shih Yun Chen, Ting Yi Lin, Hui Hsu Gavin Tsai, Chun Guey Wu

研究成果: 雜誌貢獻期刊論文同行評審

摘要

Photosensitizer, a key component of dye-sensitized solar cells (DSCs), significantly affects the power conversion efficiency (PCE) of the devices. In this study, three terpyridyl (tpy) ruthenium complex dyes incorporating hexyl-substituted pyrrole (CYC-36), 4-methylthiazole (CYC-39), and thieno[3,2-b]pyrrole (CYC-41) were designed and their photovoltaic performance was examined. To the best of our knowledge, this study introduced these heterocyclic conjugated rings to functionalize the tpy-coordinated ruthenium complexes and discovered that 4-methylthiazole in the anchoring ligand of CYC-39 simultaneously enhanced the lighting-harvesting capability of the dye molecule, increased dye-loading in TiO2 photoanode, and reduced the charge recombination in the cells. The multifunction of 4-methylthiazole moiety is ascribed to not only the aromaticity and electron-withdrawing nature but also the formation of a moderate dihedral angle between the thiazole ring and the tpy core. Consequently, the DSC device sensitized with CYC-39 yields not only a panchromatic response up to 900 nm but also a good PCE of 9.0%.

原文???core.languages.en_GB???
頁(從 - 到)13461-13470
頁數10
期刊ACS Applied Energy Materials
4
發行號12
DOIs
出版狀態已出版 - 27 12月 2021

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