Heteroleptic ruthenium antenna-dye for high-voltage dye-sensitized solar cells

Jheng Ying Li, Chia Yuan Chen, Jian Ging Chen, Chun Jui Tan, Kun Mu Lee, Shi Jhang Wu, Yung Liang Tung, Hui Hsu Tsai, Kuo Chuan Ho, Chun Guey Wu

研究成果: 雜誌貢獻期刊論文同行評審

50 引文 斯高帕斯(Scopus)

摘要

A new ruthenium photosensitizer, coded CYC-B7, incorporating a bithienyl-carbazole antenna ligand was designed and prepared for improving the open-circuit voltage (Voc) of a dye-sensitized solar cell (DSC) device. This new sensitizer displays the low energy MLCT transition band centered at 551 nm with a high molar absorption coefficient of 2.19 × 104 M-1 cm-1. In addition, a simple approach to reduce the aggregation of bulky ruthenium dyes assembled onto the surface of TiO2 film is demonstrated. The cell based on this new heteroleptic ruthenium dye provides a high Voc of 788 mV and an overall conversion efficiency (η) of 8.96%. The functionality of carbazole in CYC-B7 resulting in the increases of the Voc value of the corresponding device is verified by comparing with the performance of the DSC sensitized with a structurally similar dye without carbazole.

原文???core.languages.en_GB???
頁(從 - 到)7158-7164
頁數7
期刊Journal of Materials Chemistry
20
發行號34
DOIs
出版狀態已出版 - 14 9月 2010

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