Metal-Free Sensitizers with a Perfluorohexyl Side Chain for Dye-Sensitized Solar Cells: Properties Alien to Alkyl Chains

Chia Jung Liang, C. H.Pavan Kumar, Chun Ting Li, Jiann T. Lin*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

New fluorene dyes containing a perfluorohexyl or an n-hexyl side chain in the conjugated spacer (thiophene) were synthesized for application in dye-sensitized solar cells. The perfluoro dyes more effectively suppress the charge recombination than their congeners containing a hexyl chain, which leads to a higher open-circuit voltage (VOC). The more efficient dark current suppression afforded by the perfluorohexyl-containing dyes was also confirmed by electrochemical impedance spectroscopy. A perfluoro-containing dye exhibited the best power conversion efficiency of the synthesized compounds, which was further improved to 6.73 % by the addition of chenodeoxycholic acid (10 mm) as a co-adsorbant. The hydrophobic perfluorohexyl-containing dyes are more resistant to leaching due to the presence of moisture, leading to higher temporal stability of the DSSCs.

原文英語
頁(從 - 到)819-828
頁數10
期刊Asian Journal of Organic Chemistry
7
發行號4
DOIs
出版狀態已發佈 - 2018 4月
對外發佈

ASJC Scopus subject areas

  • 有機化學

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