NIR-Absorbing Heptamethine Dyes with Tailor-Made Counterions for Application in Light to Energy Conversion
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- 作者：Anna C. Véron ; Hui Zhang ; Anthony Linden ; Frank Nüesch ; Jakob Heier ; Roland Hany ; Thomas Geiger
- 刊名：Organic Letters
- 出版年：2014
- 出版时间：February 21, 2014
- 年：2014
- 卷：16
- 期：4
- 页码：1044-1047
- 全文大小：301K
- ISSN：1523-7052
文摘
A method to exchange the counterion of cyanine dyes to 螖-TRISPHAT鈥?/sup> and PF6鈥?/sup> is presented. The influence of these counterions on the photophysical and electrochemical properties of the cyanine dye in solution is discussed, and tendencies in the solid packing are highlighted by X-ray crystal structures. The compounds were applied in semitransparent bilayer organic solar cells together with C60, and a power conversion efficiency of 2.2% was achieved while maintaining a high transparency level in the visible region of 66%.