Dihydrophenanthrene-Based Metal-Free Dyes for Highly Efficient Cosensitized Solar Cells

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• 作者：Ryan Yeh-Yung Lin ; Yung-Sheng Yen ; Yung-Tse Cheng ; Chuan-Pei Lee ; Ying-Chan Hsu ; Hsien-Hsin Chou ; Chih-Yu Hsu ; Yung-Chung Chen ; Jiann T. Lin ; Kuo-Chuan Ho ; Chiitang Tsai
• 刊名：Organic Letters
• 出版年：2012
• 出版时间：July 20, 2012
• 年：2012
• 卷：14
• 期：14
• 页码：3612-3615
• 全文大小：239K
• 年卷期：v.14,no.14(July 20, 2012)
• ISSN：1523-7052

文摘

Metal-free dyes (BP-1 to BP-3) containing a 9,10-dihydrophenanthrene unit in the spacer have been synthesized. The dye with the highest cell efficiency, BP-2, was used in combination with SQ2 for cosensitized DSSCs. The cosensitized DSSC in which the ratio of BP-2 and SQ2 is 8:2 (v/v) has a record high efficiency of 8.14% among cosensitized systems using all metal-free sensitizers. Dye distribution along the TiO₂ film depth was analyzed by an Auger electron spectroscopy technique.