Organic Dyes Incorporating the Benzo[1,2-b:4,5-b鈥瞉dithiophene Moiety for Efficient Dye-Sensitized Solar Cells

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• 作者：Xiaoli Hao ; Mao Liang ; Xiaobing Cheng ; Xiaoqing Pian ; Zhe Sun ; Song Xue
• 刊名：Organic Letters
• 出版年：2011
• 出版时间：October 21, 2011
• 年：2011
• 卷：13
• 期：20
• 页码：5424-5427
• 全文大小：746K
• 年卷期：v.13,no.20(October 21, 2011)
• ISSN：1523-7052

文摘

A new class of organic sensitizers incorporating a benzo[1,2-b:4,5-b鈥瞉dithiophene (BDT) unit as conjugated spacer has been synthesized and successfully used for dye-sensitized solar cells (DSSCs). The length of the 蟺-conjugated spacers has a strong impact on electro-optical properties of these dyes, leading to the conversion efficiencies ranging from 4.17 to 5.68% under AM 1.5 G irradiation. This result indicates that the BDT unit is a promising candidate in organic sensitizers.