用于高效薄膜固态染料敏化太阳能电池中光捕获的强敏化剂的分子工程。
Molecular Engineering of Potent Sensitizers for Very Efficient Light Harvesting in Thin-Film Solid-State Dye-Sensitized Solar Cells.
机构信息
Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.
Laboratoire de Photoniques et Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne , Station 6, 1015 Lausanne, Switzerland.
出版信息
J Am Chem Soc. 2016 Aug 31;138(34):10742-5. doi: 10.1021/jacs.6b05281. Epub 2016 Aug 19.
Dye-sensitized solar cells (DSSCs) have shown significant potential for indoor and building-integrated photovoltaic applications. Herein we present three new D-A-π-A organic sensitizers, XY1, XY2, and XY3, that exhibit high molar extinction coefficients and a broad absorption range. Molecular modifications of these dyes, featuring a benzothiadiazole (BTZ) auxiliary acceptor, were achieved by introducing a thiophene heterocycle as well as by shifting the position of BTZ on the conjugated bridge. The ensuing high molar absorption coefficients enabled the fabrication of highly efficient thin-film solid-state DSSCs with only 1.3 μm mesoporous TiO2 layer. XY2 with a molar extinction coefficient of 6.66 × 10(4) M(-1) cm(-1) at 578 nm led to the best photovoltaic performance of 7.51%.
染料敏化太阳能电池（DSSCs）在室内和建筑集成光伏应用方面显示出了巨大的潜力。本文介绍了三种新型 D-A-π-A 有机敏化剂 XY1、XY2 和 XY3，它们具有高摩尔消光系数和宽吸收范围。通过在共轭桥引入噻吩杂环以及改变 BTZ 在共轭桥上的位置，对这些染料进行了分子修饰，使其成为辅助受体。由此产生的高摩尔消光系数使得仅使用 1.3μm 介孔 TiO2 层即可制备高效的薄膜固态 DSSCs。摩尔消光系数为 578nm 时为 6.66×10(4)M(-1)cm(-1)的 XY2 导致了最佳的光电性能，为 7.51%。
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