Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 138, Issue 34, Pages 10742-10745Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jacs.6b05281
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Funding
- NSFC for Creative Research Groups [21421004]
- NSFC/China [21372082, 21572062, 91233207]
- Programme of Introducing Talents of Discipline to Universities [B16017]
- China Scholarship Council (CSC)
- Siemens AG
- Swiss National Science Foundation
- glass2energy sa (g2e), Villaz-St-Pierre, Switzerland [CTI 17622.1 PFNM-NM]
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Dye-sensitized solar cells (DSSCs) have shown significant potential for indoor arid building integrated photovoltaic applications. Herein we present three new D-A-pi-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 mu m mesoporous TiO2 layer. XY2 with a molar extinction coefficient of 6.66 X 10(4) M-1 cm(-1) at 578 nm led to the best photovoltaic performance of 7.51%.
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