Abstract
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 × 104 M–1 cm–1 at 578 nm led to the best photovoltaic performance of 7.51%.
Original language | English |
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Pages (from-to) | 10742–10745 |
Number of pages | 4 |
Journal | Journal of the American Chemical Society |
Volume | 138 |
Issue number | 34 |
Early online date | 4 Aug 2016 |
DOIs | |
Publication status | Published - 31 Aug 2016 |
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Neil Robertson
- School of Chemistry - Personal Chair of Molecular Materials
- EaStCHEM
Person: Academic: Research Active