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A combination of fluorine-induced effect and co-sensitization for highly efficient and stable dye-sensitized solar cells.
- Source :
- Journal of Chemical Physics; 8/28/2023, Vol. 159 Issue 8, p1-12, 12p
- Publication Year :
- 2023
-
Abstract
- Developing dyes with high open-circuit photovoltage (V<subscript>oc</subscript>) is a vital strategy to improve the power conversion efficiency (PCE) of co-sensitized solar cells (co-DSSCs). Herein, three organic fluorine-containing dyes [YY-ThP(3F), YY-ThP(2F), and YY-ThP(26F)] are designed and synthesized for investigating the fluorine-induced effect on photophysical and photovoltaic performances. Consequently, this effect can significantly broaden the UV–vis absorption spectra of dyes but fail to improve the light-harvesting capability of DSSCs. Strikingly, YY-ThP(3F), featuring 3-position fluorine substitution to cyanoacrylic acid, yields a relatively high V<subscript>oc</subscript> compared to the corresponding fluorine-free dye (YY-ThP). Furthermore, the co-sensitization of YY-ThP+YY-ThP(3F) achieves a remarkably high PCE and long-term stability. This work implies that the combination of judicious molecular engineering and co-sensitization is a promising strategy for highly efficient and stable DSSCs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219606
- Volume :
- 159
- Issue :
- 8
- Database :
- Complementary Index
- Journal :
- Journal of Chemical Physics
- Publication Type :
- Academic Journal
- Accession number :
- 171316937
- Full Text :
- https://doi.org/10.1063/5.0158154