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Pore‐Filling of Spiro‐OMeTAD in Solid‐State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performance
Open accessAbstract
In this paper, the pore filling of spiro‐OMeTAD (2,2′,7,7′‐tetrakis‐(N,N‐di‐p‐methoxyphenylamine)9,9′‐spirobifluorene) in mesoporous TiO 2 films is quantified for the first time using XPS depth profiling and UV–Vis absorption spectroscopy. It is shown that spiro‐OMeTAD can penetrate the entire depth of the film, and its concentration is constant throughout the film. We determine that in a 2.5‐µm‐thick film, the volume of the pores is 60–65% filled. The pores become less filled when thicker films are used. Such filling fraction is much higher than the solution concentration because the excess solution on top of the film can act as a reservoir during the spin coating process. Lastly, we demonstrate that by using a lower spin coating speed and higher spiro‐OMeTAD solution concentration, we can increase the filling fraction and consequently the efficiency of the device.
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Cited by
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
Lee, M. M., Teuscher, J., Miyasaka, T., Murakami, T. N., & Snaith, H. J. (2012) · Science · doi:10.1126/science.1228604 · Cited by 10,687
Park, N.-G. (2013) · The Journal of Physical Chemistry Letters · doi:10.1021/jz400892a · Cited by 1,382
Deterioration mechanism of perovskite solar cells by operando observation of spin states
Watanabe, T., Yamanari, T., & Marumoto, K. (2020) · Communications Materials · doi:10.1038/s43246-020-00099-7 · Cited by 36
Metadata
- Authors
- Ding, I., Tétreault, N., Brillet, J., Hardin, B. E., Smith, E. H., Rosenthal, S. J., Sauvage, F., Grätzel, M., & McGehee, M. D.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2009-08-03
- Volume
- 19
- Issue
- 15
- Pages
- 2431-2436
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2132588261
- Cited by
- 268
- References
- 0
- FWCI
- 14.03
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Pore‐Filling of Spiro‐OMeTAD in Solid‐State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performance. https://app.cochat.ai/papers/10.1002/adfm.200900541
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- Ding, I., Tétreault, N., Brillet, J., Hardin, B. E., Smith, E. H., Rosenthal, S. J., Sauvage, F., Grätzel, M., & McGehee, M. D. (2009). Pore‐Filling of Spiro‐OMeTAD in Solid‐State Dye Sensitized Solar Cells: Quantification, Mechanism, and Consequences for Device Performance. Advanced Functional Materials. https://doi.org/10.1002/adfm.200900541
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