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Phase Diagram of P3HT/PCBM Blends and Its Implication for the Stability of Morphology
Abstract
In this work, the phase diagram of poly(3-hexyl thiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) blends is measured by means of standard and modulated temperature differential scanning calorimetry. Blends were made by solvent-casting from chlorobenzene, as blends cast from toluene or 1,2-dichlorobenzene prove to retain effects of phase segregation during casting, hindering the determination of the phase diagram. The film morphology of P3HT/PCBM blends cast from chlorobenzene results from a dual crystallization behavior, in which the crystallization of each component is hindered by the other component. A single glass transition is observed for all compositions. The glass transition temperature (Tg) increases with increasing concentration of PCBM: from 12.1 degrees C for pure P3HT to 131.2 degrees C for pure PCBM. The observed Tg defines the operating window for the thermal annealing and explains the long-term instability of both the morphology and the photovoltaic performance of the P3HT/PCBM solar cells.
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Cited by
Dang, M. T., Hirsch, L., Wantz, G., & Wuest, J. D. (2013) · Chemical Reviews · doi:10.1021/cr300005u · Cited by 587
Morphology characterization in organic and hybrid solar cells
Chen, W., Nikiforov, M. P., & Darling, S. B. (2012) · Energy & Environmental Science · doi:10.1039/c2ee22056c · Cited by 400
Effect of Selective Contacts on the Thermal Stability of Perovskite Solar Cells
Zhao, X., Kim, H.-S., Seo, J.-Y., & Park, N.-G. (2017) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.6b15673 · Cited by 265
Improved Thermal Stability of Polymer Solar Cells by Incorporating Porphyrins
Wang, S., Qu, Y., Li, S., Ye, F., Chen, Z., & Yang, X. (2015) · Advanced Functional Materials · doi:10.1002/adfm.201403018 · Cited by 48
Metadata
- Authors
- Zhao, J., Swinnen, A., Van Assche, G., Manca, J., Vanderzande, D., & Mele, B. V.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-01-21
- Volume
- 113
- Issue
- 6
- Pages
- 1587-1591
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2160916688
- Cited by
- 350
- References
- 0
- FWCI
- 26.14
- Type
- journal article
- Language
- en
- Open access
- closed
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