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A Quantitative Study of PCBM Diffusion during Annealing of P3HT:PCBM Blend Films
Abstract
Scanning transmission X-ray microscopy has been used to quantitatively map the composition of P3HT:PCBM blend films in the vicinity of PCBM crystals formed during annealing at 140 °C. The observed PCBM concentration profiles around these crystals have been fitted to Fick’s second law of diffusion and the diffusion constant found to be 2.5 × 10 −14 m 2 s −1 . The PCBM concentration at the crystal boundary was found to be 19% (v/v) and is interpreted, together with the annealing temperature of 140 °C, as a point on the bimodal line of the composition−temperature phase diagram. The diffusion of PCBM through P3HT is observed to be bulk-dominated, in contrast to the surface/interface-dominated diffusion observed in MDMO-PPV:PCBM blend films by Yang et al. (1, 2)
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Cited by
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Huang, Y., Kramer, E. J., Heeger, A. J., & Bazan, G. C. (2014) · Chemical Reviews · doi:10.1021/cr400353v · Cited by 1,249
On the morphology of polymer‐based photovoltaics
Liu, F., Gu, Y., Jung, J. W., Jo, W. H., & Russell, T. P. (2012) · Journal of Polymer Science Part B: Polymer Physics · doi:10.1002/polb.23063 · Cited by 323
Yin, W., & Dadmun, M. (2011) · ACS Nano · doi:10.1021/nn200744q · Cited by 314
Probing Organic Thin Films by Coherent X-ray Imaging and X-ray Scattering
Patil, N., Narayanan, T., Michels, L., Skjønsfjell, E. T. B., Guizar-Sicairos, M., Van den Brande, N., Claessens, R., Van Mele, B., & Breiby, D. W. (2019) · ACS Applied Polymer Materials · doi:10.1021/acsapm.9b00324 · Cited by 6
Metadata
- Authors
- Watts, B., Belcher, W. J., Thomsen, L., Ade, H., & Dastoor, P. C.
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-11-10
- Volume
- 42
- Issue
- 21
- Pages
- 8392-8397
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W2034889866
- Cited by
- 255
- References
- 0
- FWCI
- 18.74
- Type
- journal article
- Language
- en
- Open access
- closed
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- Watts, B., Belcher, W. J., Thomsen, L., Ade, H., & Dastoor, P. C. (2009). A Quantitative Study of PCBM Diffusion during Annealing of P3HT:PCBM Blend Films. Macromolecules. https://doi.org/10.1021/ma901444u
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