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The Effect of H‐ and J‐Aggregation on the Photophysical and Photovoltaic Properties of Small Thiophene–Pyridine–DPP Molecules for Bulk‐Heterojunction Solar Cells
Open accessAbstract
The performance of organic semiconductors in optoelectronic devices depends on the functional properties of the individual molecules and their mutual orientations when they are in the solid state. The effect of H‐ and J‐aggregation on the photophysical properties and photovoltaic behavior of four electronically identical but structurally different thiophene–pyridine–diketopyrrolopyrrole molecules is studied. By introducing and changing the position of two hexyl side chains on the two peripheral thiophene units of these molecules, their aggregation in thin films between H‐type and J‐type is effectively tuned, as evidenced from the characteristics of optical absorption, fluorescence, and excited state lifetime. The two derivatives that assemble into J‐type aggregates exhibit a significantly enhanced photovoltaic performance, up to an order of magnitude, compared to the two molecules that form H‐type aggregates. The reasons for this remarkably different behavior are discussed.
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Feng, X., Wang, X., Redshaw, C., & Tang, B. Z. (2023) · Chemical Society Reviews · doi:10.1039/d3cs00251a · Cited by 382
Molecular phosphorescence in polymer matrix with reversible sensitivity
Wu, H., Gu, L., Baryshnikov, G. V., Wang, H., Minaev, B. F., Ågren, H., & Zhao, Y. (2020) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.0c04859 · Cited by 107
Liess, A., Arjona‐Esteban, A., Kudzus, A., Albert, J., Krause, A., Lv, A., Stolte, M., Meerholz, K., & Würthner, F. (2019) · Advanced Functional Materials · doi:10.1002/adfm.201805058 · Cited by 93
Low Energy Loss of 0.57 eV and High Efficiency of 8.80% in Porphyrin-Based BHJ Solar Cells
Vartanian, M., Singhal, R., de la Cruz, P., Biswas, S., Sharma, G. D., & Langa, F. (2018) · ACS Applied Energy Materials · doi:10.1021/acsaem.8b00024 · Cited by 19
Metadata
- Authors
- Más‐Montoya, M., & Janssen, R. A. J.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2017-03-10
- Volume
- 27
- Issue
- 16
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2594043135
- Cited by
- 344
- References
- 56
- FWCI
- 12.98
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Más‐Montoya, M., & Janssen, R. A. J. (2017). The Effect of H‐ and J‐Aggregation on the Photophysical and Photovoltaic Properties of Small Thiophene–Pyridine–DPP Molecules for Bulk‐Heterojunction Solar Cells. Advanced Functional Materials. https://doi.org/10.1002/adfm.201605779
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