Biomimetic Approach to Inhibition of Photooxidation in Organic Solar Cells Using Beta-Carotene as an Additive
| Autor: | Morten Madsen, Juozas V. Grazulevicius, Pavel A. Troshin, Peter R. Ogilby, Mikkel Bregnhøj, Michela Prete, Dmytro Volyniuk, Liana N. Inasaridze, Vida Turkovic, Sebastian Engmann, Horst-Günter Rubahn, Filipp A. Obrezkov |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Antioxidant
Materials science Organic solar cell Singlet oxygen medicine.medical_treatment organic solar cells 02 engineering and technology Limiting stability 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Article singlet oxygen burn-in 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering beta-Carotene medicine General Materials Science 0210 nano-technology |
| Zdroj: | Turkovic, V, Prete, M, Bregnhøj, M, Inasaridze, L, Volyniuk, D, Obrezkov, F, Grazulevicius, J, Engmann, S, Rubahn, H-G, Troshin, P, Ogilby, P R & Madsen, M 2019, ' Biomimetic Approach to Inhibition of Photooxidation in Organic Solar Cells Using Beta-Carotene as an Additive ', ACS Applied Materials and Interfaces, vol. 11, no. 44, pp. 41570-41579 . https://doi.org/10.1021/acsami.9b13085 Turkovic, V, Prete, M, Bregnhøj, M, Inasaridze, L, Volyniuk, D, Obrezkov, F A, Gražulevičius, J V, Engmann, S, Rubahn, H-G, Troshin, P A, Ogilby, P R & Madsen, M 2019, ' Biomimetic Approach to Inhibition of Photooxidation in Organic Solar Cells Using Beta-Carotene as an Additive ', A C S Applied Materials and Interfaces, vol. 11, no. 44, pp. 41570−41579 . https://doi.org/10.1021/acsami.9b13085 ACS Appl Mater Interfaces |
| Popis: | Recent efficiency records of organic photovoltaics (OPV) highlight stability as a limiting weakness. Incorporation of stabilizers is a desirable approach for inhibiting degradation-it is inexpensive and readily up-scalable. However, to date, such additives have had limited success. We show that β-carotene (BC), an inexpensive and green, naturally occurring antioxidant, dramatically improves OPV stability. When compared to nonstabilized reference devices, the accumulated power generation of PTB7:[70]PCBM devices in the presence of BC increases by an impressive factor of 6, due to stabilization of both the burn-in and the lifetime, and by a factor of 21 for P3HT:[60]PCBM devices, owing to a longer lifetime. Using electron spin resonance and time-resolved near-IR emission spectroscopies, we probed radical and singlet oxygen concentrations. We demonstrate that singlet oxygen sensitized by [70]PCBM causes the "burn-in" of PTB7:[70]PCBM devices and that BC effectively mitigates it. Our results provide an effective solution to the problem that currently limits widespread use of OPV. |
| Databáze: | OpenAIRE |
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