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Biomimetic Approach to Inhibition of Photooxidation in Organic Solar Cells Using Beta-Carotene as an Additive

Biomimetic Approach to Inhibition of Photooxidation in Organic Solar Cells Using Beta-Carotene as an Additive

Authors :
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
Source :
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
Publication Year :
2019

Abstract

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.

Details

Language :
English
Database :
OpenAIRE
Journal :
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
Accession number :
edsair.doi.dedup.....a5a3d6ce1f82b9ff62c006bad285b5a0
Full Text :
https://doi.org/10.1021/acsami.9b13085