Degradation and Stabilization of Organic Solar Cells

Vida Engmann^a, Michela Prete^a, Mikkel Bregnhoj^b, Pavel Troshin^c^,^d, Peter Ogilby^b, Morten Madsen^a

^aUniversity of Southern Denmark, SDU NanoSYD, Mads Clausen Institute, Alsion, 2, Sønderborg, Denmark

^bAarhus University - DK, Nordre Ringgade, 1, Aarhus, Denmark

^cInstitute of Problems of Chemical Physics of Russian Academy of Sciences (IPCP RAS), Academician Semenov avenue 1, Moscow, Russian Federation

^dSkoltech - Skolkovo Institute of Science and Technology, Moscow, Bolshoy Boulevard 30, Moskva, Russian Federation

Proceedings of Online School on Hybrid, Organic and Perovskite Photovoltaics (HOPE-PV)

Online, Spain, 2020 November 3rd - 13th

Organizers: Sergey M. Aldoshin, Jovana Milic, Keith Stevenson and Pavel Troshin

Invited Speaker, Vida Engmann, presentation 002
Publication date: 23rd October 2020

This lecture will focus on the degradation of organic solar cell devices. It will give an overview over the main degradation processes which occur under standard working conditions, and lead to decay of device performance as measured in stability testing lifetime setups according to ISOS protocols. Understanding of photooxidative degradation of the active layers will be given special attention, with an outlook on the stabilization strategies. Additive-assisted stabilization will be elaborated in detail, with up to date examples from our group on the use of biomimetic singlet oxygen and fullerene triplet quenchers [1] [2], as well as from other groups reporting on the use of antioxidants, radical scavengers, UV absorbers, and similar, for stabilization of organic and perovskite solar cell devices [3].

References:

[1] Turkovic V, Prete M, Bregnhøj M, Inasaridze L, Volyniuk D, Obrezkov FA, Grazulevicius JV, Engmann S, Rubahn HG, Troshin PA, Ogilby PR, Madsen M. Biomimetic Approach to Inhibition of Photooxidation in Organic Solar Cells Using Beta-Carotene as an Additive. ACS Appl Mater Interfaces. 2019;11(44):41570-41579.

[2] Bregnhøj M, Prete M, Turkovic V, Petersen AU, Nielsen MB, Madsen M, Ogilby PR. Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics: inhibiting degradation initiated by singlet oxygen at a molecular level. Methods Appl Fluoresc. 2019;8(1):014001.

[3] Turkovic V, Madsen M. Inhibiting Photo-oxidative Degradation in Organic Solar Cells using Stabilizing Additives. In World Scientific Reference of Hybrid Materials, Vol. 2 Devices from Hybrid and Organic Materials, p 367-421, 2019, World Scientific Publishing.

Acknowledgements:

The authors thank Villumfonden, Dansk Frie Forskningsfond and EU Cost Action StableNextSol for funding of this work.

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