Communications

Fullerene-based carboxylic acids for improving performance and stability of perovskite solar cells

O. A. Kraevaya^a, S. L. Nikitenko^a, N. A. Slesarenko^a, E. P. Antoshkina^bc, E. A. Khakina^b, A. S. Peregudov^b, P. A. Troshin^da, S. M. Aldoshin<sup>a

a</sup> Federal Research Center of Problems of Chemical Physics and Medicinal Chemistry, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation
^b A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 119334 Moscow, Russian Federation
^c Moscow Institute of Physics and Technology (National Research University), 141701 Dolgoprudny, Moscow Region, Russian Federation
^d Zhengzhou Research Institute, Harbin Institute of Technology, 450003 Zhengzhou, China

Аннотация: We report a family of fullerene-based carboxylic acids with varied molecular structure affecting their ability to anchor to the surface of metal oxides, in particular SnO₂, used as electron-transport materials in n-i-p perovskite solar cells. Compounds having the lowest solubility and/or increased number of carboxyl groups per fullerene core tend to form more robust passivation coatings over SnO₂ and thus deliver the highest solar cell efficiencies and the best device operational stabilities. The results indicate the promise of further rational design of the fullerene-based acids with improved properties to achieve simultaneously a high solar light conversion efficiency and a long-term stability.

Ключевые слова: fullerene derivatives, electron-transport materials, perovskite solar cells, stability, passivation coatings.

Поступила в редакцию: 21.11.2024
Принята в печать: 07.02.2025

Язык публикации: английский

DOI: 10.71267/mencom.7688

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