Asymmetric perinone-based electron-collecting monolayer materials for n–i–p perovskite solar cells

Abstract

A series of asymmetric perinone derivatives (PERNI) bearing different substituents (methyl, fluoro, chloro, bromo, and cyano) on the benzimidazole moiety were synthesized and investigated for possible application as electron-collecting monolayer materials in negative–intrinsic–positive perovskite solar cells. These compounds exhibit good thermal stability and suitable frontier molecular orbital energy levels for electron extraction and hole blocking. The perinone-based devices were found to demonstrate comparable power conversion efficiencies and higher operational stability than reference devices using the representative naphthalene diimide-based monolayer material under the same fabrication conditions. Within the PERNI series, devices fabricated with the chloro-substituted PERNI-Cl were found to tend to exhibit the highest open-circuit voltage and fill factor owing to the smallest energy offset between the lowest unoccupied molecular orbital and the conduction band of the perovskite.

Graphical abstract: Asymmetric perinone-based electron-collecting monolayer materials for n–i–p perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
09 Apr 2025
Accepted
16 Jun 2025
First published
20 Jun 2025
This article is Open Access
Creative Commons BY license

J. Mater. Chem. C, 2025, Advance Article

Asymmetric perinone-based electron-collecting monolayer materials for n–i–p perovskite solar cells

J. Petrulevicius, M. A. Truong, M. Daskeviciene, G. Bubniene, S. Hira, Y. Iwasaki, T. Malinauskas, A. Wakamiya and V. Getautis, J. Mater. Chem. C, 2025, Advance Article , DOI: 10.1039/D5TC01485A

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