An N-type Naphthalene Diimide Ionene Polymer as Cathode Interlayer for Organic Solar Cells

Autor: Roberto Sorrentino, Marta Penconi, Anita Andicsová-Eckstein, Guido Scavia, Helena Švajdlenková, Erika Kozma, Silvia Luzzati
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Energies, Vol 14, Iss 2, p 454 (2021)
Druh dokumentu: article
ISSN: 1996-1073
DOI: 10.3390/en14020454
Popis: Polymer solar cells (PSCs) based on non-fullerene acceptors have the advantages of synthetic versatility, strong absorption ability, and high thermal stability. These characteristics result in impressive power conversion efficiency values, but to further push both the performance and the stability of PSCs, the insertion of appropriate interlayers in the device structure remains mandatory. Herein, a naphthalene diimide-based cathode interlayer (NDI-OH) is synthesized with a facile three-step reaction and used as a cathode interlayer for fullerene and non-fullerene PSCs. This cationic polyelectrolyte exhibited good solubility in alcohol solvents, transparency in the visible range, self-doping behavior, and good film forming ability. All these characteristics allowed the increase in the devices’ power conversion efficiencies (PCE) both for fullerene and non-fullerene-based PSCs. The successful results make NDI-OH a promising cathode interlayer to apply in PSCs.
Databáze: Directory of Open Access Journals
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