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

Roberto Sorrentino, Marta Penconi, Anita Andicsová-Eckstein, Guido Scavia, Helena Švajdlenková, Erika Kozma and Silvia Luzzati
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Roberto Sorrentino: Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Chimiche “G. Natta”, CNR—SCITEC, via A. Corti 12, 20133 Milan, Italy
Marta Penconi: Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Chimiche “G. Natta”, CNR—SCITEC, via A. Corti 12, 20133 Milan, Italy
Anita Andicsová-Eckstein: Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia
Guido Scavia: Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Chimiche “G. Natta”, CNR—SCITEC, via A. Corti 12, 20133 Milan, Italy
Helena Švajdlenková: Polymer Institute, Slovak Academy of Sciences, Dúbravská cesta 9, 84541 Bratislava, Slovakia
Erika Kozma: Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Chimiche “G. Natta”, CNR—SCITEC, via A. Corti 12, 20133 Milan, Italy
Silvia Luzzati: Consiglio Nazionale delle Ricerche, Istituto di Scienze e Tecnologie Chimiche “G. Natta”, CNR—SCITEC, via A. Corti 12, 20133 Milan, Italy

Energies, 2021, vol. 14, issue 2, 1-11

Abstract: 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.

Keywords: conjugated polyelectrolytes; polymer solar cells; cathode interlayers; interfaces engineering; naphthalene diimide; n-type semiconductor (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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