Molecular Oligothiophene–Fullerene Dyad Reaching Over 5% Efficiency in Single-Material Organic Solar Cells

Aubele A, He Y, Kraus T, Li N, Mena-Osteritz E, Weitz P, Heumüller T, Zhang K, Brabec C, Bäuerle P (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Advanced Materials Wiley

DOI: 10.1002/adma.202103573

Abstract

A novel donor–acceptor dyad, 4, in which the conjugated oligothiophene donor is covalently connected to fullerene PC71BM by a flexible alkyl ester linker, is synthesized and applied as photoactive layer in solution-processed single-material organic solar cells (SMOSCs). Excellent photovoltaic performance, including a high short-circuit current density (JSC) of 13.56 mA cm−2, is achieved, leading to a power conversion efficiency of 5.34% in an inverted cell architecture, which is substantially increased compared to other molecular single materials. Furthermore, dyad 4-based SMOSCs display excellent stability maintaining 96% of the initial performance after 750 h (one month) of continuous illumination and operation under simulated AM 1.5G irradiation. These results will strengthen the rational molecular design to further develop SMOSCs for potential industrial application.

Authors with CRIS profile

Yakun He Institute Materials for Electronics and Energy Technology (i-MEET) Ning Li Institute Materials for Electronics and Energy Technology (i-MEET) Paul Weitz Institute Materials for Electronics and Energy Technology (i-MEET) Thomas Heumüller Institute Materials for Electronics and Energy Technology (i-MEET) Kaicheng Zhang Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Universität Ulm DE Germany (DE)

How to cite

APA:

Aubele, A., He, Y., Kraus, T., Li, N., Mena-Osteritz, E., Weitz, P.,... Bäuerle, P. (2021). Molecular Oligothiophene–Fullerene Dyad Reaching Over 5% Efficiency in Single-Material Organic Solar Cells. Advanced Materials. https://doi.org/10.1002/adma.202103573

MLA:

Aubele, Anna, et al. "Molecular Oligothiophene–Fullerene Dyad Reaching Over 5% Efficiency in Single-Material Organic Solar Cells." Advanced Materials (2021).

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