Beyond Donor-Acceptor (D-A) Approach: Structure-Optoelectronic Properties-Organic Photovoltaic Performance Correlation in New D-A1-D-A2 Low-Bandgap Conjugated Polymers

Chochos CL, Drakopoulou S, Katsouras A, Squeo BM, Sprau C, Colsmann A, Gregoriou VG, Cando AP, Allard S, Scherf U, Gasparini N, Kazerouni N, Ameri T, Brabec C, Avgeropoulos A (2017)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2017

Journal

Macromolecular Rapid Communications Wiley-VCH Verlag

Publisher: Wiley-VCH Verlag

Book Volume: 38

Article Number: 1600720

Journal Issue: 7

DOI: 10.1002/marc.201600720

Abstract

Low-bandgap near-infrared polymers are usually synthesized using the common donor-acceptor (D-A) approach. However, recently polymer chemists are introducing more complex chemical concepts for better fine tuning of their optoelectronic properties. Usually these studies are limited to one or two polymer examples in each case study so far, though. In this study, the dependence of optoelectronic and macroscopic (device performance) properties in a series of six new D-A-D-A low bandgap semiconducting polymers is reported for the first time. Correlation between the chemical structure of single-component polymer films and their optoelectronic properties has been achieved in terms of absorption maxima, optical bandgap, ionization potential, and electron affinity. Preliminary organic photovoltaic results based on blends of the D-A-D-A polymers as the electron donor mixed with the fullerene derivative [6,6]-phenyl-C-butyric acid methyl ester demonstrate power conversion efficiencies close to 4% with short-circuit current densities (J ) of around 11 mA cm, high fill factors up to 0.70, and high open-circuit voltages (V s) of 0.70 V. All the devices are fabricated in an inverted architecture with the photoactive layer processed in air with doctor blade technique, showing the compatibility with roll-to-roll large-scale manufacturing processes.

Authors with CRIS profile

Nicola Gasparini Institute Materials for Electronics and Energy Technology (i-MEET) Negar Kazerouni Institute Materials for Electronics and Energy Technology (i-MEET) Tayebeh Ameri Institute Materials for Electronics and Energy Technology (i-MEET) Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

University of Ioannina / Πανεπιστήμιο Ιωαννίνων GR Greece (GR) Bergische Universität Wuppertal DE Germany (DE) Karlsruhe Institute of Technology (KIT) DE Germany (DE)

How to cite

APA:

Chochos, C.L., Drakopoulou, S., Katsouras, A., Squeo, B.M., Sprau, C., Colsmann, A.,... Avgeropoulos, A. (2017). Beyond Donor-Acceptor (D-A) Approach: Structure-Optoelectronic Properties-Organic Photovoltaic Performance Correlation in New D-A1-D-A2 Low-Bandgap Conjugated Polymers. Macromolecular Rapid Communications, 38(7). https://dx.doi.org/10.1002/marc.201600720

MLA:

Chochos, Christos L., et al. "Beyond Donor-Acceptor (D-A) Approach: Structure-Optoelectronic Properties-Organic Photovoltaic Performance Correlation in New D-A1-D-A2 Low-Bandgap Conjugated Polymers." Macromolecular Rapid Communications 38.7 (2017).

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