Cited by 73Organic Electronics and PhotovoltaicsOrganic Light-Emitting Diodes ResearchBlock Copolymer Self-Assembly

Improved Photovoltaic Performance of a Semicrystalline Narrow Bandgap Copolymer Based on 4 H-Cyclopenta[2,1-b:3,4-b′]dithiophene Donor and Thiazolo[5,4-d]thiazole Acceptor Units

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Van Mierloo, Sarah, Hadipour, Afshin, Spijkman, Mark-Jan, Van den Brande, Niko, Ruttens, Bart, Kesters, Jurgen, D’Haen, Jan, Van Assche, Guy +6 more·2012·Chemistry of Materials

Abstract

A solution processable narrow bandgap polymer composed of alternating 2,5-dithienylthiazolo[5,4- d ]thiazole and asymmetrically alkyl-substituted 4 H -cyclopenta[2,1- b:3,4- b ′]dithiophene units ( PCPDT-DTTzTz ) was synthesized by Suzuki polycondensation and the donor–acceptor copolymer was thoroughly characterized. Thermal analysis and X-ray diffraction studies disclosed the semicrystalline nature of the material. When blended with PC 71 BM and integrated in bulk heterojunction organic solar cells, a moderate power conversion efficiency of 2.43% under AM 1.5 G (100 mW/cm 2 ) conditions was obtained. However, upon purification of the semiconducting copolymer by preparative size exclusion chromatography, a noticeable rise in power conversion efficiency to 4.03% was achieved. The purified polymer exhibited a relatively high field-effect carrier mobility of 1.0 × 10 –3 cm 2 /(V s). The active layer morphology was explored by atomic force microscopy and transmission electron microscopy studies, showing phase segregation on the nanometer scale.

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  • It has been proven in many cases that polymers with a high molecular weight could achieve a relatively high PCE.

    “It has been proven in many cases that polymers with a high molecular weight could achieve a relatively high PCE. 31 -34”

    From Recent progress in porphyrin-based materials for organic solar cells (2018) · cites this paper as [32]

    The indexed Abstract reports that purification of one copolymer raised its power conversion efficiency from 2.43% to 4.03%. It does not say that the purified polymer had a high molecular weight or establish a molecular-weight–PCE relationship across many cases. (LLM, conf=0.78)

    Experimental — accuracy not yet measured

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Authors
Van Mierloo, S., Hadipour, A., Spijkman, M.-J., Van den Brande, N., Ruttens, B., Kesters, J., D’Haen, J., Van Assche, G., de Leeuw, D. M., Aernouts, T., Manca, J., Lutsen, L., Vanderzande, D. J., & Maes, W.
Affiliations
  • Institute for Materials Research (IMO-IMOMEC), Design & Synthesis of Organic Semiconductors (DSOS), Hasselt University, Agoralaan 1 - Building D, B-3590 Diepenbeek, Belgium
  • IMEC (BE)
  • University of Groningen (NL)
  • Department of Materials and Chemistry, Physical Chemistry and Polymer Science, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussels, Belgium
  • Hasselt University (BE)
  • Philips Research Laboratories, High Tech Campus 4, 5656 AE Eindhoven, The Netherlands
Corresponding author
  • Vanderzande, Dirk J.
  • Maes, Wouter
Venue
Chemistry of Materials
Published
2012-01-30
Volume
24
Issue
3
Pages
587-593
ISSN
  • 0897-4756 (ISSN-L)
  • 1520-5002
OpenAlex
W2492817148
Cited by
73
References
54
Citations by year
2026: 1 · 2024: 2 · 2023: 2 · 2022: 1 · 2021: 1 · 2020: 3 · 2018: 2 · 2017: 3 · 2016: 5 · 2015: 11 · 2014: 17 · 2013: 17 · 2012: 8
FWCI
10.84
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Chemistry of Materials (publishedVersion)
  • Document Server@UHasselt (UHasselt) (submittedVersion)
  • University of Groningen research database (University of Groningen / Centre for Information Technology) (submittedVersion, other-oa)
Funders
  • Fonds Wetenschappelijk Onderzoek
  • Vlaamse regering
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
  • Physical Sciences › Materials Science › Materials Chemistry › Block Copolymer Self-Assembly
Keywords
thiazolo[5,4-d]thiazole, donor-acceptor polymers, semicrystalline polymers, organic solar cells, bulk heterojunction, PC71BM blends, Suzuki polycondensation, phase segregation, active layer morphology

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