Imidazolium‐Substituted Polythiophenes as Efficient Electron Transport Materials Improving Photovoltaic Performance

Kesters, Jurgen; Ghoos, Toon; Penxten, Huguette; Drijkoningen, Jeroen; Vangerven, Tim; Lyons, Dani M.; Verreet, Bregt; Aernouts, Tom; Lutsen, Laurence; Vanderzande, Dirk; Manca, Jean; Maes, Wouter

doi:10.1002/aenm.201300049

Cited by 58 publications

(65 citation statements)

References 50 publications

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“…Replacing the ionic ammonium moieties with another ionic group may have a beneficial effect on the inherent I − V properties of OPV devices. The use of imidazolium‐substituted polythiophenes ( P2,Br ) (Scheme ) as a CIL in standard architecture PCDTBT : PC 71 BM solar cells resulted in a PCE of 6.22%, a clear enhancement in comparison to the reference device (5.23%) and also devices with P1,Br or PFN as the IL (6.03%) (Table , Entry 3) . P2,Br was also found to be suitable as an ultrathin interlayer cathode in inverted organic solar cells .…”

Section: Molecular Design and Performance Of Polythiophene Il Materialsmentioning

confidence: 99%

Molecular design of interfacial layers based on conjugated polythiophenes for polymer and hybrid solar cells

Houston

Richeter

Clément

et al. 2017

Polymer International

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In the past two decades, bulk heterojunction organic photovoltaic (OPV) devices have emerged as attractive candidates for solar energy conversion due to their lightweight design and potential for low‐cost, high‐throughput, solution‐phase processability. Interfacial engineering is a proven efficient approach to achieve OPV devices with high power conversion efficiencies. This mini‐review provides an overview of the key structural considerations necessary when undertaking the molecular design of conjugated polyelectrolytes, for application as interfacial layers (ILs). The different roles of ILs are outlined, together with the advantages and disadvantages of competing classes of IL materials. Particular emphasis is placed on the design and synthesis of water‐soluble polythiophene‐based IL materials and the influence of their structural characteristics on their performance as a promising class of IL material. Finally, the challenges and opportunities for polythiophenes as IL materials for OPV devices and other solution‐processed solar cell technologies (e.g. perovskite solar cells) are discussed. © 2017 Society of Chemical Industry

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Section: Molecular Design and Performance Of Polythiophene Il Materialsmentioning

confidence: 99%

Molecular design of interfacial layers based on conjugated polythiophenes for polymer and hybrid solar cells

Houston

Richeter

Clément

et al. 2017

Polymer International

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show abstract

“…These materials have attracted a lot of interest in the last decades because of wide range of potential applications such as fluorescence sensors for biomolecules [1], active layers in light emitting diodes [2], active components in electrochromic devices [3], or active components in photovoltaic cells [4,5]. In spite of such interest, the studies of solution properties are surprisingly rare although it is known that aggregates present in the solution can be transferred into the solid state.…”

Section: Introductionmentioning

confidence: 99%

Polythiophene-based conjugated polyelectrolyte: Optical properties and association behavior in solution

et al. 2015

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“…[28][29][30] Past efforts within our group on ionic polythiophene-based cathodic interlayers (to replace Ca) afforded clear PCE enhancements. [28][29][30] Past efforts within our group on ionic polythiophene-based cathodic interlayers (to replace Ca) afforded clear PCE enhancements.…”

Section: Photovoltaic Propertiesmentioning

confidence: 99%

Continuous Flow Polymer Synthesis toward Reproducible Large‐Scale Production for Efficient Bulk Heterojunction Organic Solar Cells

et al. 2015

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Organic photovoltaics (OPV) have attracted great interest as a solar cell technology with appealing mechanical, aesthetical, and economies-of-scale features. To drive OPV toward economic viability, low-cost, large-scale module production has to be realized in combination with increased top-quality material availability and minimal batch-to-batch variation. To this extent, continuous flow chemistry can serve as a powerful tool. In this contribution, a flow protocol is optimized for the high performance benzodithiophene-thienopyrroledione copolymer PBDTTPD and the material quality is probed through systematic solar-cell evaluation. A stepwise approach is adopted to turn the batch process into a reproducible and scalable continuous flow procedure. Solar cell devices fabricated using the obtained polymer batches deliver an average power conversion efficiency of 7.2 %. Upon incorporation of an ionic polythiophene-based cathodic interlayer, the photovoltaic performance could be enhanced to a maximum efficiency of 9.1 %.

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Imidazolium‐Substituted Polythiophenes as Efficient Electron Transport Materials Improving Photovoltaic Performance

Cited by 58 publications

References 50 publications

Molecular design of interfacial layers based on conjugated polythiophenes for polymer and hybrid solar cells

Molecular design of interfacial layers based on conjugated polythiophenes for polymer and hybrid solar cells

Polythiophene-based conjugated polyelectrolyte: Optical properties and association behavior in solution

Continuous Flow Polymer Synthesis toward Reproducible Large‐Scale Production for Efficient Bulk Heterojunction Organic Solar Cells

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