Tuning the viscosity of halogen free bulk heterojunction inks for inkjet printed organic solar cells

Lamont, C.; Eggenhuisen, Tamara M.; Coenen, Michiel J. J.; Slaats, Thijs W.L.; Andriessen, Ronn; Groen, W.A.

doi:10.1016/j.orgel.2014.10.052

Cited by 26 publications

(21 citation statements)

References 32 publications

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“…When thinking about the massive production of solar cells in an industrial production environment, large amounts of ink are expected to be deposited per unit of time and therefore also large amounts of solvents need to be evaporated. A large effort is being made to eliminate halogenated solvents, typically used in research for OPV device preparation, from industrial inks trying to reduce environmental impact [ 226 , 227 ]. Chlorine-free solvent mixtures have been demonstrated to lead to device efficiencies closer to those reached when using chlorinated solvents in the application of the photoactive layer as shown by Lange and coworkers [ 226 ].…”

Section: Inkjet Printing Of Organic Photovoltaicsmentioning

confidence: 99%

Inkjet Printing of Functional Materials for Optical and Photonic Applications

et al. 2016

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Inkjet printing, traditionally used in graphics, has been widely investigated as a valuable tool in the preparation of functional surfaces and devices. This review focuses on the use of inkjet printing technology for the manufacturing of different optical elements and photonic devices. The presented overview mainly surveys work done in the fabrication of micro-optical components such as microlenses, waveguides and integrated lasers; the manufacturing of large area light emitting diodes displays, liquid crystal displays and solar cells; as well as the preparation of liquid crystal and colloidal crystal based photonic devices working as lasers or optical sensors. Special emphasis is placed on reviewing the materials employed as well as in the relevance of inkjet in the manufacturing of the different devices showing in each of the revised technologies, main achievements, applications and challenges.

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Section: Inkjet Printing Of Organic Photovoltaicsmentioning

confidence: 99%

Inkjet Printing of Functional Materials for Optical and Photonic Applications

et al. 2016

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“…[ 90 ] Eggenhuisen and coworkers successfully controlled the viscosity of nonhalogenated solvent‐based photoactive inks using polystyrene (PS). [ 91 ] A small amount of PS was introduced into the photoactive ink, which resulted in a substantial increase in the dynamic viscosity, with a small photocurrent loss of ≈20% and, thus, enhanced processability of the ink. The OPV device exhibited a PCE of 1.76% with J SC of 5.49 mA cm −2 , V OC of 0.561 V, and FF of 57.1% from a cell area of 0.805 cm 2 .…”

Section: Morphology Control For Large‐area Fabricationmentioning

confidence: 99%

Progress in Materials, Solution Processes, and Long‐Term Stability for Large‐Area Organic Photovoltaics

et al. 2020

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processing at low cost compared with their inorganic counterparts. The first breakthrough in OPV technology was achieved by realizing BHJ active layers with nanoscale bicontinuous network structures of electron donor (D) and acceptor (A) materials; this structure enables efficient exciton separation at the D-A interface. [1] The development of push-pull-type donor polymers has effectively extended the light absorption range of OPVs into the near-infrared (NIR) region, which has ultimately led to substantial improvements in power conversion efficiency (PCE) to greater than 10%. In particular, highly crystalline donor polymers such as PffBT4T-2OD substantially improved charge-transport properties, enabling OPV devices with a BHJ film thickness greater than 200 nm to operate. [2] Historically, fullerene derivatives have been dominantly used as acceptors in OPVs because of their excellent electron-accepting and transporting properties and because they can be prepared with a morphology optimized for efficient charge-carrier generation and transport. [3,4] However, despite such promising characteristics, OPVs based on fullerene derivatives have drawbacks of limited light-absorption properties, poor energylevel tunability, and poor morphological and/or photochemical stability. [5,6] Over the past several years, tremendous efforts have been directed toward the development of nonfullerenebased OPVs to overcome these limitations. The advantages of nonfullerene acceptors over fullerenes include easily tunable energy levels, which enables OPVs to achieve substantially higher open-circuit voltages (V OC s) than conventional fullerenebased devices. [7] In addition, nonfullerene acceptors enable better light absorption properties and therefore generate higher photocurrents than fullerene derivatives. [8] Furthermore, nonfullerene acceptors with appropriate molecular tailoring can provide chemically stable photoactive materials, potentially enhancing long-term device stability. [5] Recent breakthroughs realized through the development of small molecular nonfullerene acceptors have resulted in remarkable enhancements in the PCEs of single-junction OPVs to greater than 17%, which demonstrates the potential for the large-scale manufacture of OPVs. [9] When translating photovoltaic technology from laboratory to commercial products, low cost, high PCE, and high Organic solar cells based on bulk heterojunctions (BHJs) are attractive energy-conversion devices that can generate electricity from absorbed sunlight by dissociating excitons and collecting charge carriers. Recent breakthroughs attained by development of nonfullerene acceptors result in significant enhancement in power conversion efficiency (PCEs) exceeding 17%. However, most of researches have focused on pursuing high efficiency of small-area (<1 cm 2) unit cells fabricated usually with spin coating. For practical application of organic photovoltaics (OPVs) from lab-scale unit cells to industrial products, it is essential to develop efficient technologies that can extend act...

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“…Lamont et al added polystyrene with the bulk heterojunction inks to investigate the increment of the viscosity for inkjet-printed OSC [49]. They have chosen Polystyrene in view of its dissolvability in the utilized halogen free fragrant solvent system.…”

Section: Viscosity Limitationsmentioning

confidence: 99%

Organic Solar Cell by Inkjet Printing—An Overview

2017

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Abstract:In recent years, organic solar cells became more attractive due to their flexible power devices and the potential for low-cost manufacturing. Inkjet printing is a very potential manufacturing technique of organic solar cells because of its low material usage, flexibility, and large area formation. In this paper, we presented an overall review on the inkjet printing technology as well as advantages of inkjet-printing, comparison of inkjet printing with other printing technologies and its potential for organic solar cells (OSCs). Here we highlighted in more details about the viability of environment-friendly and cost-effective, non-halogenated indium tin oxide (ITO) free large scale roll to roll production of the OSC by inkjet printing technology. The challenges of inkjet printing like the viscosity limitations, nozzle clogging, coffee ring effect, and limitation of printability as well as dot spacing are also discussed. Lastly, some of the improvement strategies for getting the higher efficiency of the OSCs have been suggested.

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Tuning the viscosity of halogen free bulk heterojunction inks for inkjet printed organic solar cells

Cited by 26 publications

References 32 publications

Inkjet Printing of Functional Materials for Optical and Photonic Applications

Inkjet Printing of Functional Materials for Optical and Photonic Applications

Progress in Materials, Solution Processes, and Long‐Term Stability for Large‐Area Organic Photovoltaics

Organic Solar Cell by Inkjet Printing—An Overview

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