A5014029801- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- solar cell performance optimization
- Thin-Film Transistor Technologies
- Silicon and Solar Cell Technologies
- Nanowire Synthesis and Applications
- Nanomaterials and Printing Technologies
- Advanced Sensor and Energy Harvesting Materials
- Molecular Junctions and Nanostructures
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Organic Light-Emitting Diodes Research
- Photovoltaic System Optimization Techniques
- Photovoltaic Systems and Sustainability
- Semiconductor materials and devices
- Nanofabrication and Lithography Techniques
- Synthesis and properties of polymers
- Recycling and Waste Management Techniques
- Spectroscopy and Laser Applications
- Extraction and Separation Processes
- Green IT and Sustainability
- Perovskite Materials and Applications
- Per- and polyfluoroalkyl substances research
- Force Microscopy Techniques and Applications
- Innovative Microfluidic and Catalytic Techniques Innovation
Technical University of Denmark
2010-2020
National Institute of Solar Energy
2010
University of Copenhagen
2005-2008
Ørsted (Denmark)
2005
As the performance in terms of power conversion efficiency and operational stability for polymer organic solar cells is rapidly approaching key 10–10 targets (10 % 10 years stability) quest efficient, scalable, rational processing methods has begun. The are being approached through consistent laboratory research efforts, which coupled with early commercial efforts have resulted a fast moving field dawning new industry. We review roll-to-roll techniques required to bring magnificent into...
Abstract With the prospect of extremely fast manufacture very low cost devices, organic electronics prepared by thin film processing techniques that are compatible with roll‐to‐roll (R2R) methods presently receiving an increasing interest. Several technologies using films at point, where transfer from laboratory to a more production‐oriented environment is within reach. In this review, we aim giving overview some R2R‐compatible can be used in such transfer, as well current status R2R...
A solar park based on polymer cells is described and analyzed with respect to performance, practicality, installation speed, energy payback time. It found that a high voltage where are all printed in series enables an rate Watts installed per minute far exceed any other PV technology existence. The time for the practical of cell foil wooden 250 square meter platform its present form 277 days when operated Denmark 180 southern Spain. de‐installation above 100 m min −1 , which, performance web...
The rapidly expanding field of polymer and organic solar cells is reviewed in the context materials, processes devices that significantly deviate from standard approach which involves rigid glass substrates, indium-tin-oxide electrodes, spincoated layers conjugated polymer/fullerene mixtures evaporated metal electrodes a flat multilayer geometry. It likely significant advances can be found by pursuing many these novel ideas further purpose this review to highlight reports hopefully spark new...
Inline printing and coating methods have been demonstrated to enable a high technical yield of fully roll-to-roll processed polymer tandem solar cell modules. We demonstrate generality by employing different material sets also describe how the ink systems must be carefully co-developed in order reach ambitious objective printed coated 14-layer flexible stack. The methodologies involved are flexographic printing, rotary screen slot-die coating, X-ray scattering, electrical testing...
A comparative photochemical stability study of a wide range π-conjugated polymers relevant to polymer solar cells is presented. The behavior each material has been investigated under simulated sunlight (1 sun, 1000 W m−2, AM 1.5G) and ambient atmosphere. Degradation was monitored during ageing combining UV-visible infrared spectroscopies. From the comparison collected data, influence chemical structure on its discussed. General rules relative structure–stability relationship are proposed.
Small polymer solar cell modules that are manufactured without indium-tin-oxide using only roll-to-roll printing and coating techniques under ambient conditions enable facile integration into a simple demonstrator (for example laser pointer). Semitransparent front electrode grid structures prepared by inkjet in conjunction with photonic sintering preparation of complete on flexible substrates subsequent the pointer demonstrator. As service to our authors readers, this journal provides...
Abstract Fast inline roll‐to‐roll printing and coating on polyethylene terephthalate (PET) barrier foil was demonstrated under ambient conditions at web speeds of 10 m min −1 for the manufacture indium‐tin‐oxide‐free (ITO‐free) polymer solar cells comprising a 6‐layer stack: silver‐grid/PEDOT:PSS/ZnO/P3HT:PCBM/PEDOT:PSS/silver‐grid. The first second layers were printed same time using processing speed where flexographic hexagonal silver grid comprises layer followed by rotary‐screen...
Semitransparent front electrodes for polymer solar cells, that are printable and roll-to-roll processable under ambient conditions using different approaches, explored in this report. The excellent smoothness of indium-tin-oxide (ITO) has traditionally been believed to be difficult achieve printed grids, as surface topographies accumulate when processing subsequent layers, leading shunts between the top bottom metallic electrodes. Here we demonstrate how aqueous nanoparticle based silver...
The challenges of printing all layers in polymer solar cells from aqueous solution are met by design inks for the electron-, hole-, active-, and metallic back electrode-layers. conversion each layer to an insoluble state after enables multilayer formation same solvent (water). photograph here was taken just before screen silver ink. Utilization sunlight as energy source is one least exploited carbon-neutral methods available today. potential enormous, with a wide range possible applications...
We present a cost analysis based on state of the art printing and coating processes to fully encapsulated, flexible ITO- vacuum-free polymer solar cell modules. Manufacturing data for both single junctions tandem are presented analyzed. Within this calculation most expensive layers processing steps identified. Based large roll-to-roll experiments exact material consumptions were determined. In addition pilot scale experiment here, projections medium scenarios serve as guide achieve targets 5...
Abstract Here, we present a process based on roll‐to‐roll (R2R) technology which allows for very fast processing of polymer thermoelectric ( TE ) devices and furthermore demonstrate simplified but more efficient way serially connecting these by means R2R thin‐film processing. The new device architecture makes it possible to use only one material (opposed two materials are employed in well‐known Peltier elements), total 18,000 connected junctions were prepared flexoprinting silver electrodes...
The mechanical properties of low-band-gap polymers are important for the long-term survivability roll-to-roll processed organic electronic devices. Such devices, e.g., solar cells, displays, and thin-film transistors, must survive rigors coating also thermal forces in outdoor environment stretchable ultraflexible form factors. This paper measures stiffness (tensile modulus), ductility (crack-onset strain), or both a combinatorial library 51 polymers. purpose this study is to systematically...
The results of a meta‐analysis conducted on organic photovoltaics (OPV) lifetime data reported in the literature is presented through compilation an extensive OPV database based large number articles, followed by analysis body data. We fully reveal progress lifetimes. Furthermore, generic marker has been defined, which helps with gauging and comparing performance different architectures materials from perspective device stability. Based analysis, conclusions are drawn bottlenecks for...
It's a free-for-all! ITO-free organic photovoltaics are fabricated using roll-to-roll processing technology and laser cutting to separate encapsulate individual modules. The modules then made available free-of-charge from the author′s website (in an effort named "freeOPV") create platform which can be evaluated information shared by researchers all over world.
Silver nanowires (AgNWs) and zinc oxide (ZnO) are deposited on flexible substrates using fast roll‐to‐roll (R2R) processing. The AgNW film polyethylene terephthalate (PET) shows >80% uniform optical transmission in the range of 550–900 nm. This electrode is compared to previously reported currently widely produced indium‐tin‐oxide (ITO) replacement comprising (PET)|silver grid|poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)|ZnO known as Flextrode. AgNW/ZnO higher than...
We report the stability test results of ITO-free OPV modules using roll-to-roll printed silver nanowire networks as front electrode.
Abstract Organic solar cells have recently experienced a substantial leap in power conversion efficiency, part driven by formulations with new non-fullerene acceptors. This has brought the technology past psychologically important mark of 15% efficiency for unscaled laboratory devices, and results are stimulating another burst research activity. Whether this will propel into viable commercial contender yet to be determined, but realize potential organic utility scale application, fabrication...
Here we show polymer solar cells manufactured using only printing and coating of abundant materials directly on flexible plastic substrates or barrier foil roll-to-roll methods. Central to the development is a particular compatible post-processing step that converts pristine non-functional multilayer-coated stack into functional cell through formation charge selective interface, in situ, following short electrical pulse with high current density. After fast device becomes active all devices...
A comparison of the most promising silver back electrode manufacturing processes for polymer solar cells is presented. All printing methods are fully roll-to-roll (R2R) processed under ambient conditions with same cell layer stack better evaluation. This work delivers process recommendations and highlights challenges each method to achieve good performing modules highly efficient device manufacturing.
The most distinct advantage of the polymer solar cell is possibility for roll‐to‐roll (R2R) fabrication compatibility based on printing and coating processes. R2R encapsulation last crucial process step in manufacturing workflow evaluated this study. Polymer modules are directly printed barrier foil encapsulated with same either backside or both sides device. three lamination methods comprise UV‐curable epoxy resin, hotmelt, pressure sensitive adhesive (PSA). It shown that a single‐sided...