Finished Projects

09/2019 – 08/2022 – EffiLayers

2020 Effilayers logo2020 Finanzierung effilayers

„Process optimization regarding the roll-to-roll production of novel highly efficient organic photovoltaic cells-EffiLayers“

The EffiLayers project as the successor of Photonflex (2016 – 2019) and Flexlas (2012 – 2015) is focussing on the development, process optimization, and production of flexible, highly efficient, and ultra-thin organic solar cells using a roll-to-roll coating system.

Organic photovoltaic cells currently still exhibit lower efficiency and durability compared to traditional silicon-based solar cells. The qualification of novel and efficient materials, as well as the optimization of the coating application by means of roll-to-roll coating equipment, should contribute to a significant increase in efficiency.

Through wet chemical coating processes, the functional layers are applied in the nanometer scale by using a heatable slot-die and processed with different laser sources (short pulse and ultra-short pulse range). After photonic laser drying and thin-film ablation, the OPV cell is protectively sealed by laser encapsulation with a barrier film. The individual processes are monitored by various sensors, and a process control system is implemented.

In this project, Coatema is focusing in particular on the modification of the entire slot-die application process. The novel swiveling die-module enables a stable process through variable adjustment of the die in the range of 8 to 12 o’clock. A proposed horizontal mechanism for adjusting the die ensures precise adjustment or positioning of the substrate to be coated during multiple coating processes. For a uniform application of the substrate, an electrically heated die is used.

In collaboration with the partners, the new process optimizations of the roll-to-roll production are demonstrated and evaluated for the novel OPV cell.



01/2018 – 12/2021 – Greensense

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Sustainable, wireless, autonomous nanocellulose-based quantitative Drugs-of-Abuse (DoA) biosensing platform

Printed electronics is one of the fastest growing technologies in the world. Paper and plastic are two types of flexible materials that constitute key substrates in the development of future flexible electronic devices. On the contrary of those based on more conventional plastic substrates, paper-based electronics, made from cellulose, have the advantages of low cost, recyclability and can be expected to have a significant impact in the reduction of environmental impact of "electronic trash" and in providing new opportunities to the pulp/paper manufacturing industry. Unfortunately, the surface properties of conventional paper are not suitable for printed electronics and, typically plastic coatings based on fossil-oil polymers are applied. From a sustainable point of view, this has augmented the interest in alternative renewable biopolymer films and coatings with similar properties. Among the different alternatives, nanocellulose (NC) based films with strength, high aspect ratio, transparency and low porosity and smooth surface roughness are a promising potential alternative.

In the project GREENSENSE we merge healthcare diagnostics and printed electronics in the form of a fully-integrated biosensing platform using nanocellulose. The biosensing platform with the newly developed printed DoA biosensors will integrate different NC-based printed electronic components (supercapacitor and/or a primary battery as printed energy storage (E. storage), display and NFC antenna) and a single microchip to have energy autonomy, wireless communication and to be easy for the user to read the results. High output printing techniques, such as sheet-to-sheet (S2S) screen printing and/or inkjet printing will be used for the printing of the different functional inks onto NC-based substrates. The final NC-based biosensing platform will be easy to operate, flexible, mass producible, cost-effective, environmentally friendly, disposable, and recyclable and will have low power and energy consumption.



10/2018 – 09/2021 – OLEDSOLAR


2020 oledsolar logo bw 2020 OLEG EU Text en


Innovative manufacturing of opto-electronic devices

Emerging opto-electronic devices open the way for exciting new applications every day. Meeting industry’s requirements for mass production of such smart next-generation devices requires addressing a range of emerging challenges to enable best-value production at high manufacturing volumes and optimal efficiency.

OLEDSOLAR aims to tackle these challenges by developing innovative manufacturing processes for critical steps in the production of opto-electronic devices, including Organic LED (OLED), organic photovoltaics (OPV) and copper indium gallium selenide (CIGS) based solar cells. Related project activities include scaling up reconfigurable high-yield processes, testing them in pilot lines and validating them in production lines.

A complete system of inspection, quality control, functional testing and measurements using advanced systems and sensors will be optimised in the project for efficient manufacturing of opto-electronics parts. A special focus here is on automation and advance data processing for the overall control and monitoring of roll-to-roll (R2R) and sheet-to-sheet (S2S) manufacturing processes. At the same time, recycling and re-use strategies will be developed to ensure resource efficiency and reduction of high-value product waste.

Coatema’s role is to further improve registration in R2R technologies at the Coatema R&D centre and at the Printocent demo line at VTT. Here Coatema will integrate the registration camera by VTT into the demo line and improve machinery in order to improve the overlay between consecutive printing jobs down to an accuracy of 50 micrometers or better for screen printing technology.



10/2017 – 06/2021 – SOLID

solid BMWT FKZ 03XP0129C

Innovative solid state batteries based on sol-gel materials with a Li-metal anode and implemented 3D structure.

One key factor regarding the electro mobility future are inherently safe and power efficient battery technologies. Solid state approaches have the potential to fulfil these demands. Up to now the used processes and methods are not economical efficient scalable and the energy density is too low.

The objective within the project SOLID is the investigation of a solid state batteries based upon cost efficient production methods that are completely transferable to industrial scale respectively are already established in other sectors. The solid state approach enables one to use new cell concepts leading to a lower part of electro-chemical inactive materials and a lower cabling complexity. Starting from a material research for cathode- and electrolyte layers by the Fraunhofer ISC as well as an anode development by Applied Material solid state batteries in single layer format can be produced. Besides this, the Fraunhofer ISE investigates structuring of the electrical conductor and the cathode layer to reduce the intrinsic high resistances. Additionally LUNOVU develops novel laser-based methods for the crystallization behaviour of the cathode- and electrolyte layers. Coatema is going to transfer all methods to continuous processes or respectively Coatema is going to investigate the opportunity for an integration into a continuous process. The whole project is led by project coordinator Varta that is going to develop a new cell concept cooperating with all partners. Finally, the operational reliability of this solid state approaches is proven by a demonstrator.

The battery market is strongly dominated by Asian manufacturers. To participate in this market or even acquire a leadership it is important to execute basic research in the field of this future technologies. This project will create jobs along the whole supply chain, by the project lead of German small and medium size companies that use established German technologies.



01/2018 – 12/2020 – Supersmart

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Scale-Up of Printed Electronics Recyclable SMART materials

In day to day products, including labels and packaging, there is a rising consumer demand for smart products, that is to say, objects that are able to be part of a digital ecosystem. Embedding sensors and communications technologies while minimizing the environmental impact of these smart products is a key challenge for the future. The major way of achieving this is to work on the base materials of the electronics components to be embedded in, by providing organic materials instead of rare and toxic inorganic ones when applicable. That is the objective of the SUPERSMART project which will enable the direct printing on paper of sensors, displays and electronics instead of bulk conventional electronics devices. It will make the recyclability of such smart products easy. Lead by Arkema, a world-wide chemical actor, together with Arjowiggins, providing technical papers for printed electronics, leading technical organizations (CEA, FraunhoferInstitute, Joanneum Research), first-class universities (University de Bordeaux and Lisbon) and innovative SMEs (Coatema, Luquet & Duranton), the SUPERSMART project aims at scaling up printable smart materials for the smart and recyclable products of the future.



06/2017 – 5/2020 – Flex-G

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Development of R2R technologies for producing flexible facade elements with switchable energy transmissibility.

The joint project FLEX-G systematically investigates technologies for fabrication of translucent and transparent roof and facade elements with integrated opto-electronic devices, to allow dynamic switching of the total energy transmittance (g-value) of these elements. Therefore, flexible electrochromic layer stacks are directly applied on ETFE web surface in Roll-to-Roll coating processes. ETFE is a common material used for membrane roofs and facades in event halls, airports or railway stations. A second part of the project deals with technologies for direct integration of large-area flexible solar cells based on organic photovoltaics (OPV) into ETFE membrane elements. The project Flex-G contributes thus significantly to energy saving and energy harvesting technologies in buildings. Flex-G thereby supports the aim of the government to reduce the primary energy demand until 2050 to 50 % through these developments.



04/2017 – 03/2020 – SolGel-PV

solgel BMBF FKZ 0324151C

Multifunctional Sol-Gel layers for the photovoltaic industry.

In the SOLGEL-PV project nanoscale sol-gel layers for usage in solar cells layers are produced, deposited and structured. They shall be demonstrated in an innovative applications: (i) antireflex structure that uses the Mie-resonance for a better light coupling, (ii) at the backs contact of the first solar cel for a better optical performance and higher adhesion and (iii) as a conducting and adhesive connection layer for a cost efficient realization of tandem solar cells. The layers are deposited by in-line capable methods. The nanostructuring is executed in a roll-to-plate technology.

The project incorporates developments in the material science as well as in the regime of process techniques. Sol-gels will be produced by tailored synthesis for different prototype applications. Additionally, deposition and embossing processes for large scale applications are realized.

The following objectives for the three defined prototype applications are specified: Due to the embossed Mie-resonators in the sol-gels, better properties compared to an iso-textur shall be achieved. The sol-gel interlayer at the backside contact shall lead to a higher short-circuit current density of 0.5 mA/cm² higher than for an Al/Si contact due to the reduction of parasitic absorption. Simultaneously the adhesion will be high enough for a later cabling of the modules. With a connection layer for tandem solar cells a III-V wafer and a Si-Wafer shall be permanently connected to each other with a high transparency (>98 %) and a lower voltage loss (< 1mV).

The developed, innovative and cost efficient technologies as well as the higher energy yield are leading to a higher cost efficiency and brings the involved companies a unique selling point and thus a competitive advantage.



07/2017 – 06/2019 – iCoat

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Development and validation of novel slot-dies concepts for low-viscous inks.

In the iCoat project novel slot-dies for intermittent coating of low-viscous inks are developed and integrated into the „Advaned Multi coAting LInE“ (AMALIE) line at Holst Centre. To qualify these novel slot-dies, Perovskite solar cells are produced and analysed. The ultra-fast switching of the slot-dies is enabled by using piezo technology and will allow less material consumption and higher production yields. Thus the project offers further potential for lower production costs. The software integration within this project is executed by Verautomation.



01/2017 – 12/2019 – InTres

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Innovative support materials for optimizing current conductors within electrical storages.

To enable the decentralized storage of energy up to electro mobility technology, a continuous development of electrical storage is needed. The research is thereby focussing on the efficiency of electrical storages. On the one hand they must be cost efficient and on the other hand the durability and the performance need to be improved. Previously the research was mainly about cell chemistry. However, the conductive support materials have a crucial influence on the performance and cost of Lithium-Ions batteries.

Within the InTres project the performance of electrical storages based on Lithium-Ions technology shall be improved by a resource-saving application of innovative support materials. The objective is to replace the actual current conductors (Al- or Cu-foil) in the battery cell with 3-dimensional support materials (expanded metal, metal foams, metallic net) as well as to investigate their potential.

The consortium consists of research and industry partners and offers thus a complete supply chain of the battery production. Additionally, a broad know-how and an excellent infrastructure is present. This project has received funding from the European Regional Development Fund under grant agreement No EFRE-0800645.



12/2016 – 11/2019 – PowderSizing

powdersizing BMWT FKZ ZF4099702BL6

Process- and materialefficient production of thermoplastic-glass bicomponent fibers for the production of continuous-fiber-reinforced thermoplastic components

The mechanical properties of thermoplastic composites depend on the fibre volume content, moistening and distribution of the glass fibres and thus on the strength distribution. The theoretical performance limit is not completely fulfilled by already available composites based on hybrid yarns or film-stacking. In addition, the coating speed is limited to 100 m/min leading to a low economic efficiency. Therefore, new technologies are necessary to achieve the theoretical performance limit in real industrial processes such that the composites could also be used in aircraft engineering. Currently the semi-finished materials are mostly used in the automotive sector. The objective of this research project is the development of a coating system leading to a speed of 2,000 m/min, by which all filaments inside the composite are equally coated and the economic efficiency is increased significantly.



05/2016 – 03/2019 – HEA2D

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Producing and investigating applications of 2D nanomaterials.

2D materials embedded in production methods for a mass production have the potential to generate integrated and systematic product and production solution that are social, economic and ecological sustainable. By this the climate change and an environmental friendly and affordable energy supply are addressable and novel innovative solution can be elaborated. More and more applications in lab scale are showing the potential of this new material class. Nevertheless, the transfer into products fails due to the fragmented supply chain. Thus the material innovations are not leading to product innovations up to now.

Within the project HEA2D a complete supply chain consisting out of different deposition methods for 2D materials, a method for transferring plastic foils as well as the integration into plastic components in industry scale is developed. The results of this project are distributed by cooperation of the project partners to interested companies in North Rhine-Westphalia. By this even in an early stage of development suggestions and endusers can be integrated into the supply chain. Therefore, the platform of the professional group „Graphen und 2D-Materialien“ and the cluster „Kunststoffland NRW“ in North Rhine-Westphalia are used.



06/2016 – 06/2019 – Photon Flex

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Photonic process chain for producing flexible organic solar cells in a R2R process

The objective in the project PhotonFlex is the development and investigation of innovative technologies for a cost efficient and highly productive fabrication of flexible organic solar cells. Thereby the production of flexible solar cells based on a coating with active absorber should be transferred from the lab scale close to an industry scale production chain. The project focusses on the usage of laser based methods for a high dense series connection as well as on high efficiency laser based drying methods. Additionally, novel encapsulation methods based upon plastic laser welding are qualified for a high rate process.

Coatema thereby integrates new assembly groups for a laser based encapsulation into an existing machinery at the partner ILT. Besides a laser based beam welding a gap slit welding method are realised. Together with the partners these new methods are demonstrated and evaluated by organic photovoltaic elements.



01/2016 – 12/2018 – Pi-Scale

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Within Pi-Scale an European pilot line for production of flexible OLEDs is developed.

Within the project Pi-Scale already existing European infrastructures will be used to develop an „European flexible OLED pilot line“. This pilot line will be used in an open access mode. Thus customers can be supported during the whole supply chain by product design. In addition upscaling concepts for a flexible OLED production can be validated at system level. By this Pi-Scale closes the existing gap between the today available processes flexible OLEDs production in lab size on the one hand and the mass production on the other hand. Pi-Scale leads thus to a high efficiency production of OLEDs.



09/2008 – 08/2012 – Innoshade

innoshade innoshade eu

Innovative switchable shading components based on nanomaterials and hybrid electrochromic device configurations.

INNOSHADE is concerned with an innovative, nanocomposite-based switchable light transmittance technology developed previously for small sized objects. It constitutes a breakthrough in smart shading technology by overcoming common limitations of state-of-the-art electrochromic devices. INNOSHADE shall enable the low cost production of electrochromic shading appliances with lower energy consumption and faster response. The overall objective of the project is to scale up and study the underlying nanotechnology-based processes from laboratory to pilot line production, with the major goal to explore and extend the application potential by creating interest in several prospective user groups across sectors.

The procedures shall be implemented to establish pilot production lines for the individual device components as well as for their assembly to run-capable devices up to a size comparable to automotive sunroof dimensions. Cost reduction will be accomplished via high throughput manufacturing methods such as continuous Roll-to-Roll processing to achieve demonstrators meeting essential market and consumer requirements.

The work will be performed by a highly complementary, well-balanced consortium of 17 partners from 8 member states, 1 candidate state, and 1 third country, representing the entire value chain. The proposed research closely addresses main S&T, socio-economic and policy objectives of the NMP work programme (integration of disciplines, transformation to knowledge-intensive industry, improvement of competitiveness, high added value products), shows clear environmental benefits and contributes to Sustainable Development. Strong industrial participation (4 SMEs, 1 large enterprise, 5 partly multinational global players) reflects the high economic development perspectives of the project.



08/2011 – 10/2014 – Flexlas

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Highspeed-laser methods for producing fully integrated flexible solar cells

The aim of Flexlas is the development of a high speed laser process for the production of fully integrated flexible solar cells. For the project optics and processes are developed and structuring and production of a demonstrator are part of the test device.



11/2011 – 04/2014 – Fabrigen

fabrigen fabrigen eu

Fabric structures for solar power generation.

Within the Fabrigen project organic photovoltaic materials has been combined with tensile strength textiles to obtain solar power generating flexible textiles. These structures can be used as example for roofs and can feed sustainable power into the power supply system.



03/2012 – 02/2014 – Diginova

diginova diginova eu

Innovation for digital fabrication.

The aim of the Diginova Project (Innovation for Digital Fabrication) was the analysis of existing digital production methods and creation of a roadmap. This roadmap is going to show the further path of digital fabrication.



08/2011 – 02/2014 – ProLiBat

prolibat ziel2 efre de

Producibility of Lithium-Ions battery cells.

A complete laboratory research line for a pre industrial manufacturing of lithium-ion-batteries in a modular design will be established. The individual process steps (selection and modification of active materials, electrode coating, slitting, stacking and winding, electrolyte filling, sealing, formation) will be specified and studied. The processes will be optimized in order to increase the quality of the cells. The lab line will be used to develop new battery concepts with innovative materials and to change production steps together with manufacturing industry.



11/2013 – 10/2014 – REGAC

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High precision register control for Roll-to-Roll printed electronic.

In the REGAC project, the task is to develop and improve a high precision registration for R2R processed printed electronics. Next to the improvements of the camera system, improvements in the true running accuracy of the rollers are executed leading to an improved accuracy for the overall deposition.



09/2012 – 08/2016 – ML²

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MuliLayer MicroLab

MultiLayer MicroLab (ML²) will provide a design and manufacturing platform for the production of sophisticated devices which combine microfluidics, optics and microelectronics. ML2 devices will be compact devices with increased performance at lower prices while providing higher sensitivity compared to existing micro-nano-biosystem (MNBS). Efficient packaging method and fully automated production will lead to higher reproducibility, increased integration of bioactive components and higher intelligence of the devices.



01/2013 – 12/2016 – Smartonics

smartonics smartonics eu

Development of smart machines, tools and processes for the precision synthesis of nanomaterials with tailored properties for Organic Electronics.

Organic electronics (OE) is a rapidly emerging field that is expected to revolutionize conventional electronics, energy and photonic applications. Some of the most important OE applications include OPVs, e-paper, OLEDs for displays and lighting, sensors and RFIDs.

One target of the SMARTONICS project is the development of smart nanomaterials for organic electronics (polymer and small molecule films, plasmonic nanoparticles and super-barriers) by process and computational modelling optimization. Additionally smart Technologies (Roll-to-Roll printing and organic vapour phase deposition machines combined with precision sensing and laser tools and processes) are developed. Furthermore one target is the integration of smart Nanomaterials and Technologies in pilot lines for precision synthesis of nanomaterials and Organic Electronics devices, optimization, demonstration and evaluation for industrial applications.



01/2014 – 06/2017 – Eelicon

eelicon eelicon eu

Enhanced energy efficiency and comfort by smart light transmittance control

EELICON is the succession project to the INNOSHADE project. It aim is the production of electrochromic layers which are produced at the R&D centre of Coatema. Therefore a production line for electrochromic layers will be built and validated.



03/2015 – 08/2017 – Inline Fluorescenz Detektion

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Inline valuation of transparent substrate coatings by fluorescence detection.

The aim of this project is a novel, in-line detection method for quality validation of functional coatings on substrates or solids. The detection is based upon the fluorescence of organic colourants that are added to the coating solution at a negligible amount.



04/2011 – 03/2015 – 3D LightTrans

3dlighttrans 3dlighttrans eu

Large scale manufacturing technology for high-performance lightweight 3D multifunctional composites.

Textile reinforced polymer composites (TRPC) hold the promise for enhanced products featuring superior properties, such as light weight and high strength, with comparatively low material costs. This promising potential is nevertheless hindered by the lack of appropriate processing technologies to enable low-cost manufacturing of mass products with sufficient quality.

The objective of the 3DLightTrans project is to create a highly flexible manufacturing chain for low cost production of integral large scale 3D TRPC parts, based on innovative approaches for the individual processes and its integration in the complete supply chain. This will enable to shift TRPCs from its current position in cost intensive, small series niche markets -like aeronautics-, to broadly extended mass product applications not only in transportation, but also in health, energy, leisure and other key sectors.



05/2012 – 04/2015 – Clean4Yield

C4Y c4y eu

Contamination and defect control for increased yield for large scale R2R production of OPV and OLED.

The Clean4Yield project aims to ensure high enough yields for cost-effective organic electronics manufacturing. The project partners will develop new technologies for inspecting, cleaning and repairing moving foils, and detecting and preventing defects in large-scale Roll-to-Roll production of OLEDs and OPVs.

The Clean4Yield project will work to develop new technologies capable of inspecting moving foils for micro- and nanoscale dust particles and defects, and for cleaning/repairing layers as necessary. It will also explore techniques for preventing dust particles reaching the foil in Roll-to-Roll environments. The project is coordinated by the Holst Centre/TNO and has sixteen members (multi-national companies, small-to-medium enterprises, universities and research organizations).



11/2012 – 10/2014

Thime thime eu

Thin film measurements on organic photovoltaic (OPV) layers.

Development of thin layers measurement system for organic photovoltaic layer to achieve a higher quality standard. By this a more cost efficient production is achieved.

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