PolyIC GmbH and Co. KG

Furth im Wald, Germany

PolyIC GmbH and Co. KG

Furth im Wald, Germany
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Jovanov V.,Jacobs University Bremen | Yumnam N.,Jacobs University Bremen | Muller A.,Jacobs University Bremen | Gruber M.,Jacobs University Bremen | And 2 more authors.
Journal of Physical Chemistry C | Year: 2017

A technique for determining the material-specific morphology of a polymer-fullerene blend is presented. This technique is applied to solution processed bulk-heterojunction organic solar cells with different weight ratios of polymer-fullerene blend using the PTB7:PCBM material system. Optical and electrical characterizations show that the light absorption increases for larger polymer (PTB7) content, while the fill factor of the fabricated solar cells is improved for larger fullerene (PCBM) content. The material-specific morphologies of polymer-fullerene bulk-heterojunctions are measured by employing AFM phase imaging. The measured AFM phase images reveal that fullerene material forms flake-like clusters which are embedded in the polymer network. The size of the flakes is increasing with larger content of fullerene material. By correlating the optical and electrical properties with the measured bulk-heterojunction morphologies, the relation between bulk-heterojunction structure and solar cell performances is discussed. (Graph Presented). © 2017 American Chemical Society.

Worle J.,PolyIC GmbH and Co. KG | Rost H.,PolyIC
Kunststoffe International | Year: 2010

PolyIC has developed a new process for electrode production, which makes it possible to produce high-resolution, thin conductor tracks by a large scale roll-to-roll operation. By producing high-resolution structures in μm scale on thin flexible PET films, not only sufficient conductivity but also sufficient layer transparency can be achieved. Transparency and conductivity can be adjusted to specific customer requirements by adjusting the area occupancy ratio of the conductive material. They do not need to be transparent themselves, since the necessary light transmission is achieved by the high-resolution structuring. This means that the conductive structure occupies only a fraction of the surface, which allows light impermeable but highly conductive materials such as silver or copper to be used. Through careful adjustment of the process parameters, resistivity values of 0.4 to 1 ohm/sq can be achieved with the conductive materials used. The consistently high transparency achievable over a wide wavelength range is another advantage of this new technology.

Ludwig K.,PolyIC GmbH and Co. KG | Rost H.,PolyIC
Kunststoffe International | Year: 2011

Interactive optical labels that can be activated by radio waves are an example of innovative printed electronics with high innovation potential. Such smart labels will in future be used in very diverse areas, such as marketing, brand protection and games with high customer benefit.

Ganesan R.,TU Darmstadt | Krumm J.,PolyIC GmbH and Co. KG | Ludwig K.,PolyIC GmbH and Co. KG | Glesner M.,TU Darmstadt
Solid-State Electronics | Year: 2014

A VCO-based ADC is a time-based ADC architecture that is highly digital with regard to its composition. In this paper, we analyze the performance of an organic voltage-controlled oscillator (VCO) employing different delay elements and investigate their suitability for use in a VCO-based analog-to-digital converter (ADC). An equation to calculate the theoretical limit of the resolution of the VCO-based ADC from the voltage versus frequency characteristics of the VCO was formulated. Using this equation we analysed various VCO architectures to realize the VCO-based ADC. We also investigated the impact of jitter and 1/f noise on the performance of the ADC. We have employed a ring oscillator based VCO in our design. The investigated single-ended delay elements were analyzed with respect to the linearity in their voltage versus frequency characteristics. This measure of linearity governs the resolution of the VCO and the VCO being the critical part of a VCO-based ADC, determines the maximum possible resolution of the whole VCO-based ADC. The resolution of all the investigated delay cells were calculated. Based on these results it was found out that the diode-load inverter delay cell is the most promising option to realize the VCO-based ADC. For such a VCO-based ADC using diode-load inverter delay stages, the measured results show that a maximum possible resolution of 5.8 bits can be achieved. In addition to the diode-load inverter based VCO, we also measured the VCO circuit using cut-off load inverter delay stages. The OTFTs use poly-3-hexylthiophene (P3HT) as the P-type semiconductor. Furthermore, the circuits were fabricated in a clean-room process that is compatible with printing processes for mass production. © 2013 Elsevier Ltd. All rights reserved.

Ganesan R.,TU Darmstadt | Krumm J.,PolyIC GmbH and Co. KG | Pankalla S.,TU Darmstadt | Ludwig K.,PolyIC GmbH and Co. KG | Glesner M.,TU Darmstadt
European Solid-State Circuits Conference | Year: 2013

We demonstrate an organic smart label electronic system using p-type organic thin film transistors (OTFT) for temperature sensing applications. The electronic label consists of all organic temperature sensor, memory, logic and interface circuits and detects whether the critical temperature threshold value has been exceeded and records the data digitally in write-once-read-many (WORM) form that can be transmitted to a reader through wireless communication. A comparator is used to interface the sensor to the logic part. The logic circuit block processes and bundles the sensor information along with the necessary additional information that is required for a successful wireless transmission. We have demonstrated the operation of the reported organic smart label system using a silicon based modulator/rectifier circuit for RF communication. The organic logic circuit was built using standard cell design approach with approximately 180 p-type OTFTs. All the circuits were operated with a V DD of -20 V. © 2013 IEEE.

Rost H.,PolyIC GmbH and Co. KG | Ludwig K.,PolyIC GmbH and Co. KG
Coating International | Year: 2014

Printed electronics - i.e. the production of electronic components and products by roll-to-roll processes - has left the laboratory stage and shows first successful applications on the mass market. PolylCs first product of this type, i.e. conductive and transparent films on PET base - PolyTC® - paves the way for practical, high-volume applications, with clear advantages both in terms of product design and in terms of the integration possibilities which are shown in the target product.

Zipperer D.,PolyIC GmbH and Co. KG
International Conference on Digital Printing Technologies | Year: 2012

Touch sensors have replaced keys and controls in many devices and gadgets. In combination with displays very intuitive control possibilities have been created. The most common principles to sense touch are resistive systems and projected-capacitive systems (mutual-capacitance and self-capacitance). These approaches are all based on electrical conductivity of transparent layers. In this paper a new method to attain very thin and flexible touch sensors manufactured by a high resolution roll-to-roll production process on plastic substrate is presented. The conductivity is based on a metallic grid, occupying only a small fraction of the surface and due to structure sizes down to 10μm appearing transparent. Using two layers of such a transparent conductive film (PolyTC) we can process touch sensors in a resistive or in the projected-capacitive setups, being capable of multi-touch sensing. These touch sensors are compatible with conventional image processing controllers. They are flexible and have a total thickness of less than 200μm.

Schewe M.,PolyIC GmbH and Co. KG | Rost H.,PolyIC GmbH and Co. KG
Kunststoffe International | Year: 2012

Flexible, optically transparent films are required for applications such as displays, ultra-thin heating elements, and operating controls in automobiles. They must have a coating that possesses the maximum-possible electrical conductivity.Nowadays, polyester-based plastic films coated with indium tin oxide (ITO) are often used, but these are technically difficult and expensive to structure prior to use [1]. The limited conductivity and relative fragility of ITO renders it less suitable for applications involving large and, especially, curvaceous surfaces. © Carl Hanser Verlag, Munich.

Zipperer D.,PolyIC GmbH and Co. KG
International Conference on Digital Printing Technologies | Year: 2011

The application of roll-to-roll printing processes for the fabrication of polymer electronics on flexible films enables the mass production of low-cost electronic circuits and components. Being produced by the successive application of thin layered functional structures on flexible polyester film, the products end up being thin and flexible themselves. Example applications are discussed, all manufactured in roll-to-roll printing processes. A 13.56 MHz radio frequency rectifier was combined with an electrochromic display into a "smart object" that reveals the display information when brought into an electromagnetic field of an activator unit. Transparent conductive films on flexible substrates were realized by a high resolution roll-to-roll production process with structure sizes down to 10μm. They are suitable to replace indium tin oxide in applications such as touch screen displays. ©2011 Society for Imaging Science and Technology.

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