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Barink, M. (author), Goorhuis, M. (author), Giesen, P. (author), Furthner, F. (author), Yakimets, I. (author), TNO Industrie en Techniek (author)
Flexible substrates (polymers) for plastic electronic products are far less stable to environmental factors, like heat and moisture, than currently used non-flexible substrates (silicon). This introduces problems during the lithography process of these products. This study presents a thermo-mechanical model of PEN foil; an organic material often...
conference paper 2009
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Gielen, A.W.J. (author), Barink, M. (author), van de Brand, J. (author), van Mol, A.M.B. (author), TNO Industrie en Techniek (author)
In order to study the electrical-thermo-mechanical interaction in OLEDs, finite element based simulation models were developed. Two dimensional models were used to study detailed design effects, such as the location of the bus bars, while a three dimensional model was used to study the effect of differences between the two and three dimensional...
conference paper 2009
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Harkema, S. (author), Mennema, S. (author), Barink, M. (author), Rooms, H.C.A. (author), Wilsona, J.S. (author), van Mol, A.M.B. (author), Bollen, D. (author), TNO Industrie en Techniek (author)
We demonstrate the feasibility of white organic light-emitting diodes that exclude the transparent conductor indium-tinoxide. Instead, a highly conductive Orgacon™ PEDOT:PSS material in combination with a metal support structure is used as transparent anode and hole-injection layer. The PEDOT:PSS exhibits a conductivity of 460±20 S/cm and a work...
conference paper 2009
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van den Berg, D. (author), Barink, M. (author), Giesen, P. (author), Meinders, E.R. (author), Yakimets, I. (author), TNO Industrie en Techniek (author)
Thin polymer substrates are promising materials for flexible electronics with many advantages. However, the dimensional stability of polymer substrates is low. Nowadays, this is overcome by laminating polymer substrates onto a rigid carrier. Nevertheless, carrier-less processing will be a foreseen next step for future manufacturing of plastic...
article 2010
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Barink, M. (author), van den Berg, D. (author), Yakimets, I. (author), Meinders, E.R. (author), TNO Industrie en Techniek (author)
The challenge of lithographic production of electronic circuitry on polymer foil is that deformations approaching the feature sizes of the circuitry can cause considerable overlay problems and thereby malfunctioning of the devices. The substrate foil is susceptible to several types of deformations. Accurate prediction of these deformations is of...
conference paper 2010
document
van den Berg, D. (author), Barink, M. (author), Giesen, P. (author), Meinders, E.R. (author), Yakimets, I. (author)
Thin polymer substrates are promising materials for flexible electronics with many advantages. However, the dimensional stability of polymer substrates is low. Nowadays, this is overcome by laminating polymer substrates onto a rigid carrier. Nevertheless, carrier-less processing will be a foreseen next step for future manufacturing of plastic...
article 2011
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Barink, M. (author), van den Berg, D. (author), Yakimets, I. (author), Giesen, P. (author), van Dommelen, J.A.W. (author), Meinders, E.R. (author)
A numerical model was developed to simulate the micro-deformations of a polymeric substrate due to lithographic processing of different layers of a transistor-like structure. The results of the model were validated with the results from experiments. The model, a mechanical-thermal-hygroscopic model, takes into account the dimensional effects of...
article 2011
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Galagan, Y.O. (author), Coenen, E.W.C. (author), Sabik, S. (author), Gorter, H.H. (author), Barink, M. (author), Veenstra, S.C. (author), Kroon, J.M. (author), Andriessen, H.A.J.M. (author), Blom, P.W.M. (author)
ITO-free organic solar cells with ink-jet printed current collecting grids and high conducting PEDOT:PSS as composite anode are demonstrated. Inkjet printed current collecting grids with different cross-sectional are as have been investigated. The effect of the width and height of the gridlines and busbars has been measured and modeled by direct...
article 2012
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Barink, M. (author), Harkema, S. (author)
In this study, an analytical solution for the current distribution of a large-area organic light emitting diodes (OLEDs) with parallel equidistant gridlines is derived. In contrast to numerical methods, this analytical solution allows for a very quick scan of the OLED design space, even for very large OLEDs, providing insight how different model...
article 2012
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Kroon, J.M. (author), Veenstra, S.C. (author), Andriessen, R. (author), Galagan, Y. (author), Blom, P. (author), Coenen, E.W.C. (author), Gorter, H. (author), Sabik, S. (author), Barink, M. (author)
ITO-free organic solar cells with ink-jet printed current collecting grids and high conducting PEDOT:PSS as a composite anode are demonstrated. Inkjet printed current collecting grids with different cross- sectional areas have been investigated. The effect of the width and height of the grid lines and busbars has been measured and modeled by...
article 2012
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van Deelen, J. (author), Klerk, L.A. (author), Barink, M. (author), Rendering, H. (author), Voorthuijzen, P. (author), Hovestad, A. (author)
The trade-off between transparency and conductivity in transparent conductors used in optoelectronic devices is a major bottleneck towards higher device performances. Grid deposition on transparent conductive oxides was demonstrated using electrochemical deposition, which has the advantage of a high aspect ratio of 0.45 and the possibility to...
article 2013
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Gupta, D.K. (author), Langelaar, M. (author), van Keulen, F. (author), Barink, M. (author)
This work introduces the application of Topology Optimization (TO) to design optimal front metallization patterns for solar cells and increase their power output. A challenging aspect of the solar cell electrode design problem is the strong nonlinear relation between the active layer current and the electrical potential. The power output of a...
conference paper 2014
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van Deelen, J. (author), Klerk, L. (author), Barink, M. (author)
There is a gap in efficiency between record thin film cells and mass produced thin film solar panels. In this paper we quantify the effect of monolithic integration on power output for various configurations by modeling and present metallization as a way to improve efficiency of solar panels. Grid design and finger dimension optimization was...
article 2014
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van Deelen, J. (author), Klerk, L.A. (author), Barink, M. (author), Rendering, H. (author), Voorthuijzen, P. (author), Hovestad, A. (author)
The trade-off between transparency and conductivity in transparent conductors used in optoelectronic devices is a major bottleneck towards higher device performances. Grid deposition on transparent conductive oxides was demonstrated using electrochemical deposition, which has the advantage of a high aspect ratio of 0.45 and the possibility to...
article 2014
document
Gupta, D.K. (author), Langelaar, M. (author), Barink, M. (author), van Keulen, F. (author)
Optimal front electrode design is one of the approaches to improve the performance of solar cells. This work introduces the application of topology optimization (TO) to design complex front metallization patterns for solar cells. TO optimizes the distribution of electrode material on the front surface of the solar cell, such that its power...
conference paper 2014
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van Deelen, J. (author), Frijters, C. (author), Suijlen, M. (author), Barink, M. (author)
The effect of the front contact characteristics on the working of monolithically integrated thin film solar panels and effective ways of improving the front contact are discussed. Efficiencies were calculated for various cell lengths and scribing areas in between cells (interconnection dead zone widths). The application of a metallic grid was...
article 2015
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van Baars, G. (author), Smeltink, J. (author), van der Werff, J. (author), Limpens, M. (author), Barink, M. (author), van den Berg, D. (author), de Vreugd, J. (author), Witvoet, G. (author), Galaktionov, O.S. (author)
This article presents developments of freeform mechatronics concepts, enabled by industrial Additive Manufacturing (AM), aiming at breakthroughs for precision engineering challenges such as lightweight, advanced thermal control, and integrated design. To assess potential impact in future applications, representative cases have been considered....
conference paper 2015
document
Gupta, D.K. (author), Langelaar, M. (author), Barink, M. (author), van Keulen, F. (author)
This paper presents the application of topology optimization (TO) for designing the front electrode patterns for solar cells. Improving the front electrode design is one of the approaches to improve the performance of the solar cells. It serves to produce the voltage distribution for the front surface such that the current flow through the solar...
article 2015
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van Deelen, J. (author), Barink, M. (author), Klerk, L. (author), Voorthuijzen, P. (author), Hovestad, A. (author)
Modeling indicates a potential efficiency boost of 17% if thin-film solar panels are featured with a metallic grid. Variations of transparent conductive oxide sheet resistance, cell length, and grid dimensions are discussed. These parameters were optimized simultaneously to obtain the best result. Moreover, the power output as a function of...
article 2015
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van Deelen, J. (author), Barink, M. (author), Klerk, L. (author), Voorthuijzen, P. (author), Hovestad, A. (author)
Most development work in the laboratory is dedicated to efficiency enhancements at the cell level; improvements in efficiency can lead to higher cost-competitiveness of PV. However, the cost of panel manufacturing is an important aspect as well. For CIGS panels the deposition of the active layer is an important part of the cost, and decreasing...
article 2015
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