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Gupta, D.K. (author), Barink, M. (author), Langelaar, M. (author)
Concentrated photovoltaics (CPV) has recently gained popularity due to its ability to deliver significantly more power at relatively lower absorber material costs. In CPVs, lenses and mirrors are used to concentrate illumination over a small solar cell, thereby increasing the incident light by several folds. This leads to non-uniform...
article 2018
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van Deelen, J. (author), Tezsevin, Y. (author), Barink, M. (author)
Most research of texturization of solar cells has been devoted to Si based cells. For perovskites, it was assumed that texturization would not have much of an impact because of the relatively low refractive indexes lead to relatively low reflection as compared to the Si based cells. However, our optical modeling shows that a significant gain in...
article 2017
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van Deelen, J. (author), Barink, M. (author)
Metallization of the front contact can increase the conductivity. We show the optical benefit by combining nanowire with a texture of the thin film stack. The parallel nanowires are placed in crevices of a texture in the optical model. Texturization reduces the reflection of both the stack and the nanowire. For a period of 500 nm, the reflection...
conference paper 2017
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van Deelen, J. (author), Omar, A. (author), Barink, M. (author)
The conductivity of transparent front contacts can be improved by patterned metallic nanowires, albeit at the cost of optical loss. The associated optical penalty can be strongly reduced by texturization of the cell stack. Remarkably, the nanowires themselves are not textured and not covered in our design. This was shown by optical modeling...
article 2017
document
van Deelen, J. (author), Barink, M. (author)
Innovation in the field of thin-film cells, in addition to economy of scale and the manufacturing learning curve, is an important element in keeping the price of this technology competitive. Most papers on these cells focus on their technology; however, the economic potential of the technology is also important. Of even greater significance, a...
article 2017
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van Deelen, J. (author), Tezsevin, Y. (author), Omar, A. (author), Barink, M. (author)
We show the results of nanotextured device designs combined with carefully placed nanogrids in order to minimize optical losses. Finite element method (FEM) based optical modeling indicates that the reflection of both the layer stack and the metal is diminished by the proposed configuration in which the metallic nanowires at the front of a...
article 2017
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van Deelen, J. (author), Tezsevin, Y. (author), Barink, M. (author)
The trade-off between transmittance and conductivity of the front contact material poses abottleneck for thin film solar panels. Normally, the front contact material is a metal oxide and the optimal cell configuration and panel efficiency were determined for various band gap materials, representing Cu(In,Ga)Se2 (CIGS), CdTe and high band gap...
article 2016
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Pakazad, S.K. (author), Barink, M. (author), Arutinov, G. (author), Hendriks, R. (author), Kusters, R. (author), Cauwe, M. (author), van den Brand, J. (author)
Soldering of packaged electronic components using industry standard Sn-Ag-Cu (SAC) lead-free solders on low-cost foils, which are often the substrate of choice for flexible electronics, is challenging. This is mainly originating from the fact that the reflow temperatures of these solder alloys are normally higher than the maximum processing...
conference paper 2016
document
Barink, M. (author), Mavinkurve, A. (author), Janssen, J. (author)
This study made an attempt to predict the temperature-dependent moisture diffusion of an epoxy molding compound with 3 different diffusion models: Fickian, dual stage and Langmuir diffusion. The Langmuir model provided the best prediction of the moisture diffusion when simulating the input experiments. Beyond the temperature range of the input...
article 2016
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Gupta, D.K. (author), Langelaar, M. (author), Barink, M. (author), van Keulen, F. (author)
Free-form solar cells are cells of unconventional shapes (e.g. hexagonal, leaf-shaped etc). Their flexible shape adds to the aesthetics of the surroundings as well as allows to place them over objects where conventional solar cells might not fit. Evidently, these cells need to be efficient as well, and one of the important factors that controls...
article 2016
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Tapaninen, O. (author), Myohanen, P. (author), Majanen, M. (author), Sitomaniemi, A. (author), Olkkonen, J. (author), Hildenbrand, V. (author), Gielen, A.W.J. (author), Mackenzie, F.V. (author), Barink, M. (author), Smilauer, V. (author), Patzak, B. (author)
This paper presents a test case for coupling two physical aspects of an LED, optical and thermal, using specific simulation models coupled through an open source platform for distributed multi-physics modelling. The glue code for coupling is written with Python programming language including routines to interface specific simulation models. This...
conference paper 2016
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Gupta, D.K. (author), Barink, M. (author), Galagan, Y. (author), Langelaar, M. (author)
Free-form solar cells expand solar power beyond traditional rectangular geometries. With the flexibility of being installed on objects of daily use, they allow making better use of available space and are expected to bring in new possibilities of generating solar power in the coming future. In addition, their customizable shape can add to the...
article 2016
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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
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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
document
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
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