Searched for: author%3A%22Theelen%2C+M.J.%22
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de Amorim Soares, G. (author), Carolus, J. (author), Daenen, M. (author), Masolin, A. (author), Birrenbach, T. (author), Gerber, A. (author), Wrigley, A. (author), Henzel, J. (author), Roosen, D. (author), Meuris, M. (author), Theelen, M.J. (author)
A round robin test was carried out in four PV laboratories to compare accelerated lifetime testing. Twenty commercial non-packaged CIGS solar cells of similar performance were spread and exposed to damp heat con-ditions (85 ◦C and 85% RH) for approximately 500 h. Their JV performance was monitored during the damp heat exposure. After the test,...
article 2021
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Theelen, M.J. (author), Hagedoorn, C. (author), Götz-Köhler, M. (author), Weeber, A. (author), Neugebohn, N. (author)
Oxide/metal/oxide (OMO) layer stacks are promising replacements for conventional transparent conductive oxides in thin-film photovoltaics. They can provide colouration of the solar cells by adjusting their thickness to optimised optical resonances. Green OMO multistacks were deposited on glass by subsequent sputtering of aluminium doped zinc...
article 2021
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Shi, W. (author), Theelen, M.J. (author), Gevaerts, V.S. (author), Illiberi, A. (author), Barreau, N. (author), Butterling, M. (author), Schut, H. (author), Egger, W. (author), Dickmann, M. (author), Hugenschmidt, C. (author), Zeman, M. (author), Bruck, E. (author), Eijt, S.W.H. (author)
Positron annihilation depth-profiling is used as an innovative tool to monitor the evolution of vacancy defects in two series of ZnO:Al transparent conductive oxide (TCO) layers for Cu(In,Ga)Se2 (CIGS) solar cells under accelerated degradation at 85 °C/85% relative humidity. The first series of ZnO:Al layers are deposited directly on flat glass...
article 2018
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Theelen, M.J. (author), de Graaf, F. (author), Daume, F. (author), Barreau, N. (author), Vroon, Z.A.E.P. (author), Zeman, M. (author)
Degradation rates and mechanisms for molybdenum back contacts and ZnO:Al front contacts exposed to damp heat were obtained from literature and experiments. It was found that molybdenum back contacts with a higher density and covered by a MoSe2 film are more stable than their low density, bare counterparts. For ZnO:Al front contacts various...
conference paper 2018
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Theelen, M.J. (author), Schiepers, E. (author), Vermeer, J. (author), Falk, S. (author), Hovestad, A. (author), Steijvers, H.L.A.H. (author), van der Vleuten, M. (author), Bakker, K. (author), Dörenkämper, M. (author), Linden, H. (author)
Two step atmospheric pressure processing of Cu(In,Ga)(Se,S)2 absorbers is an industrially attractive technology to produce CIGS thin film modules. For this procedure, absorber sulfurization is required to increase the Voc and thus the efficiency of the solar cells. Raman spectroscopy was used to qualitatively identify the presence of sulfur on...
conference paper 2018
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de Amorim Soares, G. (author), Theelen, M.J. (author), Roosen, D. (author), Masolin, A. (author), Franssen, L. (author), Daenen, M. (author), Carolus, J. (author), Meuris, M. (author), Birrenbach, T. (author), Gerber, A. (author), Wrigley, A. (author)
conference paper 2017
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Flammini, M.G. (author), Debernardi, N. (author), Le Ster, M. (author), Dunne, B. (author), Bosman, J. (author), Theelen, M.J. (author)
Nonencapsulated CIGSSe solar cells, with a silver grid, were exposed to different temperatures for various periods in order to measure the effect of the heat exposure in CIGSSe modules. The heat treatment time and temperature were varied during the experiments, which were executed at atmospheric conditions. In all the cases, after reaching a...
article 2016
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Theelen, M.J. (author)
Investors require a guarantee of a minimum lifetime for PV installations. It is tempting to provide such a guarantee for a longer lifetime simply by specifying test conditions that are more and more severe. In this paper it is argued that, with a more detailed understanding of the basic mechanisms determining cell material behaviour under...
article 2016
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Theelen, M.J. (author)
Large scale commercial introduction of CIGS photovoltaics (PV) requires modules with low costs, high efficiencies and long and predictable lifetimes. Unfortunately,knowledge about the lifetime of CIGS PV is limited, which is reflected in the results of field studies: degradation rates varying from 0% to about 4% per year have been observed....
doctoral thesis 2015
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Theelen, M.J. (author), Barreau, N. (author), Daume, F. (author), Steijvers, H.L.A.H. (author), Hans, V.O. (author), Liakopoulou, A. (author), Vroon, Z.A.E.P. (author), Zeman, M. (author)
An hybrid degradation setup, in which humidity, temperature and illumination are used in order to accelerate degradation of CIGS, has been developed. This setup consists of a climate chamber, which can vary the temperature and humidity. Furthermore, an area of 80x80 cm2 is illuminated, which allows both the study of light induced behvaior and...
conference paper 2014
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Theelen, M.J. (author), Polman, K.J. (author), Tomassini, M. (author), Barreau, N. (author), Steijvers, H.L.A.H. (author), van Berkum, J. (author), Vroon, Z.A.E.P. (author), Zeman, M. (author)
The impact of the molybdenum (Mo) microstructure and selenisation on degradation caused by 105hour exposure to standard 'damp heat' has been investigated. Degradation effects were already observed without magnification after several hours of exposure. The degradation resulted in large volume expansion due to the formation of a thick non...
article 2014
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Theelen, M.J. (author), Foster, C. (author), Dasgupta, S. (author), Vroon, Z.A.E.P. (author), Barreau, N. (author), Zeman, M. (author)
Aluminum doped zinc oxide (ZnO:Al) layers were exposed to the atmospheric gases carbondioxide (CO2), oxygen (O2), nitrogen (N2) and air as well as liquid H2O purged with these gases, in order to investigate the chemical degradation behavior of these layers. The samples were analyzed by electrical, compositional and optical measurements before,...
conference paper 2014
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Theelen, M.J. (author), Habets, D. (author), Staemmler, L. (author), Winands, H. (author), Bolt, P.J. (author)
Organosilicon coatings provide good optical and mechanical properties and are excellent candidates for the modification of the surface energy of polymers. These coatings can be deposited by plasma polymerization of hexamethyldisiloxane (HMDSO) under atmospheric pressure and at room temperature. The resulting films can range from soft,...
article 2012
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Theelen, M.J. (author), Steijvers, H.L.A.H. (author), Vroon, Z.A.E.P. (author), Tomassini, M. (author), Barreau, N. (author), Zeman, M. (author)
conference paper 2012
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Illiberi, A. (author), Simons, P.J.P.M. (author), Kniknie, B. (author), van Deelen, J. (author), Theelen, M.J. (author), Zeman, M. (author), Tijssen, M. (author), Zijlmans, W. (author), Steijvers, H.L.A.H. (author), Habets, D. (author), Janssen, A.C. (author), Beckers, E.H.A. (author)
article 2012
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Scorticati, D. (author), Skolski, J.Z.P. (author), Römer, G.R.B.E. (author), Huis in 't Veld, A.J. (author), Workum, M. (author), Theelen, M.J. (author), Zeman, M. (author)
In this work, we studied the feasibility of surface texturing of thin molybdenum layers on a borosilicate glass substrate with Ultra-Short Laser Pulses (USLP). Large areas of regular diffraction gratings were produced consisting of Laserinduced periodic surface structures (LIPSS). A short pulsed laser source (230 fs-10 ps) was applied using a...
conference paper 2012
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Bolt, P.J. (author), Theelen, M.J. (author), Habets, D. (author), Winands, G.J.J. (author), Staemmler, L. (author)
For the modification of the surface energy of polymers, organosilicon coatings provide good optical and mechanical properties and are excellent candidates for the modification of the surface energy of polymers. These coatings can be deposited by plasma polymerization of hexamethyldisiloxane (HMDSO) under atmospheric pressure and at room...
article 2011
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Theelen, M.J. (author), Kouijzer, S. (author), Timmer, K. (author), Winands, G.J.J. (author), Poodt, P.W.G. (author), TNO Industrie en Techniek (author)
conference paper 2010
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van Deelen, J. (author), Rendering, H. (author), 't Mannetje, H.H. (author), Huis in 't Veld, A.J. (author), Theelen, M.J. (author), Vroon, Z.A.E.P. (author), Poodt, P.W.G. (author), Hovestad, A. (author)
Transparent conductive oxides (TCOs) are widely used in optoelectronic applications and are a vital part in thin film solar cells. However, these materials have some drawback, such as brittleness and a maximum transmittance for a certain sheet resistance. Alternative materials, such as metal foils, nanowires and organic conductors are discussed...
conference paper 2010
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Bolt, P.J. (author), Winands, G.J.J. (author), Theelen, M.J. (author), Hovestad, A. (author), TNO Industrie en Techniek (author)
Integration of multiple functions in single components is pursued in order to manufacture at less cost smaller and smarter polymer micro devices. A method to achieve this is surface activation, i.e. fully or patterned changing of the surface properties. Examples are moulded interconnect devices with conductive surface tracks and lab-on-chip...
conference paper 2010
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