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Kroon, J.M. (author), Verhees, W.J.H. (author), Winter, S. (author), Olson, D. (author), Zimmermann, B. (author), Wuerfel, U. (author), Durrant, J.R. (author), Sapkota, B (author), Krebs, F.C. (author), Roca, F. (author), Gevorgyan, A.S. (author), Zubillaga, O. (author), Vega de Seoane, J.M. (author), Machado, M. (author), Alturk Parlak, E. (author), Tore, N. (author), Voroshazi, E. (author), Aernouts, T. (author), Mullejans, H. (author), Bardizza, Giorgio (author), Taylor, N. (author), Morvillo, P. (author), Minarini, C. (author), Castro, F.A. (author), Cros, S. (author), Lechene, B. (author), Trigo, J.F. (author), Guillen, C. (author), Herrero, J. (author), Veit, C. (author), Tuladhar, P.S. (author), Rousa, S. (author), Valimaki, M. (author), Hinrichs, V. (author), Cowan, S.R. (author), Sommer-Larsen, P. (author)This study addresses the issue of poor intercomparability of measurements of organic photovoltaic OPV)devices among different laboratories. We present a round robin performance testing of novel OPV devices among 16 laboratories, organized within the framework of European Research Infrastructure Project (SOPHIA) and European Energy Research...article 2014
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van `t Veen, W.H. (author), Vermeulen, A.T. (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author), Zahniser, M.S. (author)A quantum cascade laser spectrometer was evaluated for eddy covariance flux measurements of CH4 and N2O using three months of continuous measurements at a field site. The required criteria for eddy covariance flux measurements including continuity, sampling frequency, precision and stationarity were examined. The system operated continuously at...article 2007
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Kroon, J.M. (author), Bakker, N.J. (author), Wadman, S.H. (author), Lutz, M. (author), Spek, A.L. (author), van Klink, G.P.M. (author), va. Koten, G. (author)Cyclometalated ruthenium complexes of [Ru(C^N^N) (N^N^N)] configuration are a promising new class of molecular sensitizers for dye-sensitized solar cells, as a result of their broad and red-shifted visible absorption in comparison to the analogous [Ru(N^N^N)2] type coordinative complexes.article 2007
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Hensen, A. (author), Kroon, P.S. (author), Schrier, A.P. (author), Hendriks, D.M.D. (author), Jacobs, C.M.J. (author), Jacobs, A.F.G. (author), Bosveld, F.C. (author), Moors, E.J. (author), Nol, L. (author), Veenendaal, E.M. (author)An intercomparison is made of the Net Ecosystem Exchange of CO2, NEE, for eight Dutch grassland sites: four natural grasslands, two production grasslands and two meteorological stations within a rotational grassland region. At all sites the NEE was determined during at least 10 months per site, using the eddy-covariance (EC) technique, but in...article 2007
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Kroon, J.M. (author), Veenstra, S.C. (author), Loos, J. (author)This paper gives an overview of the status of photovoltaic devices based on blends of semiconducting polymers. The polymer blends form the bulk heterojunction in these photovoltaic devices. The fundamental mechanisms governing the performance of these devices are discussed as well as the specificities of these all-polymer solar cells. The...article 2007
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Kroon, J.M. (author), Lenzmann, F.O. (author)This review describes recent advances in the research on dye-sensitized solar cells. After a brief discussion of the general operation principles and a presentation of record efficiencies, stability data and key technology drivers, current trends will be reviewed. The focus of this review is on materials development (sensitizers, nanostructured...article 2008
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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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Kroon, J.M. (author), Lenzmann, F.O. (author), Krebs, F.C. (author), Sondergaard, R.R. (author), Espinosa, N. (author), Ryley, S. (author), Angmo, D. (author), Hosel, M. (author), Huss, D. (author), Dafinger, S. (author), Gritsch, S. (author), Jorgensen, M. (author)Organic photovoltaic modules have been evaluated for their integration in mobile electronic applications such as a laser pointer. An evaluation of roll-to-roll processed indium and silver free polymer solar cells has been carried out from di?erent perspectives: life cycle assessment, cost analysis and layer quality evaluation using inline...article 2013
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Kroon, J.M. (author), Bende, E.E. (author), Verhees, W.J.H. (author), Slooff, L.H. (author), Veenstra, S.C. (author), Cobussen - Pool, E.M. (author), Brockholz, B. (author)Polymer solar cells offer a promising low cost alternative in photovoltaics if the expensive ITO electrode can be omitted. Recently an alternative based on highly conductive PEDOT:PSS in combination with current collecting grids was developed.1 Electrical modeling is carried out to optimize the grid pattern in these polymer solar cells. The...article 2013
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de Boer, A. (author), Kluft, C. (author), Kroon, J.M. (author)The influence of changes in liver blood flow on the clearance of rt-PA was studied both in healthy subjects and in a perfused rat liver model. Liver blood flow in healthy subjects was documented indirectly by the clearance of indocyanine green (ICG). Exercise reduced liver blood flow on average by 57% with a 95% confidence interval (95% CI)...article 1992
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de Jong, Z. (author), Munneke, M. (author), Vilim, V. (author), Zwinderman, A.H. (author), Kroon, H.M. (author), Ronday, H.K. (author), Lems, W.F. (author), Dijkmans, B.A.C. (author), Breedveld, F.C. (author), Vliet Vlieland, T.P.M. (author), Hazes, J.M.W. (author), de Groot, J. (author), TNO Kwaliteit van Leven (author)Objective. To investigate the utility of serum COMP level measurements as a predictor of future damage of the weight-bearing (large) joints in RA patients participating in intensive exercise. Methods. Data of the 281 completers of a 2-yr randomized controlled trial (Rheumatoid Arthritis Patients In Training; RAPIT) comparing the effects of usual...article 2008
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Kroon, M.E. (author), Koolwijk, P. (author), van der Vecht, B. (author), van Hinsbergh, V.W.M. (author), Gaubius Instituut TNO (author)Hypoxia stimulates angiogenesis, the formation of new blood vessels. This study evaluates the direct effect of hypoxia (1% oxygen) on the angiogenic response of human microvascular endothelial cells (hMVECs) seeded on top of a 3-dimensional fibrin matrix, hMVECs stimulated with fibroblast growth factor-2 (FGF-2) or vascular endothelial growth...article 2000
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Kroon, J.M. (author), Janssen, R.A.J. (author), Graetzel, M. (author), Wienke, M.M. (author), Lutsen, L. (author), Krebs, F.C. (author), Gevorgyan, A.A. (author), Gholamkhass, B. (author), Holdcroft, S. (author), Schlenker, C. (author), Thompson, M.E. (author), Olson, D. (author), Ginley, D.S. (author), Shaheen, S.E. (author), Alshareef, H.N. (author), Murphy, J.W. (author), Youngblood, W.J. (author), Heston, N.C. (author), Reynolds, J.R. (author), Jia, S. (author), Laird, D. (author), Tuladhar, S.M. (author), Dane, J.G.A. (author), Atienzar, P. (author), Nelson, J. (author), Tvingstedt, K. (author), Zhang, F. (author), Andersson, M. (author), Inganas, O. (author), Lira-Cantu, M. (author), de Bettignies, R. (author), Guillerez, S. (author), Aernouts, T. (author), Cheyns, D. (author), Zimmermann, B. (author), Wuerfel, U. (author), Niggemann, M. (author), Schleiermacher, H-F. (author), Liska, P. (author), Lianos, P. (author), Katz, E.A. (author), Lohwasser, W. (author), Jannon, B. (author)A round robin for the performance of roll-to-roll coated flexible large-area polymer solar-cell modules involving 18 different laboratories in Northern America, Europe and Middle East is presented. The study involved the performance measurement of the devices at one location (Risø DTU) followed by transportation to a participating laboratory for...article 2009
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Kroon, P.S. (author), Schrier, A.P. (author), Veenendaal, E.M. (author), Leffelaar, P.A. (author), Berendse, F. (author), va. Huissteden, J. (author)Methane (CH4) emissions were compared for an intensively and extensively managed agricultural area on peat soils in the Netherlands to evaluate the effect of reduced management on the CH4 balance. Chamber measurements (photoacoustic methods) for CH4 were performed for a period of three years in the contributing landscape elements in the research...article 2010
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Hensen, A. (author), Kroon, P.S. (author), Schrier, A.P. (author), Jonker, H. (author), Veenendaal, E.M. (author)Annual terrestrial balances of methane (CH4) and nitrous oxide (N2O) are presented for a managed fen meadow in the Netherlands for 2006, 2007 and 2008, using eddy covariance (EC) flux measurements. Annual emissions derived from different methods are compared. The most accurate annual CH4 flux is achieved by gap filling EC fluxes with an...article 2010
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Kroon, J.M. (author), Blom, P.W.M. (author), Veenstra, S.C. (author), Andriessen, R. (author), Rubingh, E. (author), Galagan, Y. (author), Fan, C-C. (author)The presence of transparent conductive electrode such as indium tin toxide (ITO) limits the reliability and cost price of organic photovoltaic devices as it is brittle and expensive. Moreover, the relative high sheet resistance of an ITO electrode on flexible substrates limits the maximum width of a single cell. We have developed an alternative...article 2010
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Kroon, J.M. (author), Verhees, W.J.H. (author), Veenstra, S.C. (author), Andriessen, R. (author), Galagan, Y. (author), de Vries, I. (author), Langen, A. (author)In order to reach the objective of low-cost, large area organic photovoltaic systems, we build up a knowledge base concerning the influence of process conditions on the performance of polymer solar cells. A large area solar cell module, with roll-to-roll coated PEDOT:PSS and photoactive layers (based on P3HT:[C60]PCBM blend) on a flexible...article 2010
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Kroon, P.S. (author), Veenendaal, E.M. (author), van Huissteden, J. (author), Kwakernaak, C. (author), van de. Akker, J.J.H. (author)-article 2010
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Energieonderzoek Centrum Nederland (author), Hensen, A. (author), Kroon, P.S. (author), Jonker, H. (author)-article 2010
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Hensen, A. (author), Kroon, P.S. (author), Schrier, A.P. (author), Veenendaal, E.M. (author), Leffelaar, P.A. (author), Berendse, F. (author)Fluxes of methane (CH4) and carbon dioxide (CO2) estimated by empirical models based on small-scale chamber measurements were compared to large-scale eddy covariance (EC) measurements for CH4 and to a combination of EC measurements and EC-based models for CO2. The experimental area was a flat peat meadow in the Netherlands with heterogeneous...article 2010