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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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Caron, J.F. (author), Bäumer, S.M.B. (author)
The aberrations of reflective optical systems with one plane of symmetry are investigated in the most general case, with freeform surfaces and possibly different locations of the tangential and sagittal object and image. In this first paper in a series of two, we establish generalized ray-tracing equations including transverse aberrations up to...
article 2021
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Caron, J.F. (author), Bäumer, S.M.B. (author)
The aberrations of reflective optical systems with planar symmetry are investigated in the most general case, with freeform surfaces and possibly different locations of the tangential and sagittal object and image. In this second and last paper, closed-form expressions are derived for the aberrations created by an individual mirror. We study two...
article 2021
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Schenk, D. (author)
Over een aantal jaar moet op bijna 3 km hoogte, op een bergtop in Chili, ’s werelds grootste telescoop verrijzen. Deze Extremely Large Telescope (ELT) wordt gebouwd door de Europese Zuidelijke Sterrenwacht (ESO). De onderdelen worden momenteel op allerlei plekken ter wereld in elkaar gesleuteld, waaronder in Nederland. Zo zal TNO samen met het...
article 2021
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Smirnov, Y. (author), Schmengler, L. (author), Kuik, R. (author), Repecaud, P.A. (author), Najafi, M. (author), Zhang, D. (author), Theelen, M. (author), Aydin, E. (author), Veenstra, S. (author), de Wolf, S. (author), Morales-Masis, M. (author)
Sputtered transparent conducting oxides (TCOs) are widely accepted transparent electrodes for several types of high-efficiency solar cells. However, the different sputtering yield of atoms makes stoichiometric transfer of target material challenging for multi-compounds. Additionally, the high kinetic energies of the arriving species may damage...
article 2021
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Pil, A. (author)
TNO en Demcon Focal helpen bij het ontwerp en de bouw van het totale laser guide star-projectiesysteem voor de Extremely Large Telescope.
article 2021
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Luo, X. (author), Grossbichler, M. (author), Waschl, H. (author), Donkers, M.C.F. (author), de Jager, B. (author), Willems, F.P.T. (author)
When controlled in an open-loop fashion, both stationary and dynamical diesel engine performance can deteriorate due to disturbances. Although cycle-to-cycle fuel injection control has the potential of reducing the performance degradation by manipulating the fueling profile in real time, this potential has not been thoroughly studied. This is...
article 2021
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Ros, J.A. (author), Doedée, V. (author), van den Akker, J.T. (author), Vredeveldt, A.W. (author), Linders, M.J.G. (author), Goetheer, E.L.V. (author), Garcia Moretz-Sohn Monteiro, J. (author)
The maritime industry has set clear objectives towards reducing greenhouse gas emissions in the coming decades. Ship based carbon capture (SBCC) could play a large role in reducing these emissions on the short term. This study gives an update on the work that has been conducted towards carbon capture and storage on LNG fuelled vessels. This is...
conference paper 2021
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Prabowo, B. (author), Zheng, G. (author), Mehrpoo, M. (author), Patra, B. (author), Harvey-Collard, P. (author), Dijkema, J. (author), Sammak, A. (author), Scappucci, G. (author), Charbon, E. (author), Sebastiano, F. (author), Vandersypen, L.M.K. (author), Babaie, M. (author)
Quantum computers (QC) promise to solve certain computational problems exponentially faster than a classical computer due to the superposition and entanglement properties of quantum bits (qubits). Among several qubit technologies, spin qubits are a promising candidate for large-scale QC, since (1) they have a small footprint allowing them to be...
conference paper 2021
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Koodly Ravishankara, A. (author), Özdemir, H. (author), van der Weide, E. (author)
The surface of wind turbine blades are prone to degradation due to exposure to the elements. Rain, hail, insects are among the many causes of turbine blade degradation or erosion. Surface degradation of the wind turbine blades leads to a reduction in the aerodynamic performance, resulting in power losses. The effect of surface degradation is...
article 2021
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Kenworthy, C.F. (author), Stoevelaar, L.P. (author), Alexander, A.J. (author), Gerini, G. (author)
In this paper, we report the effect of optical trapping on the enhancement factor for Raman spectroscopy, using a dielectric metasurface. It was found that a higher enhancement factor (up to 275%) can be obtained in a substrate immersed in water, where particles are freee to move, compared to a dried substrate, where the particles (radius r = 9...
article 2021
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Jo, Y. (author), Kwon, J. (author), van der Steen, J.L.J. (author), A. Kronemeijer, A. (author), Jung, S. (author)
Here, we present a pseudo-CMOS NOR gate array based on dual-gate amorphous indium-gallium-zinc oxide thin-film transistors (TFTs) on plastic. We fabricated a 14 × 12 array of NOR gates which was programmed using laser-induced forward transfer printing technology to realize a negative-edge-triggered D flip-flop. Two drive transistors in a...
article 2021
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Karabanova, A. (author), Berdiyeva, P. (author), van der Pal, M. (author), Johnsen, R.E. (author), Deledda, S. (author), Blanchard, D. (author)
Thermochemical heat storage is expected to play an important role in the ongoing transformation of the European energy system. The efficiency of thermochemical heat storage systems largely depends on that of the reactor, since it limits the amount of the heat stored per unit volume as well as the rate of the heat recovery. Thus, the optimization...
article 2021
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Akkerman, H. (author), Peeters, B. (author), van Breemen, A. (author), Shanmugam, S. (author), Ugalde Lopez, L. (author), Tordera, D. (author), van de Ketterij, R. (author), Delvitto, E. (author), Malinowski, P. (author), Ke, T.-H. (author), De Roose, F. (author), Moreno Hagelsieb, L. (author), Katsouras, I. (author), Kronemeijer, A.J. (author), Meulenkamp, E. (author), Gelinck, G. (author)
In recent years there is an increasing interest to integrate optical sensing in mobile displays, for instance, for biometric fingerprint scanning functionality. There are several routes to incorporate optical fingerprint functionality within the full display area, each with their own benefits and challenges. Here we investigate the different...
conference paper 2021
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Ke, T.-H. (author), Epimitheas, E. (author), Molina Alvarez, G. (author), Vandenplas, E. (author), Moreno Hagelsieb, L. (author), Akkerman, H. (author), Shanmugam, S. (author), van Breemen, A. (author), Heremans, P. (author), Malinowski, P. (author)
We apply a photolithographic patterning process to integrate a green phosphorescent organic light emitting diode (OLED) with a polymer‐based organic photodetector (OPD) side‐by‐side with resolution up to 635 ppi. The characteristics of OLED and OPD before and after patterning are investigated. The crosstalk between OLED and OPD subpixels and the...
conference paper 2021
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Altmann, R.K. (author)
This report, commissioned by Fraunhofer IFAM, describes a set of laser-induced-breakdown spectroscopy experiments performed on five samples provided by the client. The experiments were performed using TNO’s in-line LIBS sensor and proprietary spectrometer, as described in detail in Section 2. The measurement conditions and analysis is described...
report 2021
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Buvik, V. (author), Bernhardsen, I.M. (author), Figueiredo, R.V. (author), Vevelstad, S.J. (author), Goetheer, E.L.V. (author), van Os, P.J. (author), Knuutila, H.K. (author)
This work aims to understand oxygen solubility in pure and aqueous amine solvents for CO2 capture. Commercially available dissolved oxygen sensors were studied to evaluate whether these can be used for measuring oxygen solubility in the carbon capture processes. It also aims to understand the possible discrepansies from realistic concentrations...
article 2021
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Molkenboer, F.T. (author)
public lecture 2021
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Schenk, D. (author)
Om lasercommunicatie voor vliegtuigen mogelijk te maken zijn Airbus en TNO het programma UltraAir gestart. Hierbij gaan ze een demonstratiemodel ontwikkelen, bouwen en testen om laserverbindingen mogelijk te maken tussen vliegtuigen en satellieten in geostationaire banen op ongeveer 36.000 kilometer hoogte.
article 2021
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Pil, A. (author)
Het Johns Hopkins Applied Physics Laboratory en TNO hebben een memorandum of understanding ondertekend, waarmee de transatlantische samenwerking tussen de twee organisaties – die al tien jaar loopt – nu ook formeel is vastgelegd. APL en TNO richten zich beide op toegepast onderzoek, waardoor zij een natuurlijke gemeenschappelijke basis hebben...
article 2021
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