Searched for: subject%3A%22Illumination%22
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Aninat, R. (author), Bakker, K. (author), Jouard, L. (author), ott Cruz, M.G.S. (author), Yilmaz, P. (author), Theelen, M. (author)
The ever-increasing instalment capacity of Cu (In, Ga)(Se, S)2-based photovoltaicscalls for a better understanding and control of their reliability. In this paper, we showhow using a coring-based method, small samples can be extracted from full size com-mercial modules, and prepared for lab-scale analysis. The method is applied to a Cu(In, Ga)...
article 2022
document
Wang, J. (author), Zardetto, V. (author), Datta, K. (author), Zhang, D. (author), Wienk, M.M. (author), Janssen, R.A.J. (author)
Perovskite semiconductors hold a unique promise in developing multijunction solar cells with high-efficiency and low-cost. Besides design constraints to reduce optical and electrical losses, integrating several very different perovskite absorber layers in a multijunction cell imposes a great processing challenge. Here, we report a versatile two...
article 2020
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Verkaaik, M. (author), Grote, R. (author), Meulendijks, N. (author), Sastre, F. (author), Weckhuysen, B.M. (author), Buskens, P. (author)
The interaction between plasmonic metal catalysts and visible light can be exploited to increase their catalytic activity. This activity increase results from the generation of hot charge carriers or hot surfaces, or a combination of both. We have studied the light-induced Suzuki-Miyaura cross-coupling reaction of bromobenzene and m-tolylboronic...
article 2019
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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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Theelen, M. (author), Bakker, K. (author), Steijvers, H. (author), Roest, S. (author), Hielkema, P. (author), Barreau, N. (author), Haverkamp, E. (author)
The levelized cost of electricity (LCOE) of photovoltaic (PV) systems is determined by, among other factors, the PV module reliability. Better prediction of degradation mechanisms and prevention of module field failure can consequently decrease investment risks as well as increase the electricity yield. An improved knowledge level can for these...
article 2018
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Shidachi, R. (author), Matsuhisa, N. (author), Zalar, P. (author), Chow, P.C.Y. (author), Jinno, H. (author), Yokota, T. (author), Someya, T. (author)
In this paper, the amplification of the photocurrent in organic phototransistors (OPTs) employing bulk heterojunctions (BHJs) with different donor–acceptor ratios has been studied. As a model system, poly[2-methoxy-5-(3’,7’-dimethyloctyloxy)-p-phenylene vinylene] (OC1C10-PPV) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) are used as...
article 2018
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Kuang, Y. (author), Zardetto, V. (author), van Gils, R. (author), Karwal, S. (author), Koushik, D. (author), Verheijen, M.A. (author), Black, L.E. (author), Weijtens, C. (author), Veenstra, S.C. (author), Andriessen, H.A.J.M. (author), Kessels, W.M.M. (author), Creatore, M. (author)
In this work, we present an extensive characterization of plasma-assisted atomic-layer-deposited SnO2 layers, with the aim of identifying key material properties of SnO2 to serve as an efficient electron transport layer in perovskite solar cells (PSCs). Electrically resistive SnO2 films are fabricated at 50 °C, while a SnO2 film with a low...
article 2018
document
Theelen, M. (author), Beyeler, K. (author), Steijvers, H. (author), Barreau, N. (author)
Unencapsulated CIGS solar cells were simultaneously exposed to either dry or damp heat combined illumination. In-situ monitoring of their electrical parameters demonstrated a rapid decrease of the efficiency for the solar cells exposed to damp heat plus illumination. This decrease was mainly driven by changes in the shunt resistances, affecting...
article 2017
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Theelen, M. (author), de Amorim Soares, G. (author), Beyeler, K. (author), Steijvers, H. (author), Barreau, N. (author)
Unpackaged CIGS solar cells were simultaneously exposed to illumination and either dry heat, damp heat or dry cold followed by thermal cycling. In-situ monitoring of their electrical parameters demonstrated a rapid decrease of the efficiency for the solar cells exposed to damp heat plus illumination. This decrease was mainly driven by changes in...
conference paper 2017
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Theelen, M. (author), Steijvers, H. (author), Bakker, K. (author), Vink, J. (author), Mortazavi, S. (author), Mulder, A. (author), Barreau, N. (author), Roosen, D. (author), Haverkamp, E. (author)
Two hybrid degradation setups, allowing exposure of solar cells and modules to elevated temperatures and humidity as well as illumination have been built. CIGS solar cells were placed in the degradation setups, allowing real time monitoring of their electrical properties. Under open circuit conditions, the efficiency of alkali-rich CIGS solar...
conference paper 2016
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Theelen, M. (author), Barreau, N. (author), Hans, V. (author), Steijvers, H. (author), Vroon, Z. (author), Zeman, M. (author)
Non-encapsulated CIGS solar cells with different contents of sodium (Na) and potassium (K) were simultaneously exposed to damp heat and illumination. The solar cells with higher alkali (Na, K) content exhibited higher initial conversion efficiencies, but degraded severely within 100 hours, while samples with a lower alkali content retained their...
conference paper 2015
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Theelen, M. (author), Hans, V. (author), Barreau, N. (author), Steijvers, H. (author), Vroon, Z. (author), Zeman, M. (author)
Unencapsulated CIGS solar cells with high and low contents of sodium (Na) and potassium (K) were simultaneously exposed to damp heat and illumination. The solar cells with a high alkali (Na, K) content exhibited higher initial conversion efficiencies, but degraded severely within 100-h, while the alkali poor samples kept relatively stable...
article 2015
document
Patil, B.R. (author), Shanmugam, S. (author), Teunissen, J.P. (author), Galagan, Y. (author)
All-solution processed organic solar cells with inverted device architecture were demonstrated. Devices contain opaque bottom electrodes and semitransparent top electrodes, resulting in top illuminated devices. Nanoparticles-based Ag ink was used for inkjet printing both top and bottom electrodes. Semi-transparent top electrode consists of high...
article 2015
document
Theelen, M. (author), Steijvers, H. (author), Barreau, N. (author), Buffiere, M. (author), Brammertz, G. (author), Flammini, M.G. (author), van Vugt, R.J. (author), Vroon, Z. (author), Zeman, M. (author)
A 'hybrid' degradation setup, which allows the use of humidity, temperature and illumination as loads in order to accelerate degradation of solar cells and modules, has been designed and constructed. In this setup, the current voltage output of photovoltaic samples is automatically logged and the electrical parameters are calculated. This allows...
conference paper 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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Minoglou, K. (author), San Segundo Bello, D. (author), Sabuncuoglu Tezcan, D. (author), Haspeslagh, L. (author), van Olmen, J. (author), Merry, B. (author), Cavaco, C. (author), Mazzamuto, F. (author), Toqué-Trésonne, I. (author), Moirin, R. (author), Brouwer, E.A.M. (author), Toccafondi, M. (author), Preti, G. (author), Rosmeulen, M. (author), de Moor, P. (author)
Both ESA and the EC have identified the need for a supply chain of CMOS imagers for space applications which uses solely European sources. An essential requirement on this supply chain is the platformization of the process modules, in particular when it comes to very specific processing steps, such as those required for the manufacturing of...
conference paper 2014
document
Amelink, A. (author), Hoy, C.L. (author), Gamm, U.A. (author), Sterenborg, H.J.C.M. (author), Robinson, D.J. (author)
We have recently demonstrated a means for quantifying the absorption and scattering properties of biological tissue through multidiameter single-fiber reflectance (MDSFR) spectroscopy. These measurements can be used to correct single-fiber fluorescence (SFF) spectra for the influence of optical properties, enabling quantification of intrinsic...
conference paper 2014
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van der Walle, P. (author), Kumar, P. (author), Ityaksov, D. (author), Versluis, R. (author), Maas, D.J. (author), Kievit, O. (author), Janssen, O. (author), van der Donck, J.C.J. (author)
In dark-field particle inspection, the limiting factor for sensitivity is the amount of background scatter due to substrate roughness. This scatter forms a speckle pattern and shows an intensity distribution with a long tail. To reduce false-positives to an acceptable level, a high detection threshold should be chosen such that the tail of the...
conference paper 2013
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Theelen, M. (author), Tomassini, M. (author), Steijvers, H. (author), Vroon, Z. (author), Barreau, N. (author), Zeman, M. (author)
A unique method has been developed to in-situ monitor the accelerated degradation in Cu(In, Ga)Se2 solar cells, in which a degradation setup uses humidity, high temperatures and illumination as loads. IV characteristics of the solar cells are collected during the degradation. Cu(In, Ga)Se2 solar cells and minimodules were degraded in the set-up...
conference paper 2013
document
Itcia, E. (author), Wasselin, J.P. (author), Mazuel, S. (author), Otten, M.P.G. (author), Huizing, A.G. (author)
Rockwell Collins France (RCF) radar department is currently developing, in close collaboration with TNO in The Hague, The Netherlands, a Frequency Modulated Continuous Wave (FMCW) radar sensor dedicated to Obstacle Warning function and potentially to air traffic detection. The sensor combines flood light illumination and digital beam forming to...
conference paper 2013
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