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Papadopoulos, N.P. (author), de Roose, F. (author), van der Steen, J.-L.P.J. (author), Smits, E.C.P. (author), Ameys, M. (author), Dehaene, W. (author), Genoe, J. (author), Myny, K. (author)The maturity of metal–oxide thin-film transistors (TFT) highlights opportunities to develop robust and low-cost electronics on flexible and stretchable substrates over large area in an industry-compatible technology. Internet-ofEverything applications with sensor nodes are driving the development of analog-to-digital converters (ADCs). In this...article 2018
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Fonseca, A.S. (author), Kuijpers, E. (author), Kling, K.I. (author), Levin, M. (author), Koivisto, A.J. (author), Nielsen, S.H. (author), Fransman, W. (author), Fedutik, Y. (author), Jensen, K.A. (author), Koponen, I.K. (author)Fume hoods are one of the most common types of equipment applied to reduce the potential of particle exposure in laboratory environments. A number of previous studies have shown particle release during work with nanomaterials under fume hoods. Here, we assessed laboratory workers’ inhalation exposure during synthesis and handling of CuO, TiO2...article 2018
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- Frijters, C. (author), van den Bruele, F. (author), Grob, F. (author), Illiberi, A. (author), Creyghton, Y. (author), Roozeboom, F. (author), Poodt, P. (author) public lecture 2017
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- Illiberi, A. (author), Katsouras, I. (author), Gazibegovic, S. (author), Cobb, B. (author), Nekovic, E. (author), van Boekel, W. (author), Frijters, C. (author), Maas, J. (author), Roozeboom, F. (author), Creyghton, Y. (author), Poodt, P. (author), Gelinck, G. (author) public lecture 2017
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- Ghittorelli, M. (author), Torricelli, F. (author), Garripoli, C. (author), van der Steen, J.L.J.P. (author), Gelinck, G.H. (author), Abdinia, S. (author), Cantatore, E. (author), Kovacs-Vajna, Z.M. (author) conference paper 2017
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- Roozeboom, F. (author) public lecture 2017
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Heremans, P. (author), Papadopoulos, N. (author), de Jamblinne De Meux, A. (author), Nag, M. (author), Steudel, S. (author), Rockele, M. (author), Gelinck, G. (author), Tripathi, A. (author), Genoe, J. (author), Myny, K. (author)We discuss in this paper the present state and future perspectives of thin-film oxide transistors for flexible electronics. The application case that we focus on is a flexible health patch containing an analog sensor interface as well as digital electronics to transmit the acquired data wirelessly to a base station. We examine the electronic...conference paper 2016
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Blanker, J. (author), Vroon, Z. (author), Zeman, M. (author), Smets, A. (author)Copper-indium-gallium-di-selenide (CIGS) is the present record holder in lab-scale thin-film photovoltaics (TFPV). One of the problems of this PV technology is the scarcity of indium. Multi-junction solar cells allow better spectral utilization of the light spectrum, while the required current generation per layer is much lower, allowing much...conference paper 2016
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Theelen, M. (author), Hendrikx, R. (author), Barreau, N. (author), Steijvers, H. (author), Böttger, A. (author)Unencapsulated CIGS solar cells were simultaneously exposed to damp heat and illumination. In-situ monitoring of their electrical parameters demonstrated a rapid decrease of the efficiency, mainly driven by changes in the series and shunt resistances. The non-degraded and degraded solar cells were studied by SIMS and XRD to investigate the...article 2016
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Morales-Masis, M. (author), Dauzou, F. (author), Jeangros, Q. (author), Dabirian, A. (author), Lifka, H. (author), Gierth, R. (author), Ruske, M. (author), Moet, D. (author), Hessler-Wyser, A. (author), Ballif, C. (author)Flexible large-area organic light-emitting diodes (OLEDs) require highly conductive and transparent anodes for efficient and uniform light emission. Tin-doped indium oxide (ITO) is the standard anode in industry. However, due to the scarcity of indium, alternative anodes that eliminate its use are highly desired. Here an indium-free anode is...article 2016
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Frijters, C.H. (author), Poodt, P. (author), Illeberi, A. (author)Zinc oxysulfide has been grown by spatial atomic layer deposition (S-ALD) and successfully applied as buffer layer in Cu(In, Ga)Se2 (CIGS) solar cells. S-ALD combines high deposition rates (up to nm/s) with the advantages of conventional ALD, i.e. excellent control of film composition and superior uniformity over large-area and even non-flat...article 2016
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Bhoolokam, A. (author), Nag, M. (author), Steudel, S. (author), Genoe, J. (author), Gelinck, G. (author), Kadashchuk, A. (author), Groeseneken, G. (author), Heremans, P. (author)We validate a model which is a combination of multiple trapping and release and percolation model for describing the conduction mechanism in amorphous indium gallium zinc oxide (a-IGZO) thin film transistors (TFT). We show that using just multiple trapping and release or percolation model is insufficient to explain TFT behavior as a function of...article 2016
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Gelinck, G.H. (author), Kumar, A. (author), Moet, D. (author), van der Steen, J.L.P.J. (author), van Breemen, A.J.J.M. (author), Shanmugam, S. (author), Langen, A. (author), Gilot, J. (author), Groen, W.A. (author), Andriessen, H.A.J.M. (author), Simon, M. (author), Ruetten, W. (author), Douglas, A.U. (author), Raaijmakers, R. (author), Malinowski, P.E. (author), Myny, K. (author)We made and characterized an X-ray detector on a 25-ìm-thick plastic substrate that is capable of medicalgrade performance. As an indirect conversion flat panel detector, it combined a standard scintillator with an organic photodetector (OPD) layer and oxide thin-film transistor backplane. Using solution-processed organic bulk heterojunction...article 2016
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Theelen, M. (author), de Graaf, F. (author), Daume, F. (author), Barreau, N. (author), Vroon, Z. (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 2016
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Niang, K.M. (author), Barquinha, P.M.C. (author), Martins, R.F.P. (author), Cobb, B. (author), Powell, M.J. (author), Flewitt, A.J. (author)Thin film transistors (TFTs) employing an amorphous indium gallium zinc oxide (a-IGZO) channel layer exhibit a positive shift in the threshold voltage under the application of positive gate bias stress (PBS). The time and temperature dependence of the threshold voltage shift was measured and analysed using the thermalization energy concept. The...article 2016
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Theelen, M. (author), Daume, F. (author)As Cu(In,Ga)Se2 (CIGS) photovoltaic (PV) technology matures to production on an industrial scale, its long-term stability becomes increasingly important: The electric yield and thus the revenue of a PV system depend on both the initial conversion efficiency as well as its development over time. Increasing this long-term stability by...article 2016
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Williams, F.M. (author), Rothe, H. (author), Barrett, G. (author), Chiodini, A. (author), Whyte, J. (author), Cronin, M.T.D. (author), Monteiro-Riviere, N.A. (author), Plautz, J. (author), Roper, C. (author), Westerhout, J. (author), Yang, C. (author), Guy, R.H. (author)Threshold of Toxicological Concern (TTC) aids assessment of human health risks from exposure to low levels of chemicals when toxicity data are limited. The objective here was to explore the potential refinement of exposure for applying the oral TTC to chemicals found in cosmetic products, for which there are limited dermal absorption data. A...article 2016
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Bhoolokam, A. (author), Nag, M. (author), Chasin, A. (author), Steudel, S. (author), Genoe, J. (author), Gelinck, G. (author), Groeseneken, G. (author), Heremans, P. (author)It is shown in this paper that the finite resistance of the accumulation channel in amorphous In–Ga–Zn–O thin-film transistors (a-IGZO TFTs) is the main cause of the frequency dispersion of the capacitance–voltage curves in these devices. A transmission line model, accounting for the distributed nature of channel resistance, is used to explain...article 2015
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Williams, B.L. (author), Smit, S. (author), Kniknie, B.J. (author), Bakker, K.J. (author), Keuning, W. (author), Kessels, W.M.M. (author), Schropp, R.E.I. (author), Creatore, M. (author)An equivalent circuit model, which allows for the presence of three types of shunting pathways, has been developed to describe the dark J-V characteristics in CIGS solar cells. Excellent agreement between the model and experimental data was apparent throughout a temperature range of 183-323K. Voltage-independent ideality factors may be extracted...article 2015
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Tripathi, A.K. (author), Myny, K. (author), Hou, B. (author), Wezenberg, K. (author), Gelinck, G.H. (author)In this paper, we present the fabrication and characterization of highly flexible indium-gallium-zinc-oxide (IGZO)-based thin-film transistors (TFTs) and integrated circuits on a transparent and thin polymer substrate. Mechanical reliability tests are performed under bending conditions down to a bending radius of 2 mm. All the TFT parameters...article 2015