Searched for: author:"van de Weijer, P."
(1 - 11 of 11)
document
van de Weijer, P. (author), Akkerman, H.B. (author)
In order to protect a flexible OLED on plastic foil against water from the ambient atmosphere a top and bottom thin-film encapsulation (TFE) is necessary. A TFE stack SiN-OCP-SiN with getter in OCP results in excellent shelf lifetime. However, the getter particles result in light scattering that is lost upon water ingress in the stack. As a...
article 2019
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Akkerman, H.B. (author), Pendayala, R. (author), Panditha, V.K.P. (author), Salem, A. (author), Shen, J. (author), van de Weijer, P. (author), Bouten, P.C.P. (author), Winter, S.H.P.M. (author), van Diesen-Tempelaars, K. (author), de Haas, G.J.A.J.F. (author), Steudel, S. (author), Huand, C. (author), Lai, M. (author), Huang, Y. (author), Yeh, M. (author), Kronemeijer, A.J. (author), Poodt, P. (author), Gelinck, G. (author)
We present a thin-film dual-layer bottom barrier on PI that is compatible with 350°C backplane processing for OLED displays. We demonstrate OLEDs that survive bending over 0.5 mm radius for 10.000x. Furthermore, we show compatibility of the bottom barrier with the backplane process by fabricating AMOLED displays on GEN1-sized substrates.
conference paper 2018
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van de Weijer, P. (author), Akkerman, H.B. (author), Bouten, P.C.P. (author), Panditha, P. (author), Klaassen, P.J.M. (author), Salem, A. (author)
Side leakage experiments have been performed on the organic interlayer, so-called organic coating for planarization (OCP), in a hybrid thin-film encapsulation (TFE) stack based on two silicon nitride (SiN) barrier layers that was developed for organic light-emitting diodes (OLED). To measure the side leakage into OCP, a metallic Ca thin-film...
article 2018
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Akkerman, H.B. (author), Pendyala, R.K. (author), Panditha, P. (author), Salem, A. (author), Shen, J. (author), van de Weijer, P. (author), Bouten, P.C.P. (author), de Winter, S.H.P.M. (author), van Diesen-Tempelaars, K. (author), de Haas, G. (author), Steudel, S. (author), Huang, C.Y. (author), Lai, M.H. (author), Huang, Y.Y. (author), Yeh, M.H. (author), Kronemeijer, A.J. (author), Poodt, P. (author), Gelinck, G.H. (author)
We present a thin-film dual-layer bottom barrier on polyimide that is compatible with 350°C backplane processing for organic light-emitting diode displays and that can facilitate foldable active-matrix organic light-emitting diode devices with a bending radius of <2 mm. We demonstrate organic light-emitting diodes that survive bending over 0.5...
article 2018
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van de Weijer, P. (author), Bouten, P.C.P. (author), Unnikrishnan, S. (author), Akkerman, H.B. (author), Michels, J.J. (author), van Mol, T.M.B. (author)
Organic light-emitting diodes degrade rapidly by means of local cathode oxidation when exposed to the ambient atmosphere, resulting in visible non-emissive areas called black spots. High performance inorganic based encapsulations are required to protect the OLED. We have applied a hybrid thin-film encapsulation stack consisting of two inorganic...
article 2017
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van de Weijer, P. (author), Bouten, P.C.P. (author), Fledderus, H. (author), Janssen, R.R. (author), de Winter, S.H.P.M. (author), Akkerman, H.B. (author)
Local laser ablation of the cathode of OLEDs has been applied to create a population of pinholes of the same size. This enables the direct comparison at different conditions of black spots and grey spots in the emission of OLEDs as a result of water ingress into the device. We confirmed earlier observations on the operational effect of black...
article 2017
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van de Weijer, P. (author), Lu, K. (author), Janssen, R.R. (author), de Winter, S.H.P.M. (author), Akkerman, H.B. (author)
When organic light-emitting diodes (OLEDs) are exposed to the ambient atmosphere, water penetration through pinholes in the cathode results in the formation of non-emissive areas (black spots) due to local oxidation of the cathode around the pinhole. This degradation effect severely limits the lifetime of OLED devices and requires high...
article 2016
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Van Assche, F.J.H. (author), Unnikrishnan, S. (author), Michels, J.J. (author), van Mol, A.M.B. (author), van de Weijer, P. (author), van de Sanden, M.C.M. (author), Creatore, M. (author)
We report on a low substrate temperature (110°C) remote microwave plasma-enhanced chemical vapor deposition (PECVD) process of silicon nitride barrier layers against moisture permeation for organic light emitting diodes (OLEDs) and other moisture sensitive devices such as organic photovoltaic cells (OPVs). Specifically, the influence of the SiH4...
article 2014
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Li, F.M. (author), Unnikrishnan, S. (author), van de Weijer, P. (author), van Assche, F. (author), Shen, J. (author), Ellis, T. (author), Manders, W. (author), Akkerman, H. (author), Bouten, P. (author), van Mol, A.M.B. (author)
The availability of a high performance thin-film barrier is the most critical challenge in upscaling and commercializing flexible OLED products. We report a flexible thin-film-barrier technology that meets lifetime specifications for OLED lighting, and demonstrate it in rollable QVGA a-IGZO AMOLED displays. Roll-to-roll manufacturing of this...
article 2013
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van Assche, F.J.H. (author), Rooms, H.C.A. (author), Young, E.W.A. (author), Michels, J. (author), van Mol, A.M.B. (author), Rietjens, G. (author), van de Weijer, P. (author), Bouten, P. (author), TNO Industrie en Techniek (author)
Within the Holst centre a transparent barrier on foil has been under development which is based on low-temperature plasma deposited silicon nitride films as intrinsic moisture barrier, stacked with planarization layers to spatially separate defects in these films. OLED lifetime testing and water vapor transmission rate measurements using a Ca...
conference paper 2008
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Meulenkamp, E.A. (author), van Aar, R. (author), Bastiaansen, J.J.A.M. (author), van den Biggelaar, A.J.M. (author), Börner, H. (author), Brunner, K. (author), Büchel, M. (author), van Dijken, A. (author), Kiggen, N.M.M. (author), Kilitziraki, M. (author), de Kok, M.M. (author), Langeveld, B.M.W. (author), Ligter, M.P.H. (author), Vulto, S.I.E. (author), van de Weijer, P. (author), de Winter, S.H.P.M. (author), TNO Industrie (author)
We present results and a discussion of highly efficient polymer Light-Emitting Diodes (polymer LEDs, PLEDs). The external quantum efficiency in current standard devices reaches up to 2-4% only. We have explored two routes to enhance this value. In the first route, PEDOT/PSS is replaced with a novel anode or hole injection layer. The efficiency...
conference paper 2004
Searched for: author:"van de Weijer, P."
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