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Villa, S. (author), Aninat, R. (author), Yilmaz, P. (author), Kingma, A. (author), Dziechciarz, M. (author), van den Berg, J. (author), Bakker, K. (author), Theelen, M. (author)Moisture ingress is known to be one of the most frequent and detrimental causes of photovoltaic (PV) modules degradation. In an original approach, the present work applies the full analytic capability of lab-scale equipment to characterize a commercial Cu(In,Ga)(Se,S)2 (CIGS) module that degraded in the field due to moisture ingress. By...article 2023
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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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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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Ahmadi-Abhari, S. (author), Woortman, A.J.J. (author), Hamer, R.J. (author), Oudhuis, A.A.C.M. (author), Loos, K. (author)Starch is an omnipresent constituent which is used for its nutritional and structuring properties. Recently concerns have been raised since starch is a source of readily available glucose which is tightly correlated with diabetes type II and obesity. For this reason, the possibilities for modulating the digestibility of starch while preserving...article 2013