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Ruggeri, E. (author), van Aken, B.B. (author), Isabella, O. (author), Zeman, M. (author)Imaging techniques, like electroluminescence and dark lock-in thermography, are valuable quality control tools as they yield quantitative and spatially resolved information about the device. In this paper, we isolated some of the conductive foil– cell interconnections of back-contact solar cells to study the appearance of these intentional...article 2018
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Kuik, M. (author), Koster, L.J.A. (author), Dijkstra, A.G. (author), Wetzelaer, G.A.H. (author), Blom, P.W.M. (author)We present a quantitative analysis of the loss of electroluminescence in light-emitting diodes (LEDs) based on poly[2-methoxy-5-(2′-ethylhexyloxy)- p-phenylenevinylene] (MEH-PPV) due to the combination of non-radiative trap-assisted recombination and exciton quenching at the metallic cathode. It is demonstrated that for an MEH-PPV LED the...article 2012
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Nicolai, H.T. (author), Hof, A. (author), Oosthoek, J.L.M. (author), Blom, P.W.M. (author)The charge transport in blue light-emitting polyspirobifluorene is investigated by both steady-state current-voltage measurements and transient electroluminescence. Both measurement techniques yield consistent results and show that the hole transport is space-charge limited. The electron current is found to be governed by a high intrinsic...article 2011
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TNO Industrie (author), 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)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
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TNO Industrie en Techniek (author), Brunner, K. (author), van Haare, J.A.E.H. (author), Langeveld-Voss, B.M.W. (author), Schoo, H.F.M. (author), Hofstraat, J.W. (author), van Dijken, A. (author)The mechanism of excitation energy transfer is studied using host-guest systems consisting of green and yellow emitting poly(phenylene vinylene) (PPV) based polymers into which red emitting dyes are dispersed. The photoluminescence from such polymer-dye systems is studied in the steady-state and time resolved. Furthermore, the...article 2002