Search Results - "Kemerink, M"

The Role of Delocalization and Excess Energy in the Quantum Efficiency of Organic Solar Cells and the Validity of Optical Reciprocity Relations by Felekidis, N, Melianas, A, Kemerink, M

“…The photon energy dependence of long-range charge separation is studied for two prototypical polymer:fullerene systems. The internal quantum efficiency (IQE)…”
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Separating positive and negative magnetoresistance in organic semiconductor devices by Bloom, F L, Wagemans, W, Kemerink, M, Koopmans, B

“…We study the transition between positive and negative organic magnetoresistance (OMAR) in tris-(8 hydroxyquinoline) aluminium (Alq_{3}), in order to identify…”
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Tuning organic magnetoresistance in polymer-fullerene blends by controlling spin reaction pathways by Janssen, P., Cox, M., Wouters, S.H.W., Kemerink, M., Wienk, M.M., Koopmans, B.

“…Harnessing the spin degree of freedom in semiconductors is generally a challenging, yet rewarding task. In recent years, the large effect of a small magnetic…”
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Unusual thermoelectric behavior indicating a hopping to bandlike transport transition in pentacene by Germs, W Chr, Guo, K, Janssen, R A J, Kemerink, M

“…An unusual increase in the Seebeck coefficient with increasing charge carrier density is observed in pentacene thin film transistors. This behavior is…”
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Microscopic Understanding of the Anisotropic Conductivity of PEDOT:PSS Thin Films by Nardes, A. M., Kemerink, M., Janssen, R. A. J., Bastiaansen, J. A. M., Kiggen, N. M. M., Langeveld, B. M. W., van Breemen, A. J. J. M., de Kok, M. M.

“…The anisotropic conductivity of thin films of poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) is correlated to the film morphology as…”
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Charge transport in amorphous InGaZnO thin-film transistors by Germs, W. Chr, Adriaans, W. H., Tripathi, A. K., Roelofs, W. S. C., Cobb, B., Janssen, R. A. J., Gelinck, G. H., Kemerink, M.

“…We investigate the mechanism of charge transport in indium gallium zinc oxide (a-IGZO), an amorphous metal-oxide semiconductor. We measured the field-effect…”
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Anisotropic hopping conduction in spin-coated PEDOT:PSS thin films by Nardes, A. M., Kemerink, M., Janssen, R. A. J.

“…The charge transport in spin-coated poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) has been investigated as a function of temperature and…”
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Conductivity, work function, and environmental stability of PEDOT:PSS thin films treated with sorbitol by Nardes, A.M., Kemerink, M., de Kok, M.M., Vinken, E., Maturova, K., Janssen, R.A.J.

“…The electrical properties of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) thin films deposited from aqueous dispersion using different…”
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Morphology and conductivity of PEDOT/PSS films studied by scanning–tunneling microscopy by Timpanaro, S., Kemerink, M., Touwslager, F.J., De Kok, M.M., Schrader, S.

“…The influence of sorbitol on the nanometer-scale morphology of poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS) is investigated by…”
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Charge Trapping at the Dielectric of Organic Transistors Visualized in Real Time and Space by Mathijssen, S. G. J., Kemerink, M., Sharma, A., Cölle, M., Bobbert, P. A., Janssen, R. A. J., de Leeuw, D. M.

“…Scanning Kelvin probe microscopy demonstrates that water‐induced charge trapping at the SiO2 dielectric – visualized in real time and space – is responsible…”
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Sign inversion of magnetoresistance in space-charge limited organic devices by Bloom, F L, Kemerink, M, Wagemans, W, Koopmans, B

“…In this Letter, we explain the puzzling sign change of organic magnetoresistance in space-charge limited devices by device physics. We prove analytically and…”
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Large magnetic field effects in electrochemically doped organic light-emitting diodes by van Reenen, S., Kersten, S. P., Wouters, S. H. W., Cox, M., Janssen, P., Koopmans, B., Bobbert, P. A., Kemerink, M.

“…Large negative magnetoconductance (MC) of -12% is observed in electrochemically doped polymer light-emitting diodes at sub-band-gap bias voltages (V…”
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Accurate description of charge transport in organic field effect transistors using an experimentally extracted density of states by Roelofs, W S C, Mathijssen, S G J, Janssen, R A J, de Leeuw, D M, Kemerink, M

“…The width and shape of the density of states (DOS) are key parameters to describe the charge transport of organic semiconductors. Here we extract the DOS using…”
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Explaining the effects of processing on the electrical properties of PEDOT:PSS by VAN REENEN, S, SCHEEPERS, M, VAN DE RUIT, K, BOLLEN, D, KEMERINK, M

“…By simultaneously measuring the Seebeck coefficient and the conductivity in differently processed PEDOT:PSS films, fundamental understanding is gained on how…”
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Morphological Device Model for Organic Bulk Heterojunction Solar Cells by Maturová, K, van Bavel, S. S, Wienk, M. M, Janssen, R. A. J, Kemerink, M

“…We present a numerical model for calculating current-voltage characteristics of polymer:fullerene bulk hetrojunction solar cells at different degrees of…”
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Negative capacitances in low-mobility solids by Gommans, H. H. P., Kemerink, M., Janssen, R. A. J.

“…The negative capacitance as often observed at low frequencies in semiconducting devices is explained by bipolar injection in diode configuration. Numerical…”
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Proton migration mechanism for the instability of organic field-effect transistors by Sharma, A., Mathijssen, S. G. J., Kemerink, M., de Leeuw, D. M., Bobbert, P. A.

“…During prolonged application of a gate bias, organic field-effect transistors show an instability involving a gradual shift of the threshold voltage toward the…”
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Three-Dimensional Inhomogeneities in PEDOT:PSS Films by Kemerink, M, Timpanaro, S, de Kok, M. M, Meulenkamp, E. A, Touwslager, F. J

“…Spin-cast PEDOT/PSS film are investigated using scanning probe-based spectroscopic techniques. The films are found to consist of relatively well-conducting…”
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Proton migration mechanism for operational instabilities in organic field-effect transistors by Sharma, A., Mathijssen, S. G. J., Smits, E. C. P., Kemerink, M., de Leeuw, D. M., Bobbert, P. A.

“…Organic field-effect transistors exhibit operational instabilities involving a shift of the threshold gate voltage when a gate bias is applied. For a constant…”
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Diffusion enhancement in on/off ratchets by Chr. Germs, W., Roeling, E. M., van IJzendoorn, L. J., Janssen, R. A. J., Kemerink, M.

“…We show a diffusion enhancement of suspended polystyrene particles in an electrical on/off ratchet. The enhancement can be described by a simple master…”
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