Searched for: author%3A%22Brondijk%2C+J.J.%22
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Brondijk, J.J. (author), Maddalena, F. (author), Asadi, K. (author), van Leijen, H.J. (author), Heeney, M. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)
We investigate the mobility of poly(3-hexylthiophene) (P3HT) over a carrier-density range from 1015 to 1020cm-3. Hole-only diodes were used for densities below 1016cm-3 and field-effect transistors were used for carrier densities higher than 1018cm-3. To fill the gap, intermediate densities were probed using chemically doped Schottky diodes and...
article 2012
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Brondijk, J.J. (author), Spijkman, M. (author), van Seijen, F. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)
An inversion current in unipolar organic field-effect transistors is not observed, which can be due to trapping of electrons or to negligible electron injection. Here, we distinguish between both cases by studying the depletion current of unipolar p-type transistors based on a deliberately doped organic semiconductor. For each doping level, the...
article 2012
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Brondijk, J.J. (author), Torricelli, F. (author), Smits, E.C.P. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)
The charge injection barriers in organic field-effect transistors (OFETs) seem to be far less critical as compared to organic light-emitting diodes (OLEDs). Counter intuitively, we show that the origin is image-force lowering of the barrier due to the gate bias at the source contact, although the corresponding gate field is perpendicular to the...
article 2012
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Brondijk, J.J. (author), Roelofs, W.S.C. (author), Mathijssen, S.G.J. (author), Shehu, A. (author), Cramer, T. (author), Biscarini, F. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)
We analyze the effect of carrier confinement on the charge-transport properties of organic field-effect transistors. Confinement is achieved experimentally by the use of semiconductors of which the active layer is only one molecule thick. The two-dimensional confinement of charge carriers provides access to a previously unexplored charge...
article 2012
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Brondijk, J.J. (author), Spijkman, M. (author), Torricelli, F. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)
The charge carrier distribution in dual-gate field-effect transistors is investigated as a function of semiconductor thickness. A good agreement with 2-dimensional numerically calculated transfer curves is obtained. For semiconductor thicknesses larger than the accumulation width, two spatially separated channels are formed. The cross-over from...
article 2012
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Brondijk, J.J. (author), Asadi, K. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)
Most of the envisaged applications of organic electronics require a nonvolatile memory that can be programmed, erased, and read electrically. Ferroelectric field-effect transistors (FeFET) are especially suitable due to the nondestructive read-out and low power consumption. Here, an analytical model is presented that describes the charge...
article 2012
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Spijkman, M.-J. (author), Brondijk, J.J. (author), Geuns, T.C.T. (author), Smits, E.C.P. (author), Cramer, T. (author), Zerbetto, F. (author), Stoliar, P. (author), Biscarini, F. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)
Buried electrodes and protection of the semiconductor with a thin passivation layer are used to yield dual-gate organic transducers. The process technology is scaled up to 150-mm wafers. The transducers are potentiometric sensors where the detection relies on measuring a shift in the threshold voltage caused by changes in the electrochemical...
article 2010
Searched for: author%3A%22Brondijk%2C+J.J.%22
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