Searched for: subject%3A%22Polymer%22
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Kuik, M. (author), Wetzelaer, G.-J.A.H. (author), Laddé, J.G. (author), Nicolai, H.T. (author), Wildeman, J. (author), Sweelssen, J. (author), Blom, P.W.M. (author)
The effect of on-chain ketone defects on the charge transport of the polyfluorene derivative poly(9,9-dioctylfluorene) (PFO) is investigated. Using MoO3 as ohmic hole contact, the hole transport in a pristine PFO diode is observed to be limited by space-charge, whereas fluorenone contaminated PFO (PFO-F) is shown to be trap limited by the...
article 2011
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Tripathi, A.K. (author), van Breemen, A.J.J.M. (author), Shen, J. (author), Gao, Q. (author), Ivan, M.G. (author), Reimann, K. (author), Meinders, E.R. (author), Gelinck, G.H. (author)
Multibit memory devices based on the ferroelectric copolymer P(VDF-TrFE) (poly-(vinylidenefluoride-trifluoroethylene)) are presented. Multilevel microstructures are fabricated by thermal imprinting of spin-coated ferroelectric polymer film using a rigid Si template. Multibit storage in capacitors and thin-film transistor memory is realized by...
article 2011
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Nicolai, H.T. (author), Hof, A.J. (author), Lu, M. (author), Blom, P.W.M. (author), de Vries, R.J. (author), Coehoorn, R. (author)
The charge transport in a polyspirobifluorene derivative with copolymerized N,N,N',N'-tetraaryldiamino biphenyl (TAD) hole transport units is investigated as a function of the TAD content. For TAD concentrations larger than 5, guest-to-guest transport is observed. It is demonstrated that in this regime the charge carrier density dependent...
article 2011
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Lu, M. (author), Nicolai, H.T. (author), Wetzelaer, G.-J.A.H. (author), Blom, P.W.M. (author)
N-type doping of poly(2-methoxy-5-(2′-ethyl-hexyloxy)-p-phenylene vinylene) (MEH-PPV) with decamethylcobaltocene (DMC) strongly improves the electron transport due to filling of the electron traps. Unexpectedly, the n-type doping simultaneously suppresses the hole transport in MEH-PPV. We demonstrate that this strong reduction of the hole...
article 2011
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Gevorgyan, S.A. (author), Medford, A.J. (author), Bundgaard, E. (author), Sapkota, S.B. (author), Schleiermacher, H.-F. (author), Zimmermann, B. (author), Würfel, U. (author), Chafiq, A. (author), Lira-Cantu, M. (author), Swonke, T. (author), Wagner, M. (author), Brabec, C.J. (author), Haillant, O. (author), Voroshazi, E. (author), Aernouts, T. (author), Steim, R. (author), Hauch, J.A. (author), Elschner, A. (author), Pannone, M. (author), Xiao, M. (author), Langzettel, A. (author), Laird, D. (author), Lloyd, M.T. (author), Rath, T. (author), Maier, E. (author), Trimmel, G. (author), Hermenau, M. (author), Menke, T. (author), Leo, K. (author), Rösch, R. (author), Seeland, M. (author), Hoppe, H. (author), Nagle, T.J. (author), Burke, K.B. (author), Fell, C.J. (author), Vak, D. (author), Singh, T.B. (author), Watkins, S.E. (author), Galagan, Y.O. (author), Manor, A. (author), Katz, E.A. (author), Kim, T. (author), Kim, K. (author), Sommeling, P.M. (author), Verhees, W.J.H. (author), Veenstra, S.C. (author), Riede, M. (author), Greyson Christoforo, M. (author), Currier, T. (author), Shrotriya, V. (author), Schwartz, G. (author), Krebs, F.C. (author)
A large number of flexible polymer solar modules comprising 16 serially connected individual cells was prepared at the experimental workshop at Risø DTU. The photoactive layer was prepared from several varieties of P3HT (Merck, Plextronics, BASF and Risø DTU) and two varieties of ZnO (nanoparticulate, thin film) were employed as electron...
article 2011
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Kuik, M. (author), Vandenbergh, J. (author), Goris, L. (author), Begemann, E.J. (author), Lutsen, L. (author), Vanderzande, D.J.M. (author), Manca, J.V. (author), Blom, P.W.M. (author)
The trap-limited electron currents in poly(p-phenylene vinylene) (PPV) derivatives can be modeled using a Gaussian trap distribution that is positioned approximately 0.75 eV below the lowest unoccupied molecular orbital (LUMO) of PPV. Photothermal deflection spectroscopy measurements and internal photo-emission spectroscopy measurements confirm...
article 2011
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Li, X. (author), Smaal, W.T.T. (author), Kjellander, C. (author), van der Putten, B. (author), Gualandris, K. (author), Smits, E.C.P. (author), Anthony, J. (author), Broer, D.J. (author), Blom, P.W.M. (author), Genoe, J. (author), Gelinck, G.H. (author)
We present a systematic study of the influence of material composition and ink-jet processing conditions on the charge transport in bottom-gate field-effect transistors based on blends of 6,13-bis(triisopropyl-silylethynyl) pentacene (TIPS-PEN) and polystyrene. After careful process optimizations of blending ratio and printing temperature we...
article 2011
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Lu, M. (author), Nicolai, H.T. (author), Kuik, M. (author), Wetzelaer, G.-J.A.H. (author), Wildeman, J. (author), Palmaerts, A. (author), Blom, P.W.M. (author)
We demonstrate a solution processed bi-layer PLED based on poly(p-phenylene vinylene) derivatives using orthogonal solvents. To lower the voltage drop the hole transport layer (HTL) based on poly[2,5-bis(2-ethylhexyloxy)-co-2,5- bis(butoxy)-1,4-phenylenevinylene] (BEH/BB-PPV (1:3)) is doped with tetracyano-tetrafluoro-quinodimethane (F4TCNQ)....
article 2011
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van Breemen, A.J.J.M. (author), van der Putten, J.B.P.H. (author), Cai, R. (author), Reimann, K. (author), Marsman, A.W. (author), Willard, N. (author), de Leeuw, D.M. (author), Gelinck, G.H. (author)
An I-line photolithography process for ferroelectric polymers is developed. It is based on photocrosslinking using a bisazide photoinitiator. Patterned layers were realized down to 1-2 µm resolution. Crosslinking yields a close-to-insoluble ferroelectric polymer network that counter intuitively has similar ferroelectric properties as a...
article 2011
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Barink, M. (author), van den Berg, D. (author), Yakimets, I. (author), Giesen, P. (author), van Dommelen, J.A.W. (author), Meinders, E.R. (author)
A numerical model was developed to simulate the micro-deformations of a polymeric substrate due to lithographic processing of different layers of a transistor-like structure. The results of the model were validated with the results from experiments. The model, a mechanical-thermal-hygroscopic model, takes into account the dimensional effects of...
article 2011
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Volkov, V.V. (author), Lebedeva, V.I. (author), Petrova, I.V. (author), Bobyl, A.V. (author), Konnikov, S.G. (author), Roldughin, V.I. (author), van Erkel, J. (author), Tereshchenko, G.F. (author)
Principal approaches for the preparation of catalytic membrane reactors based on polymer membranes containing palladium nanoparticles and for the description of their characteristics are presented. The method for the development of adlayers composed of palladium nanoparticles and their aggregates on the surface of hydrophobic polypropylene...
article 2011
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van den Ende, D.A. (author), Groen, W.A. (author), van der Zwaag, S. (author)
We report on the optimisation of a recently developed high performance 0-3 piezoelectric composite comprising of the piezoelectric Lead Zirconate Titanate (PZT) powder and a liquid crystalline thermosetting matrix polymer (LCT). The matrix polymer is a liquid crystalline polymer comprising of an HBA-HNA backbone with phenylethynyl end-groups....
article 2011
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Kronemeijer, A.J. (author), Katsouras, I. (author), Huisman, E.H. (author), van Hal, P.A. (author), Geuns, T.C.T. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)
Charge transport through alkanes and para-phenylene oligomers is investigated in large-area molecular junctions. The molecules are self-assembled in a monolayer and contacted with a top electrode consisting of poly(3,4-ethylenedioxythiophene)-poly(4-styrenesulfonic acid) (PEDOT:PSS). The complete set of J(V,T) characteristics of both saturated...
article 2011
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Moonen, P.F. (author), Yakimets, I. (author), Peter, M. (author), Meinders, E.R. (author), Huskens, J. (author)
In this paper, a thermal imprint technique, double-layer nanoimprint lithography (dlNIL), is introduced, allowing complete filling of features in the dimensional range of submicrometer to millimeter. The imprinting and filling quality of dlNIL was studied on Si substrates as a model system and compared to results obtained with regular NIL (NIL)...
article 2011
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Craciun, N.I. (author), Wildeman, J. (author), Blom, P.W.M. (author), TNO Industrie en Techniek (author)
We report on the synthesis and electrical characterization of polyfluorene-triarylamine-based hole transport layers (HTLs). The solubility of the HTL can be tuned by adjustment of the chemical structure without loss of the charge transport properties. Double-layer polymer light-emitting diodes are constructed with an HTL that is not soluble in...
article 2010
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Grossiord, N. (author), Wouters, M.E.L. (author), Miltner, H.E. (author), Lu, K. (author), Loos, J. (author), Mele, B.V. (author), Koning, C.E. (author), TNO Industrie en Techniek (author)
Several series of nanocomposites were prepared using a latex-based process, the main step of which consisted of mixing an aqueous suspension of exfoliated carbon nanotubes (CNTs) and a polymer latex. In the present work, a systematic study on the electrical properties of fully amorphous (polystyrene - PS) as well as semi-crystalline (isotactic...
article 2010
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Kronemeijer, A.J. (author), Huisman, E.H. (author), Katsouras, I. (author), van Hal, P.A. (author), Geuns, T.C.T. (author), Blom, P.W.M. (author), van der Molen, S.J. (author), de Leeuw, D.M. (author), TNO Industrie en Techniek (author)
Electrical transport of a highly doped disordered conducting polymer, viz. poly-3,4-ethylenedioxythiophene stabilized with poly-4-styrenesulphonic acid, is investigated as a function of bias and temperature. The transport shows universal power-law scaling with both bias and temperature. All measurements constitute a single universal curve, and...
article 2010
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de Bruyn, P. (author), Moet, D.J.D. (author), Blom, P.W.M. (author)
Inverted polymer:fullerene solar cells with ZnO and MoO3 transport layers are demonstrated. ZnO films are prepared through spin casting of a zinc acetylacetonate hydrate solution, followed by low temperature annealing under ambient conditions. The performance of solar cells with an inverted structure is shown to be equivalent to that of...
article 2010
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Asadi, K. (author), Wildeman, J. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author), TNO Industrie en Techniek (author)
Resistive switches have been fabricated using a phase-separated blend film of ferroelectric random copolymer poly(vinylidene fluoride-co-trifluoroethylene) with the organic semiconductor regio-irregular poly(3-hexylthiophene) (rir-P3HT). Spin-coated blend films have been contacted with symmetrical Ag top and Ag bottom electrodes, yielding...
article 2010
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Barink, M. (author), van den Berg, D. (author), Yakimets, I. (author), Meinders, E.R. (author), TNO Industrie en Techniek (author)
The challenge of lithographic production of electronic circuitry on polymer foil is that deformations approaching the feature sizes of the circuitry can cause considerable overlay problems and thereby malfunctioning of the devices. The substrate foil is susceptible to several types of deformations. Accurate prediction of these deformations is of...
conference paper 2010
Searched for: subject%3A%22Polymer%22
(121 - 140 of 236)

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