Search Results - "Scherf, U"

Direct arylation polycondensation as simplified alternative for the synthesis of conjugated (co)polymers by Kowalski, S., Allard, S., Zilberberg, K., Riedl, T., Scherf, U.

“…Future application of conjugated (co)polymers, e.g. in electronic devices, requires the availability of up-scalable synthetic procedures. “Conventional”…”
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Semiconducting Polyfluorenes-Towards Reliable Structure-Property Relationships by Scherf, U., List, E.J.W.

“…Alkylsubstituted polyfluorenes have emerged as a very attractive class of conjugated polymers, especially for display applications, owing to their pure blue…”
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Direct Ink-Jet Printing of Ag-Cu Nanoparticle and Ag-Precursor Based Electrodes for OFET Applications by Gamerith, S., Klug, A., Scheiber, H., Scherf, U., Moderegger, E., List, E. J. W.

“…The field of organic electronics has seen tremendous progress over the last years and all‐solution‐based processes are believed to be one of the key routes to…”
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The Effect of Keto Defect Sites on the Emission Properties of Polyfluorene-Type Materials by List, E.J.W., Guentner, R., Scanducci de Freitas, P., Scherf, U.

“…Keto defect sites play a key role as the source of low‐energy emission bands in polyfluorene type materials. The formation of fluorenone defect sites can be…”
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Charge Transfer Excitons in Bulk Heterojunctions of a Polyfluorene Copolymer and a Fullerene Derivative by Loi, M. A., Toffanin, S., Muccini, M., Forster, M., Scherf, U., Scharber, M.

“…The photophysical properties of blends of fluorene copolymer and the fullerene derivative PCBM are analyzed with a particular attention to photovoltaic…”
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Highly Luminescent Colloidal CdS Quantum Dots with Efficient Near-Infrared Electroluminescence in Light-Emitting Diodes by Bansal, A. K., Antolini, F., Zhang, S., Stroea, L., Ortolani, L., Lanzi, M., Serra, E., Allard, S., Scherf, U., Samuel, I. D. W.

“…Quantum dots are of growing interest as emissive materials in light-emitting devices. Here first we report the formation of highly luminescent organic capped…”
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Ultrafast Single-Molecule Fluorescence Measured by Femtosecond Double-Pulse Excitation Photon Antibunching by Schedlbauer, J, Wilhelm, P, Grabenhorst, L, Federl, M. E, Lalkens, B, Hinderer, F, Scherf, U, Höger, S, Tinnefeld, P, Bange, S, Vogelsang, J, Lupton, J. M

“…Most measurements of fluorescence lifetimes on the single-molecule level are carried out using avalanche photon diodes (APDs). These single-photon counters are…”
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Solution-processed ambipolar organic field-effect transistors and inverters by de Leeuw, D. M, Meijer, E. J, Setayesh, S, van Veenendaal, E, Huisman, B. -H, Blom, P. W. M, Hummelen, J. C, Scherf, U, Klapwijk, T. M

“…There is ample evidence that organic field-effect transistors have reached a stage where they can be industrialized, analogous to standard metal oxide…”
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High intrachain hole mobility on molecular wires of ladder-type poly(p-phenylenes) by Prins, P, Grozema, F C, Schins, J M, Patil, S, Scherf, U, Siebbeles, L D A

“…We have studied the high-frequency (34 GHz) mobility of positive charge carriers on isolated ladder-type polymer chains in dilute solution. We find that the…”
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Effect of Molecular Weight and Annealing of Poly(3-hexylthiophene)s on the Performance of Organic Field-Effect Transistors by Zen, A., Pflaum, J., Hirschmann, S., Zhuang, W., Jaiser, F., Asawapirom, U., Rabe, J. P., Scherf, U., Neher, D.

“…The optical, structural, and electrical properties of thin layers made from poly(3‐hexylthiophene) (P3HT) samples of different molecular weights are presented…”
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Tunable organic thin-film laser pumped by an inorganic violet diode laser by Riedl, T., Rabe, T., Johannes, H.-H., Kowalsky, W., Wang, J., Weimann, T., Hinze, P., Nehls, B., Farrell, T., Scherf, U.

“…We demonstrate an organic thin-film distributed feedback (DFB) laser pumped by an inorganic violet laser diode ( λ = 406 nm ) . The active organic medium…”
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Semiconducting Polymer Nanospheres in Aqueous Dispersion Prepared by a Miniemulsion Process by Landfester, K., Montenegro, R., Scherf, U., Güntner, R., Asawapirom, U., Patil, S., Neher, D., Kietzke, T.

“…A miniemulsion process has been used to create layers of conjugated semiconducting polymers from aqueous suspensions. Layers of particles with sizes ranging…”
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The Origin of Green Emission in Polyfluorene-Based Conjugated Polymers: On-Chain Defect Fluorescence by Romaner, L., Pogantsch, A., Scandiucci de Freitas, P., Scherf, U., Gaal, M., Zojer, E., List, E.J.W.

“…The low emission band at 2.2–2.3 eV in polyfluorene‐based conjugated materials is studied by various spectroscopic methods on defined copolymers of…”
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On-Chain Fluorenone Defect Emission from Single Polyfluorene Molecules in the Absence of Intermolecular Interactions by Becker, K., Lupton, J. M., Feldmann, J., Nehls, B. S., Galbrecht, F., Gao, D. Q., Scherf, U.

“…The emission of semiconducting polyfluorenes is often accompanied by an undesired feature in the green spectral region. Whereas a number of previous…”
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Improving the Performance of Polyfluorene-Based Organic Light-Emitting Diodes via End-capping by Miteva, T., Meisel, A., Knoll, W., Nothofer, H. G., Scherf, U., Müller, D. C., Meerholz, K., Yasuda, A., Neher, D.

“…Efficient deep‐blue electroluminescence(EL) is obtained via end‐capping polyfluorene (PF) homopolymers with hole‐transporting moieties (HTMs). Strong evidence…”
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Ultrafast dynamics of charge carrier photogeneration and geminate recombination in conjugated polymer:fullerene solar cells by MüLLER, J. G, LUPTON, J. M, FELDMANN, J, LEMMER, U, SCHARBER, M. C, SARICIFTCI, N. S, BRABEC, C. J, SCHERF, U

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Alternating Binaphthyl−Thiophene Copolymers: Synthesis, Spectroscopy, and Photophysics and Their Relevance to the Question of Energy Migration versus Conformational Relaxation by Pina, J, Seixas de Melo, J, Burrows, H. D, Maçanita, A. L, Galbrecht, F, Bünnagel, T, Scherf, U

“…The synthesis and a comprehensive spectroscopic and photophysical study are presented of four alternating binaphthyl−oligothiophene copolymers (DP: 10−15…”
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A nearly diffraction limited surface emitting conjugated polymer laser utilizing a two-dimensional photonic band structure by Riechel, S., Kallinger, C., Lemmer, U., Feldmann, J., Gombert, A., Wittwer, V., Scherf, U.

“…We have fabricated a mechanically flexible conjugated polymer laser utilizing distributed feedback due to a two-dimensional photonic band structure. An…”
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Influence of Solvent Quality on the Self-Organization of Archetypical Hairy Rods−Branched and Linear Side Chain Polyfluorenes: Rodlike Chains versus “Beta-Sheets” in Solution by Knaapila, M, Garamus, V. M, Dias, F. B, Almásy, L, Galbrecht, F, Charas, A, Morgado, J, Burrows, H. D, Scherf, U, Monkman, A. P

“…We report on the nanoscale structure and solvent-induced phase behavior of two, nearly similar π-conjugated hairy-rod polymers, branched side chain…”
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Circularly Polarized Electroluminescence from Liquid-Crystalline Chiral Polyfluorenes by Oda, M., Nothofer, H.-G., Lieser, G., Scherf, U., Meskers, S. C. J., Neher, D.

“…Circularly polarized electroluminescence (CPEL) has potential application in optical data storage and processing. It was recently discovered that CPEL could be…”
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