Zobrazeno 1 - 10
of 229
pro vyhledávání: '"H.-H. Johannes"'
Autor:
H.-H. Johannes, Björn Wiegmann, Steffen Schaumburg, Wolfgang Kowalsky, Matthias Böttger, Peter G. Jones
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 8, Iss 1, Pp 1037-1047 (2012)
Beilstein Journal of Organic Chemistry
Beilstein Journal of Organic Chemistry
The compounds 6-(pyrrol-2-yl)-2,2‘-bipyridine, 2-(pyrrol-2-yl)-1,10-phenanthroline and 2-(2-(N-methylbenz[d,e]imidazole)-6-(pyrrol-2-yl)-pyridine were synthesized by using an in situ generated boronic acid for the Suzuki coupling. Crystals of the p
Akademický článek
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Akademický článek
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Autor:
Eike Becker, Thomas Riedl, Wolfgang Kowalsky, Torsten Rabe, H.-H. Johannes, Benjamin S. Nehls, D. Schneider, M. Hoping, Thomas Weimann, Peter Hinze, Tony Farrell, J. Wang, Ullrich Scherf
Publikováno v:
Advanced Functional Materials. 15:1188-1192
We introduce novel statistical copolymers of poly(9,9-dioctylfluorene), PFO, which contain various concentrations of 6,6'-(2,2'-octyloxy-l ,1 '-binaphthyl) spacer groups. We demonstrate that, owing to the large dihedral angle (> 60°) between neighbo
Publikováno v:
Proceedings of the IEEE. 93:1321-1329
After the demonstration of the first organic FET in 1986, a new era in the field of electronic began: the era of organic electronics. Although the reported performance of organic transistors is still considerably lower compared to that of silicon tra
Autor:
N. Meyer, Michael Heuken, H.-H. Johannes, Cameliu Himcinschi, Wolfgang Kowalsky, Dietrich R. T. Zahn, G. Strauch, Marion Friedrich, S. Hartmann, M. Gersdorff, M. Schwambera
Publikováno v:
Applied Physics A. 80:551-555
Thin films of Tris(8-hydroxyquinoline)-aluminum(III) (Alq3) and N,N′-Di-[(1-naphthyl)-N,N′-diphenyl]-(1,1′-biphenyl)-4,4′-diamine (α-NPD ) were deposited on large-area silicon substrates by means of the recently developed organic vapor phase
Publikováno v:
Applied Surface Science. 234:22-27
Heterostructure devices using three different organic materials, namely PTCDA (3,4,9,10-perylenetetracarboxylic dianhydride), DiMe-PTCDI (dimethyl-3,4,9,10-perylene tetracarboxylic diimide) and CuPc (copper phthalocyanine) evaporated on GaAs substrat
Autor:
Torsten Benstem, Thomas Riedl, Wolfgang Kowalsky, Thomas Weimann, Thomas Dobbertin, Eike Becker, S. Hartmann, J. Wang, H.-H. Johannes, D. Schneider, D. Metzdorf, Dirk Heithecker, Peter Hinze
Publikováno v:
Applied Physics B. 77:399-402
We report on a wavelength-tunable organic solid-state laser based on a second-order distributed-feedback (DFB) resonator design with the guest–host system Alq3:DCM2 as the gain medium. The laser wavelength can be shifted from 608.9 to 646.5 nm by v
Enhanced mixing characteristics of GaAs/3,4,9,10-perylenetetracarboxylic dianhydride Schottky diodes
Publikováno v:
Journal of Physics: Condensed Matter. 15:S2611-S2618
The influences on the mixing properties of GaAs Schottky diodes containing an organic 3,4,9,10-perylenetetracarboxylic dianhydride layer were investigated. The frequency conversion ability of the devices was determined by considering the I–V charac
Autor:
M. Brandes, Thomas Riedl, Wolfgang Kowalsky, R. Parashkov, H.-H. Johannes, Eike Becker, G. Ginev
Publikováno v:
Applied Physics Letters. 85:5751-5753
Low-cost, large-area patterning of organic field-effect transistors with high-resolution is a subject of ongoing investigations. Here, we present a concept of patterning vertical-channels organic transistors using excimer laser. The channel length is