Zobrazeno 1 - 10
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pro vyhledávání: '"Herman T. Nicolai"'
Autor:
Gert-Jan A. H. Wetzelaer, Herman T. Nicolai, Dago M. de Leeuw, Martijn Kuik, Paul W. M. Blom, N. Irina Crăciun
Publikováno v:
Advanced Materials. 26:512-531
This article reviews the basic physical processes of charge transport and recombination in organic semiconductors. As a workhorse, LEDs based on a single layer of poly(p-phenylene vinylene) (PPV) derivatives are used. The hole transport in these PPV
Publikováno v:
Organic Electronics, 13(9), 1693-1699. ELSEVIER SCIENCE BV
Metal oxides as ZnO provide an interesting alternative for conventional low work function metals as electron injection layer in organic light-emitting diodes (OLEDs). However, for most state-of-the-art OLED materials the high work function of ZnO lea
Publikováno v:
Advanced Functional Materials, 22(10), 2040-2047. WILEY-V C H VERLAG GMBH
The charge transport and recombination in white-emitting polymer light- emitting diodes (PLEDs) are studied. The PLED investigated has a single emissive layer consisting of a copolymer in which a green and red dye are incorporated in a blue backbone.
Publikováno v:
Journal of Polymer Science. Part B: Polymer Physics, 49(24), 1745-1749. Wiley-Blackwell
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 suppr
Autor:
Mingtao Lu, Herman T. Nicolai, Jurjen Wildeman, Martijn Kuik, Arne Palmaerts, Gert-Jan A. H. Wetzelaer, Paul W. M. Blom
Publikováno v:
Physica Status Solidi A-Applications and materials science, 208(10), 2482-2487. WILEY-V C H VERLAG GMBH
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-pheny
Publikováno v:
Advanced Functional Materials, 21(8), 1505-1510. WILEY-V C H VERLAG GMBH
The charge transport in blue light-emitting polyspirobifluorene is investigated by both steady-state current-voltage measurements and transient electroluminescence. Both measurement techniques yield consistent results and show that the hole transport
Publikováno v:
Soft Matter, 7(5), 1702-1707. ROYAL SOC CHEMISTRY
Here we report on a combined photoluminescence and morphological study of a polymer-polymer blend composed of a copolymer of derivatives of polyspirobifluorene and polyfluorene (PBFF) and a derivative of polyphenylene vinylene (MDMO-PPV). Evidence of
Publikováno v:
Applied Physics Letters, 99(20):203303, 1-3. American Institute of Physics
Applied Physics Letters, 20, 99
Applied Physics Letters, 99(20):203303, 1-3
Applied Physics Letters, 20, 99
Applied Physics Letters, 99(20):203303, 1-3
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 transpo
Autor:
Mingtao Lu, Herman T. Nicolai, Gert-Jan A. H. Wetzelaer, Martijn Kuik, Martijn Lenes, Paul W. M. Blom
Publikováno v:
Applied Physics Letters, 98(9):093301
The recombination processes in poly(p -phenylene vinylene) based polymer light-emitting diodes (PLEDs) are investigated. Photogenerated current measurements on PLED device structures reveal that next to the known Langevin recombination also trap-assi
Publikováno v:
Physical Review B. 90
The operation of blue light-emitting diodes based on polyspirobifluorene with a varying number of N,N,N′,N′ tetraaryldiamino biphenyl (TAD) hole-transport units (HTUs) is investigated. Assuming that the electron transport is not affected by the i