Abstract:
L'invention concerne une composition de nanotubes de carbone dispersés dans un polymère conducteur, ledit polymère conducteur étant en dispersion ou en suspension dans de l'eau et/ou dans un solvant, et ladite composition comprenant en outre au moins une dispersion ou suspension d'élastomère et/ou de polymère thermoplastique. Sont aussi concernés un film ou revêtement transparent conducteur résultant de la filmification ou du dépôt de la composition selon l'invention, un procédé de préparation d'un tel film ou d'un tel revêtement, et des articles et dispositifs électronique revêtus de tels films ou revêtements, comme par exemple des cellules photovoltaïques, des écrans à cristaux liquides, des diodes électroluminescentes organiques (OLED) ou des diodes électroluminescentes polymériques (PLED), ou des écrans tactiles.
Abstract:
A foil system intended for use in an electrophoretic imaging system, the foil system being provided with a transparent foil layer, the foil layer being provided with multiple channels of the first type which extend through a part of a thickness of the foil layer from the first surface in the direction of the second surface, the foil layer being further provided with multiple channels of the second type which extend over a part of a thickness of the foil layer from the second surface in the direction of the first surface, the channels of the first type and the second type being distributed in the foil layer, such that, viewed in the axial direction of the channels, a distance is present between a part of a channel wall of each channel of the first type and a part of a channel wall of each channel wall of each channel of the second type.
Abstract:
La présente invention concerne une composition d'une couche active d'une cellule photovoltaïque organique comprenant : • - un matériau donneur d'électrons consistant en un polymère conju¬ gué; • - un matériau accepteur d'électrons consistant en un polymère; caractérisée en ce que la couche active comprend un copolymère à architecture linéaire comportant : • de deux à cinq blocs dont au moins deux blocs de nature chimique différente; • deux blocs consécutifs étant de nature chimique différente; • chaque bloc présentant une masse molaire comprise entre 500 g/ mol et 50000 g/mol. L'invention se rapporte également à un module photovoltaïque à base de cellules organiques incorporant une telle composition et à l'utilisa¬ tion de cette composition aux mêmes fins.
Abstract:
Substrate (7; 7'; 10) and devices including such a substrate, the substrate having a first surface and a second surface extending substantially in parallel to the first surface, the substrate being of a material of a first conductivity and provided with a plurality of electrically conducting channels (21) which are extending exclusively in a direction perpendicular to the first and second surfaces, said channels having a second conductivity substantially larger than the first conductivity, the substrate being provided with at least one electrode (42) on either one of the first and second surfaces, contacting at least one of said channels, the at least one electrode (42) having a predetermined minimum dimension (D) in a contact area (A) with the substrate, and mutual distances between adjacent ones of the plurality of channels (21) being smaller than said minimum dimension of said at least one electrode (42).
Abstract:
A foil layer system intended for use in an electrophoretic imaging system, comprising a first transparent foil layer having a first and a second surface which are located opposite each other, the foil layer being provided with multiple channels of the first type which extend over a part of a thickness of the foil layer from the first surface in the direction of the second surface, the system being further provided with a second foil layer having a first and a second surface which are located opposite each other, the second foil layer being provided with multiple channels of the second type which extend over a part of a thickness of the foil layer from the first surface in the direction of the second surface.
Abstract:
The present invention relates to a stable polymer composition comprising a first polymer and a second polymer, which second polymer is not compatible with the first polymer, and an amount of a copolymer comprising at least one block of a polyalkadiene and at least one block of random poly(aromatic vinyl-acrylonitrile), and in which the ratio of the block copolymer to the total polymer composition is between 1:500 and 1:50. Besides, the invention relates to the use of the above block copolymer as compatibilizer and/or as modifier for the mechanical properties of polymer compositions.
Abstract:
The invention is directed to a light emitting diode (LED) emitting light having a wavelength from 400 to 850 comprising an electroluminescing material, electrodes and optionally carrier material and/or reflecting material, said electroluminescing material comprising at least one block copolymer consisting of at least two types of blocks, active blocks sandwiched between non-active blocks, said active blocks being a pi -conjugated block of at least 2 and at most 16 monomeric units, said pi -conjugated block having a substantially uniform block length throughout the copolymer, and said non-active block having no pi -conjugation, optionally with additional electron and/or hole transport properties, to polymers suitable for preparing such LED, to oligomers for preparing said multiblock copolymers and to various processes.
Abstract:
There is disclosed a transducer and a method for generating the transducer. The transducer is formed on a substrate layer. The transducer includes a first electrode layer, a first piezoelectric layer on the first electrode layer, and a second electrode layer on the first piezoelectric layer. The first electrode layer is connected to a first electrical connector and the second electrode layer is connected to a second electrical connector. The transducer can be configured to act as an acoustic sensor or an electric potential sensor.
Abstract:
La présente invention concerne une composition comprenant un copolymère greffé constitué : - d'un tronc linéaire (1) comprenant au moins un polymère vinylique non aromatique ou une polyoléfme insaturée, et - au moins deux greffons (2), rattaché audit tronc par une liaison chimique, chacun constitué d'un polymère conjugué, caractérisée en ce que ladite composition comprend en outre : - des fullerènes et un polymère conjugué, ou - des nanotubes de carbone et/ou du graphène. L'invention se rapporte également à un module photovoltaïque incorporant une telle composition et à l'utilisation de cette composition aux mêmes fins. Enfin, l'invention se rapporte à des procédés de synthétisation des molécules formant tout ou partie de la composition selon l'invention.
Abstract:
A foil system intended for use in an electrophoretic imaging system, the foil system being provided with a transparent foil layer, the foil layer being provided with multiple channels of the first type which extend through a part of a thickness of the foil layer from the first surface in the direction of the second surface, the foil layer being further provided with multiple channels of the second type which extend over a part of a thickness of the foil layer from the second surface in the direction of the first surface, the channels of the first type and the second type being distributed in the foil layer, such that, viewed in the axial direction of the channels, a distance is present between a part of a channel wall of each channel of the first type and a part of a channel wall of each channel wall of each channel of the second type.