Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V.

Schott Ag

Andreas Georg

Wolfgang Graf

Thomas Kuckelkorn

Christina Hildebrandt

Volker Wittwer

Andreas Gombert

Andreas Hinsch

Michael Niggemann

Franz Brucker

Kamel Silmy

Michael Koehl

Anneke Hauch

Ludwig Thomas

Jan Schulte-Fischedick

The radiation-selective absorber coating () has two barrier layers (), an IR-reflecting layer () arranged thereon, an absorption layer () arranged above the IR-reflecting () and an antireflection layer () over the absorption layer (). The absorber tube () is a steel tube () with the radiation-selective absorber coating () applied to the outside thereof. In the process of coating the absorber tube () a first oxide barrier layer () is applied to a steel tube by thermal oxidation; a second barrier layer () is then applied by physical gas phase deposition of silicon with supply of oxygen; the IR-reflecting layer () is then applied by gas phase deposition of gold, silver, platinum or copper; the absorption layer () is then applied by deposition of aluminum and molybdenum; and a final antireflection layer () is applied by deposition of silicon with supply of oxygen.

Radiation-selective absorber coating, absorber tube and process for production thereof

Disclosed is a solar cell having at least one photovoltaic layer made of an organic material, in particular a polymer material, which absorbs light and in which electron-hole pairs can be produced, said solar cell having two opposite layer surfaces of which one is connected with at least one hole-receiving layer produced inside said photovoltaic layer and the other is connected with at least one electron-receiving layer produced inside said photovoltaic layer, as well as having electrode areas En and Ep, of which one said electrode area is electrically contacted to said hole-receiving layer and the other said electrode area is electrically connected to said electron receiving layer.

Solar cell with organic material in the photovoltaic layer and method for the production thereof

The radiation selective absorber coating of the invention includes two or more barrier layers arranged over each other on a substrate surface, an infrared-range reflective layer arranged on the two or more barrier layers, and at least an absorption layer arranged over the infrared-range reflective layer and a final antireflection layer arranged over the absorption layer. The absorber pipe, especially for a parabolic trough collector, is a steel pipe, on whose outer side the radiation selective absorber coating is applied. In the method of making the absorber pipe a first oxide barrier layer is provided on the outer side of the steel pipe by thermal oxidation, and then a second barrier layer, an infrared-range reflective layer, an absorption layer and a final antireflection layer are applied by gas-phase physical deposition.

Radiation selective absorber coating for an absorber pipe, absorber pipe with said coating, and method of making same

The present invention relates to a photovoltaically self-charging storage system having a layer structure in which a first material ( ), which forms a first redox system, a second material ( ), which forms a second redox system, and a photosensitive material ( ) are arranged in or between a first ( ) and a second electrically conductive layer ( ). At least one of the electrically conductive layers ( ) is transparent for visible light. The first and the second material ( ) are each in electrical contact with one of the electrically conductive layers ( ) and arranged in the layer structure in such a manner that, due to the effect of light, the photosensitive material ( ) induces a redox reaction A &plus;B &rarr;A &plus;B , which can be reversed if light ceases. The thickness of the layer over which the first ( ) and/or second material ( ) extends is configured in such a manner that a charge storage sufficient for operating an electrical consumer is made possible. The additional introduction of a catalyst material accelerating said back reaction enables the spatial separation of the direct reaction and the back reaction. The inventive system enables the photovoltaic conversion and charge storage using a simple layer structure in an advantageous manner.

Photovoltaically self-charging storage system

The present invention relates to a glazing element for facing building facades or window systems, in particular for motor vehicles, trains or aircraft, having at least two panes, which enclose an intermediate space, and on one pane surface facing said intermediate space a coating buildup is provided, having an electrically conductive layer applied to one pane surface, thereupon an electrochromic, and thereupon an ion-conducting and thereupon an electrocatalytic layer. The invention is distinguished by the fact that, in addition to the coating buildup in the intermediate space, which is free of water, solely a reducing or oxidizing gas or gas mixture comprising a reducing or an oxidizing gas or a gas mixture comprising a reducing or an oxidizing gas and an inert gas is provided and that an electric voltage of less than 1.2 volts between the electrically conductive and the electrocatalytic layer is applied.

Glazing element

Described is an optical element having a region arranged on a first substrate and comprising at least one layer, the region containing a reactive material, a dye, and ion storage, whereby a redox system and at least one ion are present in the ion storage. The dye is hereby in contact with the reactive material, either directly or by means of a conductive layer, such that an optically induced charge transfer flow (forward reaction) can be achieved from the dye to the reactive material, either directly or by means of the conductive layer within the region that comprises at least one layer. A charge carrier return flow (reverse reaction) can occur via the same interface as the forward reaction, or alternatively, via external wiring and a second electrode. The external wiring can contain a switch.

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Freiburg, Germany

Andreas Georg