O-Flexx Technologies Gmbh

Nikolay Iosad

Gerhard Span

Arwed Siegloch

Juergen Haferkamp

A thermoelectric element having high thermal resistance and requiring less semiconductor material than a conventional thermoelectric element with comparable performance comprises a substrate having a substrate front side and a substrate rear side opposite the substrate front side, a first contact, applied as a layer to the substrate front side, a second contact, applied as a layer to the substrate front side, a cut-off between the first and second contact which thermally and electrically separates the first and second contact from one another, and a thermoelectrically active layer having a top side and a bottom side, which are connected to one another by lateral delimiting surfaces, wherein the thermoelectrically active layer is arranged in the cut-off in such a way that the bottom side is on the substrate front side, and one of the lateral delimiting surfaces is against the first contact and one of the lateral delimiting surfaces is against the second contact. The invention further relates to a method for producing the thermoelectric element.

Thermoelectric element

A thermoelectric element includes a first thermoelectric layer and a second thermoelectric layer, wherein a p-n junction is formed when the layers are formed. To specify a generic thermoelectric element that is suitable for a series connection in a thermoelectric generator without cabling, according to the invention&#x2014;a substrate comprises a first and second contact surface on a cold side and a third contact surface on a hot side of the substrate. A temperature gradient can be applied between the contact surfaces on the cold and hot side. The first thermoelectric layer of the thermoelectric element is arranged on the substrate and connects a second contact surface to a third contact surface. The second thermoelectric layer of the thermoelectric element is arranged on the first thermoelectric layer, the p-n junction thereby being formed, and is connected to the first contact surface. The invention further relates to a method for producing such a thermoelectric element.

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Taunusstein, Germany

Nikolay Iosad