Heliatek Gmbh

Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Martin Pfeiffer-Jacob

Karl Leo

Olga Gerdes

Dirk Hildebrandt

Gunter Mattersteig

Andre Weiss

Christian Uhrich

Ulrike Bewersdorff-Sarlette

Karsten Walzer

Daniel D'Souza

Ludovic Coutable

John Fahlteich

Moritz Riede

Antoine Mirloup

Sylvio Schubert

Marieta Levichkova

Lars Müller-Meskamp

Michiel Top

Nina Grimm

Jan Meiß

When organic photovoltaic components are laser-structured, protuberances occur, which can protrude significantly beyond the height of the layered stack. The invention describes a technique for stabilising the laser-structured protuberances so that further processing of the semi-finished product is possible, and describes the integration of said product in a subsequent encapsulation of the OPV component.

Stabilization of laser-structured organic photovoltaics

A photovoltaic element including a number n of cells arranged on a substrate, from a first cell to an n-th cell and at least one busbar connected to the first cell and/or the n-th cell by an electrically conductive contacting. The cells each have a bottom electrode, a top electrode and a layer system including at least one photoactive layer. The layer system is arranged between the bottom electrode and the top electrode, and the cells are interconnected in series among one another. The electrically conductive contacting is formed by via points arranged in each case at specific distances A from one another in a longitudinal direction of the at least one busbar. No electrically conductive contacting is formed between the top electrode and the at least one busbar in regions between individual via points.

Field-width adjustment of cells in a photovoltaic element

The invention describes the use of polyphenols and polyamino derivatives adjacent to absorber layers on the basis of small molecules in organic optoelectronic components.

Polyphenols and polyamino derivatives in organic optoelectronic components

A compound of the general formula I wherein R1 is selected from the group consisting of H, alkoxy, alkyl, fluorinated alkyl, partly fluorinated alkyl, and aryl; R4 is selected from the group consisting of H, halogen, CN, alkoxy, alkyl, fluorinated alkyl, partly fluorinated alkyl, branched or linear, cyclic or open-chain alkyl, amino, aryl, and alkenyl; and at least one A1, A2, A3 or A4 in each case is independently the group Ia wherein each variable is as defined herein.

Organic semiconductor compound having an indol group, organic optoelectronic component comprising such a compound

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Dresden, Germany

Martin Pfeiffer-Jacob