US 12,439,767 B2
Field-width adjustment of cells in a photovoltaic element
Martin Pfeiffer-Jacob, Dresden (DE)
Assigned to HELIATEK GMBH, Dresden (DE)
Appl. No. 18/254,863
Filed by Heliatek GmbH, Dresden (DE)
PCT Filed Nov. 30, 2021, PCT No. PCT/DE2021/100949
§ 371(c)(1), (2) Date May 29, 2023,
PCT Pub. No. WO2022/111765, PCT Pub. Date Jun. 2, 2022.
Claims priority of application No. 10 2020 131 742.5 (DE), filed on Nov. 30, 2020.
Prior Publication US 2024/0306406 A1, Sep. 12, 2024
Int. Cl. H10K 39/12 (2023.01); H10K 30/81 (2023.01); H10K 30/88 (2023.01)
CPC H10K 39/12 (2023.02) [H10K 30/81 (2023.02); H10K 30/88 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A photovoltaic element comprising:
a number n of cells arranged on a substrate, from a first cell to an n-th cell,
wherein the cells each have a bottom electrode, a top electrode and a layer system comprising at least one photoactive layer,
wherein the layer system is arranged between the bottom electrode and the top electrode, and the cells are interconnected in series among one another;
at least one busbar connected to the first cell and/or the n-th cell by an electrically conductive contacting,
wherein the electrically conductive contacting connects the at least one busbar with the top electrode of the first cell and/or the top electrode of the n-th cell and 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,
wherein no electrically conductive contacting is formed between the top electrode and the at least one busbar in regions between individual via points,
wherein a separate surrounding zone around each of the via points, in a surrounding circle with a diameter of less than A/2, is not photoactive or is at least photoactive to a reduced extent,
wherein each of the n cells has in each case a specific width B and a specific length L,
wherein the first cell of the n cells and/or the n-the cell of the n cells has a larger width B in comparison with the cells 2 to n−1, and the n cells each have an identical length L,
wherein either the bottom electrode or the top electrode in the surrounding zones around the via points is electrically conductively isolated from the respective electrode in the rest of the layer system of the first cell and/or of the n-th cell in each case by a closed structuring line, and
wherein the closed structuring line is in each case formed in a horizontal direction with respect to the layer system around a complete circumference of the via points with the surrounding zones around the via points, and is formed in a vertical direction with respect to the layer system by exactly one selected from the bottom electrode or the top electrode.