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US 12,356,785 B2Granted
Mechanically strong connections for perovskite-silicon tandem solar cells
AssigneeSwift Solar Inc.
InventorsTodd Krajewski, Tomas Leijtens
Life of this patent
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Abstract
Solar cell modules and methods of fabrication are described. In an embodiment, a pair of tandem solar cells are a step surface or trench within the top subcell of a tandem solar cell is at least partially filled with another material such as an insulator support or electrically conductive support to transfer stress away from the absorber layer of the top subcell of the tandem solar cells when stacked or connected with ribbon.
Claims13
A solar cell module comprising:
- a first tandem solar cell including:
- a first lower silicon subcell;
- a first upper perovskite subcell;
- a conductive recombination layer between the first lower silicon subcell and the first upper perovskite subcell;
- a junction layer of first conductivity type spanning over a top side of the first tandem solar cell and directly on a portion of the first lower silicon subcell, wherein a diode is formed at an interface of the junction layer and the first lower silicon subcell;
- a first step surface including a first step edge adjacent to the first upper perovskite subcell and a step floor over the junction layer where the junction layer is directly on the first lower silicon subcell;
- and
- a first electrically conductive support adjacent to the first step edge and at least partially filling the first step surface;
- and
- a second tandem solar cell including:
- a second lower silicon subcell;
- and
- a second upper perovskite subcell;
- wherein a back side of the second tandem solar cell is bonded to the top side of the first tandem solar cell with an electrically conductive bonding material, the electrically conductive bonding material positioned substantially over the first electrically conductive support.
11 more elements
Dependencies are inferred from the claim text.