Self-repairing multi-junction photovoltaic cell and method for self-repairing such a cell
AssigneeElectricite de France
InventorJean-Baptiste Puel
Life of this patent
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Abstract
A photovoltaic cell configured to enable the use of first photovoltaic stacks with perovskite absorber in a solar panel as an electrical generator on the sunlight side of the solar panel, while second photovoltaic stacks with perovskite absorber that are on the shadow side of the solar panel undergo a self-repair process during the day. A photovoltaic device includes a solar panel provided with such photovoltaic cells and further includes an electrical connection device adapted to connect electrodes of stacks with perovskite absorber that are on the sunlight side in order to create a multi-junction photovoltaic generator, the connection device being adapted to connect the electrodes of stacks on the shadow side of the solar panel to a regeneration module.
Claims12
A multi-junction photovoltaic cell comprising a photovoltaic assembly, wherein from a first face of the assembly to a second face of the assembly the multi-junction solar cell comprises:
- a first photovoltaic stack comprising a first transparent electrical contact layer, at least a first selective charge extraction layer, at least a second selective charge extraction layer and a second transparent electrical contact layer,
- a first electrode for connecting the first transparent electrical contact layer to the at least a first selective charge extraction layer of the first photovoltaic stack,
- a second electrode for connecting the second transparent electrical contact layer to the at least second selective charge extraction layer of said first photovoltaic stack,
- a first transparent insulating layer,
- a second photovoltaic stack comprising a first transparent electrical contact layer, at least a first selective charge extraction layer, at least a second selective charge extraction layer and a second transparent electrical contact layer,
- a third electrode for connecting the first transparent electrical contact layer to the at least second selective charge extraction layer of the second photovoltaic stack,
- a fourth electrode for connecting the second transparent electrical contact layer to the at least first selective charge extraction layer of said second photovoltaic stack,
- a second transparent insulating layer,
- a third photovoltaic stack comprising a first transparent electrical contact layer, at least a first selective charge extraction layer, at least a second selective charge extraction layer and a second transparent electrical contact layer,
- a fifth electrode for connecting the first transparent electrical contact layer to the at least first selective charge extraction layer of the third photovoltaic stack,
- a sixth electrode for connecting the second transparent electrical contact layer to the at least second selective charge extraction layer of said third photovoltaic stack,
- wherein
- the first photovoltaic stack and the third photovoltaic stack are photovoltaic stacks comprising a perovskite absorber,
- the second photovoltaic stack is a photovoltaic stack in which the absorber material has a lower band gap than that of the first stack and that of the third stack, and
- wherein said electrodes connecting said transparent electrical contact layers are independent of each other.
Dependencies are inferred from the claim text.