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AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorsJoël Dufourcq, Sévak Amtablian, Nicolas Karst, Frédéric Roux
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The invention relates to a method for manufacturing a photovoltaic module comprising a plurality of solar cells in a thin-layer structure, in which the following are consecutively formed: an electrode on the rear surface (41), a photovoltaic layer (46) obtained by depositing a layer (42) of precursors and by annealing such as to convert the precursors into a semiconductor material, and another semiconductor layer (43) in order to create a pn junction with the photovoltaic layer (46); characterised in that the layer (42) is deposited in a localised manner, such as to leave free at least one area (410) of the electrode on the rear surface (41) placed between two adjacent cells, wherein the annealing step modifies said area (410) which has higher resistivity than the rest of the electrode on the rear surface (41), such as to provide electric insulation between two adjacent cells.
A process for producing a photovoltaic module comprising a plurality of solar cells in a thin-film structure, wherein produced successively in the structure are:
A photovoltaic module comprising a plurality of solar cells connected in series to a common substrate (4), each cell comprising a front-face electrode that is transparent to light, and a back-face electrode that is spaced apart from the front-face electrode by a photovoltaic layer (46) and another semiconductor layer (43), making it possible to create a p-n junction with the photovoltaic layer (46), characterized in that the back-face electrodes (41a, 41b) of two adjacent cells (5, 6) are electrically isolated by an area (410) of the back-face electrode (41) which is located between the two cells and which has a greater resistivity than the rest of the back-face electrode (41).
Dependencies are inferred from the claim text.