THIN-LAYER PHOTOVOLTAIC DEVICE, IN PARTICULAR FOR SOLAR GLAZING

摘要

Thin-film photovoltaic device (1) comprising a substrate on which is deposited a photovoltaic film (3) comprising a first conductive layer forming a back electrical contact, a second photoactive layer that is absorbent in the solar spectrum and that is based on an inorganic material, and a third layer made of a transparent conductive material forming a front electrical contact, said photovoltaic film being divided to form a plurality of individual and interconnected photovoltaic cells (30), wherein it comprises a plurality of individual holes (31) at least passing through the first and second layers of the photovoltaic film in each cell, each hole having dimensions in the principle plane comprised between 10 nanometres and 400 microns, each hole being separated from the closest adjacent hole by a distance comprised between 5 nanometres and 400 microns, and each cell having an apertured area, corresponding to the area of the holes arranged in said cell in the principle plane, comprised between 10 and 90% of the total area of the cell in said principle plane, and preferably between 30 and 70%. The present invention is applicable to the field of solar glazing units.

主权项

1. A thin-layer photovoltaic device comprising a substrate on which there is disposed a photovoltaic film composed of a superposition of layers distributed along a plane called main plane and comprising at least a first conductive layer forming a rear electrical contact, a second photoactive layer absorbing in the solar spectrum based on inorganic material, a third layer made of transparent conductive material forming a front electrical contact, said photovoltaic film being divided so as to form a plurality of individual and interconnected photovoltaic cells, each cell being connected in series or in parallel to one or several adjacent cell(s) and electrically insulated from the other adjacent cells,
said device comprising a plurality of individual perforations passing through at least the first and the second layers of the photovoltaic film in each cell, each perforation presenting dimensions in the main plane comprised between 10 nanometers and 400 micrometers, each perforation being distant from the nearest adjacent perforation at a distance comprised between 5 nanometers and 400 micrometers, and in that each cell presents a perforated surface, corresponding to the surface of the perforations disposed in said cell in the main plane, which is comprised between 10 and 90% of the total surface of the cell in this same main plane, preferably between 30 and 70%.