Photovoltaic device and associated fabrication method

A photovoltaic device comprising:

• a plurality of photovoltaic cells, separated from each other;
• a support receiving the cells;
• and
• a light guide in contact with the cells and comprising a primary guide with a proximal surface that is proximal to the cells, where the proximal surface is oriented towards the cells and the support,
• wherein the photovoltaic device comprises, between the cells, areas located between the support and the primary guide which comprise a material with an index of refraction less than that of the proximal surface, where the material is in contact with the proximal surface,
• wherein the support and the proximal surface of the primary guide are separated by a distance between 1 μm and 20 μm;
• wherein the light guide comprises a plurality of secondary guides separated from each other by the material where each secondary guide is interposed between the proximal surface of the primary guide and a photovoltaic cell;
• and
• wherein each secondary guide is in direct contact with a photovoltaic cell at one extremity of each secondary guide and in direct contact with the proximal surface of the primary guide at another extremity of each secondary guide.