Abstract: Photovoltaic cell comprising, an assembly comprising a substrate, first and second passivation layers covering opposite faces of the substrate and also lateral faces of the substrate, and first and second charge-collecting layers; a first layer of TCO disposed against the first main face of the assembly and such that edges of the first main face of the assembly are not covered by the first layer of TCO; a second layer of TCO covering the whole of the second main face of the assembly; a non-reflective coating partly covering the first and/or second charge-collecting layers on the lateral faces of the substrate and not covered by the second layer of TCO, and also covering the edges of the first main face.

Abstract: Photovoltaic cell comprising: an assembly comprising a substrate, first and second passivation layers covering opposite faces of the substrate and also lateral faces of the substrate, and first and second charge-collecting layers; a first layer of TCO disposed against the first main face of the assembly and such that edges of the first main face of the assembly are not covered by the first layer of TCO; a second layer of TCO covering the whole of the second main face of the assembly; a non-reflective coating partly covering the first and/or second charge-collecting layers on the lateral faces of the substrate and not covered by the second layer of TCO, and also covering the edges of the first main face.

Abstract: A voltage sensor comprises a helicoidal winding formed by an optic fiber having at least one zone sensitive or sensitized to an electrical field having a 2nd order non-linear electro optic effect. The sensitization process of the optic fiber can be achieved by a polarization process under an electric field. The voltage sensor preferably comprises a device enabling the electrical field lines to be homogenized in the region where the helical winding is located. The phase difference induced by the optic wave by electro optic effect caused by the electrical field and representative of the voltage to be measured, can be measured by polarimetric or interferometric detection.