Abstract: A photovoltaic module is specified, comprising: a cylindrical light-transmissive tube enclosing an interior and having a main extension direction and a curved inner surface facing the interior, and a mechanically flexible photovoltaic component comprising a solar cell arrangement applied on a carrier film, wherein the photovoltaic component is arranged in the interior, the solar cell arrangement has a curvature, wherein the curvature follows the curved course of the inner surface of the tube at least in places and the solar cell arrangement at least partly covers the inner surface, wherein the covered inner surface forms a light passage surface of the photovoltaic module.

Abstract: A photovoltaic module is specified, comprising: a cylindrical light-transmissive tube enclosing an interior and having a main extension direction and a curved inner surface facing the interior, and a mechanically flexible photovoltaic component comprising a solar cell arrangement applied on a carrier film, wherein the photovoltaic component is arranged in the interior, the solar cell arrangement has a curvature, wherein the curvature follows the curved course of the inner surface of the tube at least in places and the solar cell arrangement at least partly covers the inner surface, wherein the covered inner surface forms a light passage surface of the photovoltaic module.

Abstract: A module, for example a photovoltaic module, includes among other things a glass plate (11) as a front cover facing the direction of light incidence, a component (photovoltaic element) (15), and a plastic layer (14) provided as an embedding material, wherein the surface of the glass plate (11) on the side facing the plastic layer (14) is treated such that the index of refraction of the layer produced by the surface treatment has a value between the index of refraction of the glass of the cover (11) and the index of refraction of the plastic material of the layer (14).

Abstract: Plate glass, in particular soda-lime plate glass, is treated with potassium water glass in order to alter the optical properties of soda-lime plate glass, in particular its reflection behaviour. The soda-lime plate glass is thermally treated after application of potassium water glass in order to achieve additional hardening of the soda-lime plate glass. The treated plate glass can be used, in particular, for cover plates of photovoltaic modules.