Cementitious product suitable in particular as substrate for a thin film photovoltaic module, and method of production thereof

Abstract

The present invention relates to a substrate for a thin film photovoltaic module, characterized in that it is a cementitious product with average surface roughness Ra not higher than 500 nm. The invention also relates to the cementitious product as such, the thin film photovoltaic module comprising it, and a method of moulding both of them.

1 - 9 . (canceled) 
     
     
         10 . A cementitious product with an average surface roughness Ra not higher than 500 nm. 
     
     
         11 . A method of manufacturing a cementitious product according to  claim 10 , characterized in that it comprises a step of forming said cementitious product inside a mould fed with a mixture of components of said cementitious product in a plastic state. 
     
     
         12 . A method according to  claim 11 , characterized in that said forming occurs by compression. 
     
     
         13 . A method according to  claim 11 , characterized in that said mould is at least partially coated with a material chosen from polyethylene terephthalate, polycarbonate, polyamide, polymethylmethacrylate, or other similar material capable of imparting an average surface roughness Ra not higher than 500 nm to the cementitious product during the step of moulding. 
     
     
         14 . A method according to  claim 11 , characterized in that it comprises a step of mixing said components of said cementitious product in plastic state by means of calendering prior to said mould-forming. 
     
     
         15 . A method of manufacturing a thin film photovoltaic module, characterized in that a thin film with photovoltaic properties is deposited on a substrate according to claim  1 . 
     
     
         16 . The use of a cementitious product with an average surface roughness Ra not higher than 500 nm as a film substrate in a thin film photovoltaic module.