Substrate, in particular glass substrate, supporting at least one stack of a photocatalytic layer and a sublayer for the heteroepitaxial growth of said layer
AssigneeSaint-Gobain Glass France
InventorsLaurent Labrousse, Nicolas Nadaud
Life of this patent
Estimating the term…
Abstract
The invention relates to a structure, comprising a substrate supporting a layer with a photocatalytic and anti-soiling property on at least part of the surface thereof, said layer being based on titanium dioxide (TiO2) which is at least partially crystallized in the anatase form thereof. Said structure is characterised in comprising a sublayer (SC) directly under at least one TiO2 layer, said sublayer having a crystallographic structure which provides assistance to crystallization by heteroepitaxial growth in the anatase form of the TiO2-based upper layer, the photocatalytic property being obtained without any heating step.
Claims14
A structure, comprising:
- a substrate;
- and
- an antisoiling layer having a photocatalytic property formed on at least part of a surface of the substrate;
- wherein:
- the antisoiling layer comprises a titanium dioxide-based layer and an underlayer (UL) immediately beneath the titanium dioxide-based layer;
- the titanium dioxide-based layer comprises titanium dioxide at least partly crystallized in anatase form;
- the underlayer (UL) has a crystallographic structure that assisted in crystallization of the titanium dioxide, by heteroepitaxial growth in the anatase form, of the titanium dioxide-based layer;
- and
- the photocatalytic property is obtained without performing a heating step.
Dependencies are inferred from the claim text.