Glazing comprising a substrate coated with a stack comprising a functional layer made from silver and a thick blocking underlayer made from TiOx

A glazing comprising

• a transparent substrate coated with a stack of thin layers comprising at least one silver-based functional metal layer and at least two antireflective coatings, each antireflective coating comprising at least one dielectric layer, so that each functional metal layer is positioned between two antireflective coatings, wherein the stack comprises:
• at least one antireflective coating comprising a dielectric layer capable of generating defects of hole type, the dielectric layer being selected from the group consisting of titanium oxide that comprises at least 95.0% by weight of titanium dioxide, niobium oxide that comprises at least 95.0% by weight of niobium oxide, the antireflective coating being located below a silver-based functional metal layer, and
• at least one dielectric layer having a stabilizing function based on zinc oxide,
• at least one blocking layer based on titanium oxide exhibiting a thickness of greater than 2.5 nm, the blocking layer being located between the antireflective coating comprising a dielectric layer capable of generating defects of hole type and a silver-based functional metal layer, and immediately in contact with the dielectric layer having a stabilizing function,
• the dielectric layer capable of generating defects of hole type having a thickness of greater than 5 nm and being separated from the functional layer by one or more layers, the thickness of the one or more layers interposed between the layer capable of generating defects of hole type and the functional layer being at most 20 nm.