| abstract |
Methods of depositing a TCO layer on a substrate and precursor for solar cells are described. A method of depositing a TCO layer 102, 204, 404, 604 on a substrate 102, 8091 includes providing a glass substrate having a first alkali metal concentration, conditioning the glass substrate, wherein the conditioning comprises at least one step selected from the group consisting of: applying a liquid to the substrate to form a layer with a second alkali metal layer concentration higher than the first alkali metal concentration, and depositing a layer to form a layer with a second alkali metal layer concentration higher than the first alkali metal concentration, and depositing a TCO layer over the conditioned substrate |