Abstract: A deposition apparatus for coating a flexible substrate is described. The deposition apparatus comprises a first spool chamber housing a storage spool for providing the flexible substrate, a deposition chamber arranged downstream from the first spool chamber, and a second spool chamber arranged downstream from the deposition chamber and housing a wind-up spool for winding the flexible substrate thereon after deposition. The deposition chamber comprises a coating drum for guiding the flexible substrate past a plurality of deposition units including at least one deposition unit having a graphite target. The coating drum is connected to a device for applying an electrical potential to the coating drum.

Abstract: A deposition apparatus for coating a flexible substrate is described. The deposition apparatus includes a first spool chamber housing a storage spool for providing the flexible substrate, a deposition chamber arranged downstream from the first spool chamber, and a second spool chamber arranged downstream from the deposition chamber and housing a wind-up spool for winding the flexible substrate thereon after deposition. The deposition chamber includes a coating drum for guiding the flexible substrate past a plurality of deposition units including at least one deposition unit having a graphite target. Further, the deposition chamber includes a coating treatment device configured to densify a layer deposited on the flexible substrate.

Abstract: Method of depositing a TCO layer on a substrate, of depositing precursors of a solar cell and precursors of a solar cell are described. The methods includes DC sputtering a ZnO-containing transparent conductive oxide layer over the substrate, the substrate having a size of 1.4 m2 or above and texturing the ZnO-containing transparent conductive oxide layer, wherein the textured ZnO-containing transparent conductive oxide layer has a root means square roughness of 60 nm or below.