A method (500) for printing on a substrate (102) for the production of a solar cell, the method comprising: printing (501) a wet pattern on the substrate (102); extracting (503) three-dimensional morphological data of the wet pattern (104) in real-time using an in-line profilometer (101); wherein the printing of the wet pattern on the substrate is controlled in real time at least in part based on previous three-dimensional morphological data obtained by extracting the three-dimensional morphological data.

A method (500) for printing on a substrate (102) for the production of a solar cell, the method comprising: printing (501) a wet pattern on the substrate (102); extracting (503) three-dimensional morphological data of the wet pattern (104) in real-time using an in-line profilometer (101); wherein the printing of the wet pattern on the substrate is controlled in real time at least in part based on previous three-dimensional morphological data obtained by extracting the three-dimensional morphological data.