Why are there coatings with an undefined (n/a) ITO film thickness in the chart?
All coatings without defined ITO-film thickness are made in a small coating machine. Those ITO-coatings are mainly based on “exotic” substrate materials and we don’t make them at very large quantities like our CEC-S or CEC-P coatings for example. In the small coating machine, only the transmission and the square resistances can be controlled. The film thickness is a function of these parameters. It is not a process controlled parameter. We therefore do not make exact calls on the film thickness of these coatings.
