Thin film technology is a key technology in many high tech sectors today and plays a crucial role in the development of photovoltaics. It allows to control of a very broad set of material (e.g.electronic or optical) properties down to the atomic level, yet can be compatible with high-volume low-cost manufacturing. The Catlab project aims to exploit exactly these characteristics of thin film technology for use in catalytic reactions, especially for chemical energy carriers, such as (green) hydrogen and carbon- or nitrogen-based chemicals derived from it. [more]