The program of the PVMD group builds up expertise in the design and fabrication technology of solar cells and other devices based on thin semiconductor films. The current focus is on amorphous and nano-crystalline silicon films fabricated at low temperatures (< 200 °C) using CVD (Chemical Vapour Deposition) techniques. The group specializes in applying advanced measurement techniques in combination with computer modeling for determination of (opto-) electronic properties, such as the density of defects in thin layers of disordered materials. The acquired expertise is used for the optimization of thin-film silicon solar cells and for the development of novel concepts using nano-structured materials for future high-efficient solar cells. A new research field of the group is directed towards the development of electronic components on flexible plastic substrates using thin-film silicon technology.