The present project is intended the development of a generic wet processes for the formation of alternative thin film absorber layers for solar cells. The focus is on Cu2ZnSn (S, Se) 4 (CZTS) as the absorber material and to processes based on printing of an precursorinkt which is then converted to a dense thin film. Important aspects are gaining fundamental knowledge about the stabilization of innovative precursordispersies and sintering / annealing processes precursors. and scalability in terms of synthesis, deposition and transformation of the precursors. The project results should also be transferable but different material systems (outside the context of thin film solar cells).