The recruited postdoc will have to develop new metal chalcogenides and oxochalcogenides heterostructures through a combination of solid-state reactions and colloidal synthesis. The new prepared materials then will undergo multi scale structural characterizations. In a second part, the successfully synthesized heterostructures will be explored further, by measuring their ability to separate photogenerated charge carriers using time-transient photoconductivity. Finally, the most promising heterostructures will be tested for photocatalytic water splitting.