Metal Halide Perovskites for Photocatalytic Solar-to-Chemical Energy Conversion

The richness and complexity of physical and chemical processes in perovskites make correlative investigations necessary for a comprehensive understanding on perovskites and their optoelectronic devices. That includes surface, morphology, chemical composition, photoluminescence, electroluminescence, electrical responses and so on. A major drawback of most perovskite materials, however, lays in their instability under operating conditions, which is not a secret. Next to the great importance of surface engineering to in stabilizing perovskites, it is also beneficial in improving their physical properties.Besides the importance of surfaces and interfaces, crystal morphology (in particular at the nanoscale) and local stoichiometry also greatly influence the material properties. By doing the work on surface and interface engineering for perovskite optoelectronic nanomaterials, revenues in stability improvements and in property engineering can be envisaged.