Low Dimensional Metal Halides: Optical Ad Electronic Properties of An Emerging 2D Semiconductor Class

Low dimensional metal halides are currently under the spotlight for optoelectronic applications due to their remarkable photophysical properties. 3Dimensional compounds of similar chemical composition have been used to demonstrate highly efficient solar cells, light emitting diodes, and x-ray detectors. Very recently, 2D and quasi-2D Ruddlesden–Popper metal halide compounds, have also been explored for optoelectronic devices.<br/>Low dimensional metal halide affords specific advantages over other inorganic 2D materials such as transition metal dichalcogenides. As they are easily grown by both solution methods and vapor transport methods at low temperature, and they display a tuneable direct bandgap. In my presentation I will discuss the excitonic properties, transport and stability of two 2D perovskites based on Pb and on Sn, respectively. Concluding on the prospective for these materials in new optoelectronic devices.