InSe as a case between 3D and 2D layered crystals for excitons
InSe as a case between 3D and 2D layered crystals for excitons
Abstract InSe is a promising material in many aspects where the role of excitons is decisive. Here we report the sequential appearance in its luminescence of the exciton, the biexciton, and the P-band of the exciton-exciton scattering while the excitation power increases. The strict energy and momentum conservation rules of …