  The possibility of the formation of an electron-hole liquid in the type II
heterostructures based on monolayers (bilayers) of transition metal
dichalcogenides is considered. It is indicated that additional valleys in the
conduction band, which are present in bilayers, are required for its
observation. The binding energy of the interlayer exciton is found by the
variation method. An analytical formula is found for the shape of the
recombination line of the electron-hole liquid.
