  We explore the two-dimensional extended Hubbard model on the triangular
lattice in the high doping regime. On-site and nearest-neighbour repulsive
interactions are treated in a non-perturbative way by means of Extended
Dynamical Mean Field Theory. We compute the low-temperature phase diagram,
displaying a metallic phase and a symmetry-broken phase for strong intersite
repulsions. We describe the correlation effects on both single-particle and
two-particle observables in the metallic phase. Whereas single-particle spectra
feature a Hubbard satellite typical of strongly correlated systems, local
susceptibilities remain close to their non-interacting limit, even for large
on-site repulsions. We argue that this behaviour is typical of the strongly
doped case. We also report a region in parameter space with negative static
local screening.
