  In this paper, we consider ionospheric plasma consisting of weakly degenerate
electrons and heavy ions. We embrace our hydrodynamic model by including the
quantum diffraction term. By employing Sagdeev's pseudo-potential method, we
obtain double layers and soliton structure. We have studied the various
parametric dependence of solitary structures and double layers. The results
thus obtained might be helpful in the studies of many high energy astrophysical
phenomena.
