In this paper. we investigate the global existence and large time behavior of entropy solutions to one-dimensional unipolar hydrodynamic model for semiconductors in the form of Euler-Possion equations with time and spacedependent damping in a bounded interval. Firstly. we prove the existence of entropy solutions through vanishing viscosity method and compensated compactness framework. https://www.diegojavierfares.com/hot-savings-Salamander-Chameleon-Collection-Miami-347-Quad-AV-Cabinet-High-Gloss-White-with-Black-Glass-Top-big-savings/