In　this　paper,　we　study　a　three-dimensional　full　hydrodynamic　model　in　a　bounded　domain　with　insulating　and　adiabatic　boundary.　The　model　takes　the　form　of　nonisentropic　Euler-Poisson　system　and　incorporates　recombination/generation　terms,　describing　the　bipolar　transport　of　hot　carriers　in　semiconductor　optoelectronic　devices.　Of　particular　concern　are　the　existence,　uniqueness　and　exponential　stability　of　thermal　equilibrium　states　to　the　model,　since　these　mathematical　results　are　rendered　useful　in　numerical　simulation　and　physical　theory　of　semiconductors.　They　are　rigorously　proved　by　the　perturbation　argument　and　energy　method.　(c)　2024　Elsevier　Inc.　All　rights　are　reserved,　including　those　for　text　and　data　mining,　AI　training,　and　similar　technologies.