NOVELTY - Device comprises first adhesive layer having top and bottom surfaces, where first adhesive layer containing vinyl or acrylic based polymer; substrate containing polymeric layer having polymer e.g. polyamide imides, polyether imides, polyamides, and thermally conductive filler; second adhesive layer having top and bottom surface, where second adhesive layer containing vinyl or acrylic based polymer; and metal heat sink having top and bottom surface, where heat sink top surface being directly bonded to second adhesive layer bottom surface.    USE - The device used for thermally cooling while electrically insulating (claimed).    ADVANTAGE - The device provides acceptable bond strength under elevated temperatures and humidity; has excellent electrical insulation properties; can withstand relatively high voltages; provides useful resistance to degradation under exposure to light; and/or has acceptable thermal conductivity.    DETAILED DESCRIPTION - A device comprises a first adhesive layer having a top and bottom surfaces, where the first adhesive layer containing vinyl or acrylic based polymer (68-100 wt.%); a substrate containing at least one polymeric layer having a polymer (30-95 wt.%) selected from polyamide imides, polyether imides, polyaramids, polyamides, polysulfones, polyether ketones, liquid crystal polymers, polyesters, fluoropolymers, silicone resins, epoxy resins, cyanate esters, bismaleimide resins, bistriazines resins, polyphenylene sulfide and/or polyphenylene oxide, and thermally conductive filler (5-70 wt.%), where the first adhesive bottom surface is directly bonded to the substrate; a second adhesive layer having top and bottom surface, where the second adhesive layer top surface is directly bonded to the substrate opposite of the first adhesive layer, where the second adhesive layer containing vinyl or acrylic based polymer (68-100 wt.%); and a metal heat sink having top and a bottom surface, where the heat sink top surface is directly bonded to the second adhesive layer bottom surface. An INDEPENDENT CLAIM is included for a light concentrator photovoltaic assembly comprising a photovoltaic cell metalized layer; the first adhesive layer; the substrate; the second adhesive layer; the metal heat sink.