S&W Armorer's School recommended a slurry of JB Bore Compound with well-shaken Break-free CLP, which has Teflon in it, being put in a revolver mechanism and then just working the double-action trigger until it produced a "buttery smooth" feel. Unlike the Teflon/hard material matrix coated onto cookware, the soft pure Teflon smears around, so it doesn't flake or chip off like the cookware coatings and can last a long time. The JB compound would polish the surface and help bind the Teflon to the surface.
But I don't recall ever hearing of someone doing that to the single-action revolver trigger or any semi-auto trigger. If you want a crisp trigger break you need some static friction, and in a semi-auto, you don't want a trigger that can be jarred off easily, so, again, some degree of friction is desirable. Also, once you've worked the Teflon into the metal surface, you won't get it out again without removing a layer of metal, so this is the kind of experiment you save for doing with a spare hammer and sear that you can replace if you get doubling or other issues.