Visible-Light Doping Opens Interior And Shaded Applications
Nitrogen, tungsten and copper doping shifts photocatalytic activation from the ultraviolet into visible wavelengths, which sounds like an incremental improvement and is not. Ultraviolet-dependent coatings work on sunlit exterior surfaces and nowhere else, while visible-light formulations function under interior lighting, in road tunnels and on shaded elevations. That expands addressable treated surface area by roughly 60% across a typical building. Formulation difficulty is real, since doping usually costs some quantum efficiency, and the suppliers who have solved the trade-off hold genuine advantage in the fastest growing part of this market.
Market Impact: Covers 3,200 certified regional pro








