Topic summary
Electrochromic
Extracted from the Wikipedia article Electrochromism.
Electrochromic materials
Electrochromic materials, also known as chromophores, affect the optical color or opacity of a surface when a voltage is applied. Among the metal oxides, tungsten oxide (WO3) is the most extensively studied and well-known electrochromic material. Others include molybdenum, titanium and niobium oxides, although these are less effective optically.