MORTIMER, R.J., 2013. Switching colors with electricity. American Scientist 101 (1), pp. 38-45.
In response to a small electrical voltage
(typically around 1 volt), electrochromic
materials will change, evoke
or bleach their color. The electricity induces
in the material a process of either
reduction (gain of electrons) or oxidation
(loss of electrons). A chemical has a characteristic
range of energies over which
it will interact with wavelengths in the
electromagnetic spectrum, but these
reduction or oxidation processes (collectively
called redox reactions) alter the
energy bands the chemical will absorb.
In electrochromic materials, the change
corresponds to the visible region of the