Nickel-oxide Thin Films
Electrochromic efficiency of nickel-oxide thin films strongly depends on a degree of thermal treatment of the prepared films. With the help of thermogravimetric measurements of thin films, deposited on a substrate, temperature and duration of thermal treatement was optimized.
Picture shows a TEM image of an optimized film, deposited on a conducting substrate. The thickness of the film is less then 50 nm and the size of NiO grains reaches up to 5 nm in diameter. NiO grains are embedded in an amorphous phase.