A. Guerfi et al., CHARACTERIZATION AND STABILITY OF ELECTROCHROMIC MOO3 THIN-FILMS PREPARED BY ELECTRODEPOSITION, Journal of the Electrochemical Society, 142(10), 1995, pp. 3457-3464
Electrochemical, spectroscopic, and structural measurements were used
to characterize the electrochromic behavior and stability of electrode
posited MoO3 thin films. These films are prepared from metal/hydrogen
peroxide solution on transparent conductive glass (i.e., ITO). The as-
deposited films are partially crystalline and show an improvement in c
rystallinity after heat-treatment in air at 260 degrees C. These films
display reversible electrochromic properties from blue to clear, when
cycled in a 1 M solution of lithium perchlorate in propylene carbonat
e between -0.5 and +2.5 V. The observed effects of heat-treatment on t
he electrochromic properties are discussed and related to x-ray photoe
lectron spectroscopy analysis. The elemental depth profiles of colored
MoO3 films were analyzed by secondary ion mass spectrometry.