Efficient electrochromic performance of nanoparticulate WO3 thin films

Influence of Dopant Concentration on the Electrochromic Properties of Tungsten Oxide Thin Films

“…For the entire scan rates, when the potential is swept from +1.5 V to -1.0 V a high cathodic current density with deep blue coloration is observed. This persistent increase in the cathodic current density specifies the reduction of W 6+ ionic state to the W 5+ state due to the intercalation of H + ions towards extreme cathodic potentials as a result of inter-valence charge transfer reactions which eventually causes the blue coloration [20]. This high negative current density observed approximately at the extreme negative potential scan is considered as the cathodic peak (spike) current density as reported in the literatures for WO 3 thin films [55,61].…”

“…When the film is deposited at RT, the collision relaxation period may not be long enough for the atoms to arrive to the ordered phase as the atoms do not gain enough kinetic energy from atomic collisions. It is proclaimed that such amorphous nature would favour electrochromic ion intercalation / deintercalation process [19,20]. The surface morphology of pure and V 2 O 5 doped thin films deposited at 100 W RF power were examined with field emission scanning electron microscope (FESEM).…”

Preparation of nanostructured tungsten trioxide thin films by high pressure sublimation and condensation

“…The coloration efficiency (CE) was obtained from the spectra shown in Fig. 5a using the formula: CE = OD/Q mentioned by Dalavi et al [10]. These results are shown in Fig.…”

Efficient synthesis of biodiesel over well-dispersed sulfated mesoporous SiO 2 colloidal spheres

“…The broad-angle XRD pattern of the resulted samples (Fig. 2d) exhibits a broad hump in the low 2θ region, which shows the amorphous nature of the material [33]. (Fig.…”