Electrical, optical and electrochromic properties of Ti:WO3 thin films deposited by the pulsed chemical spray technique

Analysis of optical dispersion parameters and electrochromic properties of manganese-doped Co3O4 dendrite structured thin films

“…Therefore the Mn substitutional doping effectively increases the charge mobility as the grain boundaries severely restrict the motion of charge carriers. Further increase in Mn concentration to 8 at.% (MC-3) leads to a decline of electrical conductivity as the excess Mn content segregates at grain boundaries which in turn contributes to trapping of charge carriers.The obtained results are in accordance with the literature[43].Fig. 9shows the Arrhenius behavior (ln ρ vs 1000/T(K) ) of Co 3 O 4 and Mn-doped Co 3 O 4 films.…”

Nano-particles (NPs) of WO3-type compounds by polyol route with enhanced electrochromic properties

“…This discovery performed on WO3 thin layers, aroused great interest for the study of this material shaped as thin films allowing high transparency and then led to the development of electrochromic devices based on WO3 active layers [10]. In the literature, the deposition of WO3 films has been reported using various methods, including radio frequency sputtering [18], pulsed laser deposition [13,21], chemical evaporation deposition [22], spray pyrolysis [23] or sol-gel [24]. Obviously, the thickness, the roughness, the density and the crystallite size of the WO3 as-prepared films (amorphous state is also largely studied and compared with crystalline layers [25,26]) have a strong impact on their optical properties.…”

Nanoparticles (NPs) of WO3-x Compounds by Polyol Route with Enhanced Photochromic Properties

“…Different synthesis routes are used for the preparation of WO 3 oxides in the literature. Different approaches can be conducted for the direct obtaining of thin or thick films on a substrate, such as pulsed laser deposition [14], chemical vapor deposition [23] or spray pyrolysis [24]. Synthesis processes allows for the development of powders and suspensions by precipitation [25], hydrothermal [26] or polyol routes [27].…”