Improving Electrochromic Properties of WO3 Thin Film with Gold Nanoparticle Additive

The anodized crystalline WO3 nanoporous network with enhanced electrochromic properties.

We demonstrate that a three dimensional (3D) crystalline tungsten trioxide (WO(3)) nanoporous network, directly grown on a transparent conductive oxide (TCO) substrate, is a suitable working electrode material for high performance electrochromic devices. This nanostructure, with achievable thicknesses of up to 2 μm, is prepared at room temperature by the electrochemical anodization of a RF-sput...

Electrochromic switching of WO3 nanostructures and thin films

We present transmission measurements through tungsten tri-oxide nanostructures and thin films prepared by sol–gel process on micro-contact printed substrates. Identical electrochromic switching times are found for both the nanostructures and the bulk films with equal thicknesses upon intercalation of H+ ions. We attribute the large change in the transmission through nanostructures at 632 nm, wh...

Structure and Properties of Wo3 Thin Films for Electrochromic Device Application

Among transition metal oxides, tungsten trioxide is one of the most interesting materials exhibiting a wide variety of novel properties particularly in thin film form useful for advanced technological applications. It exhibits structural transformations and substoichiometric phase transitions, which attracted the attention of researchers over the past few years to explore their potential scient...

Synthesis, Humidity Sensing, Photocatalytic and Antimicrobial Properties of Thin Film Nanoporous PbWO4-WO3 Nanocomposites

A humidity sensor thin film based on nanoporous PbWO4-WO3 composites has been prepared by spin coating technique with different weight ratio of PbWO4 (Pb) and WO3 (WO) (PWWO-01, PWWO-82, PWWO-64, PWWO-46, PWWO-28, PWWO-01) and their humidity sensing properties have also been investigated at different relative humidity (RH) in the range of 5% - 98% at room temperature with dc resistance. It is f...

Development of Flexible Electrochromic Device with Thin Film Configuration

Properties of Electrodeposited WO3 Thin Films

Galvanostatic electrodeposition was used to produce transparent and amorphous WO3 films that showed color changes from clear to blue in response to the applied potential of ±1.0 V. The 61% in transmittance variation was measured at wavelength of 633 nm. The roughness of 16.7 nm was obtained by atomic force microscopy (AFM). The scanning electron microscopy (SEM) evidenced homogeneous morphology...