Pulsed laser deposition (PLD) at room temperature with a nanosecond laser was used to prepare WO3 layers on both MEMS microheater platforms and Si/SiO2 substrates. Structural characterization showed that the layers are formed of nanoparticles and nanoparticle agglomerates. Two types of layers were prepared, one at an oxygen partial pressure of 0.08 mbar and one at 0.2 mbar. The layer structure ...

Tailoring of semiconducting metal oxide nanostructures, which possess controlled pore size and concentration, is of great value to accurately detect various volatile organic compounds in exhaled breath, which act as potential biomarkers for many health conditions. In this work, we have developed a very simple and robust route for controlling both the size and distribution of spherical pores in ...

Tungsten trioxide (WO3) is always oxygen-deficient or non-stoichiometric under atmospheric conditions. Positively charged oxygen vacancies prefer to drift as well as electrons when the electric field is strong enough, which will alter the distribution of oxygen vacancies and then endow WO3 with memristive properties. In Au/WO3 nanowire/Au sandwich structures with two ohmic contacts, the axial d...

Plasma milling results in more reactive sites and a larger contact area between WO3 nanoparticles C atoms, simultaneously generats oxygen vacancies defects on the surfaces of respectively via plasma discharge as describe article, number 2200175 by Zhongchen Lu co-workers. Thus, reaction temperature for carbothermal reduction reduces significantly milling.

We report the synthesis of nanostructured tungsten trioxide (WO3) films and their electrochromic characteristics. Plate-like monoclinic WO3 nanostructures were grown directly on fluorine-doped tin oxide glass substrates by a simple and low-cost crystal-seed-assisted hydrothermal method. The growth mechanism of the film is investigated. HRTEM analysis reveals the single crystalline quality of th...

The design of optimal interfaces between photoelectrodes and catalysts is a key challenge in building photoelectrochemical cells to split water. Iridium dioxide (IrO2) is an efficient catalyst for oxygen evolution, stable in acidic conditions, and hence a good candidate to be interfaced with photoanodes. Using first-principles quantum mechanical calculations, we investigated the structural and ...

Time-resolved terahertz (THz) spectroscopy and open circuit photovoltage measurements were employed to examine the sizedependent charge carrier dynamics of tungsten oxide (WO3) particles. Specifically, films of commercially available WO3 nanoparticles (NP) and granular particles (GP) with diameters of 77 ± 34 nm and 390 ± 260 nm, respectively, were examined in air and also while immersed in 0.1...

Artificial photosynthesis is a very attractive and a desirable way to solve the rising energy demand. In order to harvest energy directly from sunlight catalyst for oxygen reduction and evolution reaction are at the core of key renewable-energy technologies including fuel cells and water splitting. Herein, tungsten oxide-reduced graphene oxide (WO3-rGO), cobalt oxidereduced graphene oxide (Co3O...