Sentences with word «photoelectrode»

The basis for this innovative structure are tiny particles of tungsten oxide which, because of their saturated yellow colour, can also be used for photoelectrodes.

Under the «Light2Hydrogen» BMBF Cluster project and an on - going «Solar H2» DFG Priority programme, a team from the HZB Institute for Solar Fuels has now developed a novel photoelectrode that solves these problems: it consists of chalcopyrite (a material used in device grade thin film solar cells) that has been coated with a thin, transparent, conductive oxide film of titanium dioxide (TiO2).

Understanding optical properties and photocarrier dynamics in emerging copper - based photoelectrodes.

In the case of clinobisvanite the orientation of crystal grains in photoelectrodes presumably play an important role owing to the ferroelectric properties of the oxide.

One possible solution, which our team has recently demonstrated for III - V photoelectrodes, is to model speciation of interfacial reaction products by coupling ambient - pressure X-ray photoelectron spectroscopy (XPS) experiments to direct simulations of XPS based on model interfaces from ab initio molecular dynamics.

This capability can improve the stability and efficiency of photoelectrode materials by applying an ultra-thin protective and catalytically active surface coating by atomic layer deposition.

Azarpira and her colleagues varied the amount of platinum in the precursor solution in order to optimize the properties of the novel composite photoelectrode device.The properties were optimal with a volumetric proportion of about 5 % platinum (H2PtCl6) in the precursor solution.»

This usually unwanted substance can be used to make photoelectrodes which split water and generate hydrogen.

We have practical experience contacting a variety of semiconductor configurations and fabricating samples into photoelectrodes suitable for PEC testing.

This capability can screen unknown photoelectrode candidate materials and, by evaluating their intrinsic bulk and interfacial properties, determine their potential to direct sunlight toward water splitting.

For example, ultrathin and pin - hole free oxide coatings have the potential to stabilize semiconductor photoelectrodes that otherwise would be unstable in aqueous acid or base.

Using high surface area (high aspect ratio) photoelectrodes opens the door to compensate low electrocatalytic activity (due to low turnover frequencies or low catalyst mass loadings) with high surface area.

This work demonstrates that protection layers significantly improved the stability of efficient III - V tandem photoelectrodes, that produce thephotovoltage needed to sustain efficient, unassisted hydrogen production.

Intensive research has been conducted in the past several decades to develop efficient photoelectrodes, catalysts, and device architectures for solar hydrogen generation.

The technology, described in a paper in the ACS journal Nano Letters, relies on a novel plasmonic photoelectrode architecture of light - activated gold nanoparticles that harvest sunlight to drive photocatalytic reactions by efficient, non-radiative plasmon... Read more →

This multilayered photoelectrode is... Read more →

For modeling of photoexcited electron dynamics in photoelectrodes, LLNL also maintains a simulation capability based on Time - dependent DFT Molecular Dynamics (TDDFT - MD) within the Ehrenfest formalism, as implemented by our team in the Qbox / qb @ll code.

A special microstructure on the photoelectrode surface literally gathers in sunlight and does not let it out again.

The photoelectrodes, left by themselves, are very vulnerable to oxidation (rust) and in a short while this ruins the solar - fuel generator's operation.

A team of researchers at Ulsan National Institute of Science and Technology (UNIST), Korea University, and the Korea Advanced Institute of Science and Technology (KAIST) has developed a new type of multilayered (Au NPs / TiO2 / Au) photoelectrode that could boost the ability of solar water - splitting to produce hydrogen.

Prof. Jeong Min Baik of UNIST (School of Materials Science and Engineering) said that while several attempts have been made to use UV - based photoelectrodes for hydrogen production, the new photoelectrode represents the first use of the metal - dielectric hybrid - structured film with TiO2 for oxygen production.