Results 31 to 40 of about 48,017 (305)

Band-gap engineering of BiOCl with oxygen vacancies for efficient photooxidation properties under visible-light irradiation

open access: yes, 2018
Engineering the electronic structure of BiOCl through the creation of oxygen vacancies can be a good strategy to enhance the photooxidation activity of BiOCl.
Yu, Youxing   +15 more
core   +2 more sources

Effects of oxygen vacancies on polarization stability of barium titanate

open access: yes, 2016
Oxygen vacancy, a kind of native point defects in ferroelectric ceramics, usually causes an increase of the dielectric loss. Based on experimental observations, it is believed that all of the oxygen vacancies are an unfavorable factor for energy saving ...
Shen, Y.   +12 more
core   +1 more source

Coupling and competition between ferroelectricity, magnetism, strain, and oxygen vacancies in AMnO₃ perovskites [PDF]

open access: yes, 2016
We use first-principles calculations based on density functional theory to investigate the interplay between oxygen vacancies, A-site cation size/tolerance factor, epitaxial strain, ferroelectricity, and magnetism in the perovskite manganite series ...
Spaldin, Nicola A.   +7 more
core   +1 more source

Enriched surface oxygen vacancies of BiOCl boosting efficient charge separation, whole visible-light absorption, and photo to thermal conversion

open access: yes, 2022
A simple and controllable solvothermal method was used to synthesis a series of BiOCl nanosheets with various surface oxygen vacancies (OVs) concentration.
Ding, Hao   +6 more
core   +1 more source

Magnetic behavior in LiNbO3 nanocrystallites caused by oxygen vacancies

open access: yes, 2014
Ferromagnetism is observed in LiNiO3 nanocrystals exposed to a reducing atmosphere intended to create oxygen vacancies. The existence of vacancies is confirmed by measuring the oxygen depletion across the selected nanoparticles by TEM.
ABEL HURTADO MACIAS   +3 more
core   +1 more source

Vacancies and vacancy-oxygen complexes in silicon: Positron annihilation with core electrons [PDF]

open access: yesPhysical Review B, 1998
Various point defects in silicon are studied theoretically from the point view of positron annihilation spectroscopy. Properties of a positron trapped at a single vacancy, divacancy, vacancy-oxygen complexes $({\mathrm{VO}}_{n}),$ and divacancy-oxygen complex are investigated. In addition to the positron lifetime and positron binding energy to defects,
Kuriplach, Jan   +4 more
openaire   +3 more sources

Ultrathin iron-cobalt oxide nanosheets with abundant oxygen vacancies for the oxygen evolution reaction

open access: yes, 2017
Electrochemical water splitting is a promising method for storing light/electrical energy in the form of H fuel; however, it is limited by the sluggish anodic oxygen evolution reaction (OER).
Lei Ge   +13 more
core   +1 more source

Determining the Role of Oxygen Vacancies in the Photocatalytic Performance of WO3 for Water Oxidation

open access: yes, 2019
Oxygen vacancies are common to most metal oxides, whether intentionally incorporated or otherwise, and the study of these defects is of increasing interest for solar water splitting.
James R, Durrant   +3 more
core   +1 more source

In situ formation of oxygen vacancies achieving near-complete charge separation in planar BiVO4 photoanodes

open access: yes, 2020
Despite a suitable bandgap of bismuth vanadate (BiVO) for visible light absorption, most of the photogenerated holes in BiVO photoanodes are vanished before reaching the surfaces for oxygen evolution reaction due to the poor charge separation efficiency ...
Ostrikov, Kostya   +14 more
core   +1 more source

Oxygen-vacancy-related relaxation and conduction behavior in (Pb1-xBax)(Zr0.95Ti0.05)O3 ceramics

open access: yesAIP Advances, 2014
(Pb1-xBax)(Zr0.95Ti0.05)O3 (x = 0, 0.025, 0.05, 0.075 and 0.1) ceramics were prepared via a solid-state reaction route. Low-frequency (20 ∼ 2 × 107 Hz) dielectric properties were investigated in the temperature region of 25-650 °C.
Tian-Fu Zhang   +6 more
doaj   +1 more source

Home - About - Disclaimer - Privacy