Results 11 to 20 of about 18,738 (267)

Charge-Transfer Induced by the Oxygen Vacancy Defects in the Ag/MoO3 Composite System

open access: yesNanomaterials, 2021
In this paper, an Ag/MoO3 composite system was cosputtered by Ar plasma bombardment on a polystyrene (PS) colloidal microsphere array. The MoO3 formed by this method contained abundant oxygen vacancy defects, which provided a channel for charge transfer ...
Qi Chu   +7 more
doaj   +1 more source

Inhomogeneous Oxygen Vacancy Distribution in Semiconductor Gas Sensors: Formation, Migration and Determination on Gas Sensing Characteristics

open access: yesSensors, 2017
The density of oxygen vacancies in semiconductor gas sensors was often assumed to be identical throughout the grain in the numerical discussion of the gas-sensing mechanism of the devices.
Jianqiao Liu   +5 more
doaj   +1 more source

Oxygen Vacancy Introduction to Increase the Capacity and Voltage Retention in Li‐Excess Cathode Materials

open access: yesSmall Structures, 2023
Li‐rich rocksalt oxides are promising cathode materials for lithium‐ion batteries due to their large capacity and energy density, and their ability to use earth‐abundant elements.
Jianping Huang   +7 more
doaj   +1 more source

A study of vacancy defects related to gray tracks in KTiOPO4 (KTP) using positron annihilation

open access: yesAIP Advances, 2014
For the first time to our knowledge, positron annihilation spectroscopy (PAS) was used to study vacancy defects in KTiOPO4 (KTP) single crystals. Positron annihilation lifetime spectroscopy combined with dielectric measurements identified the existence ...
Yang Zhang   +5 more
doaj   +1 more source

SrTiO3 termination control: a method to tailor the oxygen exchange kinetics

open access: yesMaterials Research Letters, 2020
We provide insights into the influence of surface termination on the oxygen vacancy incorporation for the perovskite model material SrTiO $_3 $ during annealing in reducing gas environments.
Felix V. E. Hensling   +4 more
doaj   +1 more source

Exploring the Spatial Control of Topotactic Phase Transitions Using Vertically Oriented Epitaxial Interfaces

open access: yesNano-Micro Letters, 2021
Engineering oxygen vacancy formation and distribution is a powerful route for controlling the oxygen sublattice evolution that affects diverse functional behavior.
Wenrui Zhang   +8 more
doaj   +1 more source

Oxygen vacancy induced electronic structure variation in the La0.2Sr0.8MnO3 thin film

open access: yesAIP Advances, 2019
Oxygen vacancy in different oxide systems shows up as a crucial parameter in modulation of the emerging application-oriented functionalities. A systematic exploration on the relation between oxygen vacancy and electronic structure of the La0.2Sr0.8MnO3 ...
Jiali Zhao   +8 more
doaj   +1 more source

Hybrid functional study on the ferroelectricity of domain walls with O-vacancies in PbTiO3

open access: yesMechanical Engineering Journal, 2015
Nonlinear defect interactions between the 180° domain wall and oxygen-vacancies (O-vacancies) in PbTiO3, and the characteristic ferroelectricity due to the interactions are investigated using first-principles calculations based on the hybrid Hartree-Fock
Shogo TOMODA   +4 more
doaj   +1 more source

Revealing the mechanism of oxygen vacancy defect for CO2 adsorption and diffusion on CaO: DFT and experimental study

open access: yesJournal of CO2 Utilization
The calcium looping is a promising technology to achieve industrial CO2 capture, and the introduction of oxygen vacancy can promote the CO2 capture reactivity of CaO-based sorbents.
Xianyao Yan   +5 more
doaj   +1 more source

Effect of atmosphere and dopants on sintering of SnO2 [PDF]

open access: yesScience of Sintering, 2002
Tin oxide is an n type semiconductor material with a high covalent behavior. Mass transport in this oxide depends on the surface state promoted by atmosphere or by the solid solution of aliovalent oxide doping. The sintering and grain growth of this type
Varela J.A.   +4 more
doaj   +1 more source

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