Results 11 to 20 of about 1,197,791 (266)

Facet-dependent stability of near-surface oxygen vacancies and excess charge localization at CeO2surfaces [PDF]

open access: yes, 2021
To study the dependence of the relative stability of surface (V A) and subsurface (VB) oxygen vacancies with the crystal facet of CeO2, the reduced (100), (110) and (111) surfaces, with two different concentrations of vacancies, were investigated by ...
Lustemberg, Pablo German   +5 more
core   +3 more sources

Argon and Oxygen Gas Flow Rate Dependency of Sputtering-Based Indium-Gallium-Zinc Oxide Thin-Film Transistors

open access: yesMicromachines, 2023
Oxygen vacancies are a major factor that controls the electrical characteristics of the amorphous indium-gallium-zinc oxide transistor (a-IGZO TFT). Oxygen vacancies are affected by the composition ratio of the a-IGZO target and the injected oxygen flow ...
Youngmin Han   +4 more
doaj   +1 more source

Thermally induced oxygen vacancies in BiOCl nanosheets and their impact on photoelectrochemical performance [PDF]

open access: yes, 2022
Oxygen vacancies (OVs) have been reported to significantly alter the photocatalytic properties of BiOCl nanosheets. However, their formation mechanism and their role in the enhancement of photoelectrochemical performance remain unclear.
Jan Philipp, Hofmann   +7 more
core   +2 more sources

Oxygen vacancies in perovskite oxide piezoelectrics [PDF]

open access: yes, 2020
The excellent electro-mechanical properties of perovskite oxide ferroelectrics make these materials major piezoelectrics. Oxygen vacancies are believed to easily form, migrate, and strongly affect ferroelectric behavior and, consequently, the ...
Tyunina, Marina   +2 more
core   +1 more source

Localized versus itinerant states created by multiple oxygen vacancies in SrTiO3

open access: yesNew Journal of Physics, 2015
Oxygen vacancies in strontium titanate surfaces (SrTiO _3 ) have been linked to the presence of a two-dimensional electron gas with unique behavior. We perform a detailed density functional theory study of the lattice and electronic structure of SrTiO _3
Harald O Jeschke   +2 more
doaj   +1 more source

Two Dimensional Oxygen-deficient Bismuth oxy-iodide Nanosheets with Enhanced Supercapacitor Performances

open access: yesInternational Journal of Electrochemical Science, 2020
Introducing oxygen vacancy into oxides has become an effective strategy for enhancing the electrochemical performance. Herein, a series of identical two-dimensional BiOI nanosheets with various concentration of oxygen vacancies are rationally fabricated ...
Huichao Wang   +7 more
doaj   +1 more source

Role of Sr doping and external strain on relieving bottleneck of oxygen diffusion in La2−x Sr x CuO4−δ

open access: yesScientific Reports, 2022
In many complex oxides, the oxygen vacancy formation is a promising route to modify the material properties such as a superconductivity and an oxygen diffusivity.
Sohee Park   +3 more
doaj   +1 more source

Highly ordered Nb2O5 nanochannel film with rich oxygen vacancies for electrocatalytic N2 reduction: Inactivation and regeneration of electrode

open access: yes, 2021
We report the fabrication of highly ordered Nb2O5 nanochannel film (Nb2O5-NCF) onto niobium foil by an anodization method. After thermal treatment, the obtained Nb2O5-NCF with rich oxygen vacancies exhibits electrochemical N2 reduction reaction (NRR ...
Wang, G   +4 more
core   +1 more source

Anisotropic chemical expansion due to oxygen vacancies in perovskite films

open access: yesScientific Reports, 2021
In scientifically intriguing and technologically important multifunctional ABO3 perovskite oxides, oxygen vacancies are most common defects. They cause lattice expansion and can alter the key functional properties.
M. Tyunina   +3 more
doaj   +1 more source

Impact of dielectric properties on ionic conductivity of Ce0.9Sm0.1O1.95 via defect interaction

open access: yesMaterials Letters: X, 2021
This study mainly investigates the defect interaction mediated ionic conductivity of Ce0.9Sm0.1O1.95. The ionic conductivity mainly depends on the concentration of free oxygen vacancies.
Sk. Anirban, Abhigyan Dutta
doaj   +1 more source

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