Results 241 to 250 of about 83,687 (300)

3D oxygen vacancy distribution and defect-property relations in an oxide heterostructure. [PDF]

Nat Commun
Hunnestad KA, Das H, Hatzoglou C, Holtz M, Brooks CM, van Helvoort ATJ, Muller DA, Schlom DG, Mundy JA, Meier D.   +9 more
europepmc   +1 more source

Oxygen-Vacancy-Driven Persistent Luminescence in Mn²⁺-Doped MgGeO₃: Insights from X-Ray Absorption Fine Structure Spectroscopy. [PDF]

Chemphyschem
Cao S, Liu Y, Deng R, Lee C, Liu L.
europepmc   +1 more source

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Oxygen vacancies in lithium tantalate

Physical Review B, 1985
Lithium tantalate crystals turn ``black'' when annealed above approximately 850 \ifmmode^\circ\else\textdegree\fi{}C in an argon atmosphere. The resulting optical absorption spectrum has a distinct peak at 460 nm but also extends through the entire visible and near ultraviolet.
, Kappers, , Sweeney, , Halliburton, , Liaw   +3 more
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Oxygen vacancies in ZnO

Applied Physics Letters, 2005
The electronic properties of ZnO have traditionally been explained by invoking intrinsic defects. In particular, the frequently observed unintentional n-type conductivity has often been attributed to oxygen vacancies. We report first-principles calculations showing that the oxygen vacancy VO is not a shallow donor, but has a deep e(2+∕0) level at ∼1 ...
Anderson Janotti, Chris G. Van de Walle
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Oxygen vacancies in SrTiO3

2008 17th IEEE International Symposium on the Applications of Ferroelectrics, 2008
Oxygen vacancy clustering in SrTiO3-? thin films has been investigated by electrical transport and photoemission spectroscopy. We deposited SrTiO3-? thin films on LaAlO3(001) substrate at reducing oxygen ambients. The carrier density did not increase with decreasing the ambient oxygen pressure.
null Euiyoung Choi, null Joho Kim, Doduc Cuong, null Jaichan Lee   +3 more
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Oxygen vacancies in ZnO

Physica B: Condensed Matter, 2003
Abstract We present our investigations on the absorption and emission properties of the neutral oxygen vacancy in ZnO. Temperature-dependent photoluminescence (PL) experiments allow to determine the zero-phonon-energy of the emission and its phonon-coupling parameters.
F. Leiter, H. Alves, D. Pfisterer, N.G. Romanov, D.M. Hofmann, B.K. Meyer   +5 more
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Radiation Effects and Oxygen Vacancies in Silicates

Science, 1970
Proton and electron irradiation of silicates, minerals, and rocks produces a paramagnetic defect whose resonance spectrum is identical to that of the singly charged oxygen vacancy in silica glass and α-quartz. It is suggested that this defect is characteristic of all structures containing SiO 4 tetrahedra.
A, Chatelain, J L, Kolopus, R A, Weeks
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Oxygen Vacancy Engineering in Photocatalysis

Solar RRL, 2020
Photocatalysis, which converts natural solar energy into chemical energy, has emerged as one of the most appealing technologies in the past decades. However, photocatalytic performances are limited by the poor absorption of visible light, charge‐carrier recombination during migration, and a high energy barrier for activating reactants. Oxygen vacancies
Yanmei Huang, Yu Yu, Yifu Yu, Bin Zhang
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Interaction of oxygen vacancies in yttrium germanates

Physical Chemistry Chemical Physics, 2012
Forming a good Ge/dielectric interface is important to improve the electron mobility of a Ge metal oxide semiconductor field-effect transistor. A thin yttrium germanate capping layer can improve the properties of the Ge/GeO(2) system. We employ electronic structure calculations to investigate the effect of oxygen vacancies in yttrium-doped GeO(2) and ...
Wang, Hao, Chroneos, Alexander I., Dimoulas, Athanasios Dimoulas, Schwingenschlögl, Udo   +3 more
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