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Oxygen pressure-mediated cation stoichiometry, microstructure, and properties of epitaxial perovskite thin films
Published 2013“…However, cation off-stoichiometry at the epitaxial interfaces between manganites and other materials can lead to interfacial dead layers, severely reducing the performances of the tunnel junction devices. …”
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Thesis -
22
Measurement and control of oxygen non-stoichiometry in praseodymium-cerium oxide thin films by coulometric titration
Published 2023“…Abstract Oxygen non-stoichiometry profoundly impacts the electrical, magnetic, and catalytic properties of metal oxide. …”
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Reprogramming Factor Stoichiometry Influences the Epigenetic State and Biological Properties of Induced Pluripotent Stem Cells
Published 2015“…Our results demonstrate that the level and stoichiometry of reprogramming factors during the reprogramming process strongly influence the resulting pluripotency of iPS cells. …”
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Optical and electrical applications of ZnSxSe1−x nanowires-network with uniform and controllable stoichiometry
Published 2013“…Single crystalline ternary ZnSxSe1−x nanowires with uniform chemical stoichiometry and accurately controllable compositions (0≤ x ≤ 1) were synthesized through a simple and yet effective one-step approach with a specially designed modification. …”
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Role of surface stoichiometry on the interfacial electron behavior at Ni/TiO2(0 0 1) interfaces
Published 2013“…Regardless of the TiO2 surface stoichiometry, the Ni 2p3/2 BE's move monotonically toward lower value with the increase of Ni thickness due to the cluster size effect. …”
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Surface Chemistry and Non-Stoichiometry of Nd2NiO4+ Epitaxial Thin Films with Different Orientation and Strain
Published 2015“…The influence of lattice strain on non-stoichiometry and surface chemical composition was investigated for epitaxial Nd2NiO4+ä (NNO) films during annealing in ultra high vacuum (below 10[superscript -8] mbar) and temperatures of up to 700oC. (100)- and (001)-oriented films with tensile and compressive lattice strain along c-axis were fabricated using pulsed laser deposition method. …”
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Impact of Oxygen Non‐Stoichiometry on Near‐Ambient Temperature Ionic Mobility in Polaronic Mixed‐Ionic‐Electronic Conducting Thin Films
Published 2022“…Changes in film non-stoichiometry are monitored by tracking the optical absorption related to the oxidation state of Pr ions. …”
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Structural and Superconducting Property Variations with Nominal Mg Non-Stoichiometry in MgxB2 and Its Enhancement of Upper Critical Field
Published 2008“…By applying a combination of characterisation tools, changes in structural and superconducting properties with nominal Mg non-stoichiometry in MgxB2 are found. The non-stoichiometry produces enhanced in-field critical current densities (Jc’s) and upper critical field / irreversibility field (Hc2/Hirr(T)) values. …”
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Morphology and stoichiometry control of hierarchical CuInSe2/SnO2 nanostructures by directed electrochemical assembly for solar energy harvesting
Published 2013“…By changing the spatial electric field along the deposition region, we can control the morphology and stoichiometry of deposited product from In-poor-CuInSe2 nanoparticles to near stoichiometry CuInSe2 branched nanowires. …”
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Careful stoichiometry monitoring and doping control during the tunneling interface growth of an n + InAs(Si)/p + GaSb(Si) Esaki diode
Published 2020“…We use real time Reflection High Electron Diffraction analysis to monitor different interface stoichiometry at the tunneling interface. With Atomic Force Microscopy, X-ray diffraction and Transmission Electron Microscopy analyses, we demonstrate that an “InSb-like” interface leads to a sharp and defect-free interface exhibiting high quality InAs(Si) crystal growth contrary to the “GaAs-like” one. …”
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Controlling the magnetic properties of LaMnO3/SrTiO3 heterostructures by stoichiometry and electronic reconstruction : atomic-scale evidence
Published 2020“…It is found that the electronic reconstruction is confined within the first 3 ucs of LMO from the interface, and more importantly, it is robust against oxygen nonstoichiometry. When restoring stoichiometry, an enhanced ferromagnetic insulating state in LMO films with a thickness as thin as 2 nm (5 uc) is achieved, making LMO readily applicable as barriers in spin filters.…”
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35
Colloidal CuInSe 2 nanocrystals : from gradient stoichiometry toward homogeneous alloyed structure mediated by conducting polymer P3HT
Published 2013“…We report, for the first time, the synthesis of colloidal copper indium selenide (CuInSe2) nanocrystals (NCs) possessing a gradient stoichiometry that is potentially tunable by the presence of a conducting polymer, i.e., poly(3-hexyl thiophene) (P3HT) in the synthesis medium. …”
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Synthesis of copper indium diselenide poly-3-hexylthiophene heterojunction quantum dot
Published 2009“…EDX also reaffirmed the correct stoichiometry, however only for spot analysis and not for area analysis. …”
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Final Year Project (FYP) -
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Studies of Equilibria Involving the Binary and Ternary Complexes of Aluminium with Eriochrome Cyanine R (ECR) and Cetylpyridinium Chloride (CP)
Published 2005“…This paper is concerned with the study of stoichiometry of binary (aluminiumECR) and ternary (aluminium-ECR-CP) complexes of aluminium. …”
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Stoichiometric Effects of Feed Ratio on Syngas Production from CO2 Reforming of Methane over SmCoO3 Perovskite Catalyst
Published 2017“…The catalytic reaction was performed at atmospheric pressure on a reactor bed using a gas hourly space velocity of 30,000 h-1 and the activity was studied at stoichiometry (CO2: CH4 1:1), below (CO2: CH4 1:2) and above stoichiometry (CO2: CH4 2:1) of reactant gas at reaction temperature of 1023 K. …”
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Evolution pathway of CIGSe nanocrystals for solar cell applications
Published 2013“…The change in the stoichiometry of CuIn0.5Ga0.5Se2 during growth was estimated using Vegard’s law.…”
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Journal Article