Analysis of charge-injection characteristics at electrode-organic interfaces: Case study of transition-metal oxides

2009 ◽  
Vol 80 (23) ◽  
Author(s):  
Z. B. Wang ◽  
M. G. Helander ◽  
M. T. Greiner ◽  
J. Qiu ◽  
Z. H. Lu
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Charge Injection ◽  
Organic Interfaces

P-type doping of organic wide band gap materials by transition metal oxides: A case-study on Molybdenum trioxide

2009 ◽  
Vol 10 (5) ◽  
pp. 932-938 ◽  
Author(s):  
Michael Kröger ◽  
Sami Hamwi ◽  
Jens Meyer ◽  
Thomas Riedl ◽  
Wolfgang Kowalsky ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Band Gap ◽  
Transition Metal Oxides ◽  
Molybdenum Trioxide ◽  
Wide Band ◽  
Wide Band Gap ◽  
P Type

scholarly journals Magnetic oxygen in transition metal oxides: A case study of Ba2CoO4

2021 ◽  
Vol 150 ◽  
pp. 109803
Author(s):  
Yubo Zhang ◽  
Jinliang Ning ◽  
Lin Hou ◽  
Jamin Kidd ◽  
Melissa Foley ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides

Ion-Exchange Mechanism of Layered Transition-Metal Oxides: Case Study of LiNi0.5Mn0.5O2

2014 ◽  
Vol 53 (15) ◽  
pp. 8083-8087 ◽  
Author(s):  
Hyeokjo Gwon ◽  
Sung-Wook Kim ◽  
Young-Uk Park ◽  
Jihyun Hong ◽  
Gerbrand Ceder ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Exchange Mechanism ◽  
Layered Transition Metal

scholarly journals Correction to Ion-Exchange Mechanism of Layered Transition-Metal Oxides: Case Study of LiNi0.5Mn0.5O2

2015 ◽  
Vol 54 (4) ◽  
pp. 2081-2081 ◽  
Author(s):  
Hyeokjo Gwon ◽  
Sung-Wook Kim ◽  
Young-Uk Park ◽  
Jihyun Hong ◽  
Gerbrand Ceder ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Exchange Mechanism ◽  
Layered Transition Metal

HREM Study of electron-induced surface radiation damage in ReO3

1991 ◽  
Vol 49 ◽  
pp. 636-637
Author(s):  
R. Ai ◽  
H.-J. Fan ◽  
L. D. Marks
Keyword(s):  
Transition Metal ◽  
Metal Ions ◽  
Metal Oxides ◽  
Electron Irradiation ◽  
Transition Metal Oxides ◽  
Carbon Film ◽  
Transition Metal Ions ◽  
Surface Radiation ◽  
Valence Transition ◽  
Electron Microscopes

It has been known for a long time that electron irradiation induces damage in maximal valence transition metal oxides such as TiO2, V2O5, and WO3, of which transition metal ions have an empty d-shell. This type of damage is excited by electronic transition and can be explained by the Knoteck-Feibelman mechanism (K-F mechanism). Although the K-F mechanism predicts that no damage should occur in transition metal oxides of which the transition metal ions have a partially filled d-shell, namely submaximal valence transition metal oxides, our recent study on ReO3 shows that submaximal valence transition metal oxides undergo damage during electron irradiation.ReO3 has a nearly cubic structure and contains a single unit in its cell: a = 3.73 Å, and α = 89°34'. TEM specimens were prepared by depositing dry powders onto a holey carbon film supported on a copper grid. Specimens were examined in Hitachi H-9000 and UHV H-9000 electron microscopes both operated at 300 keV accelerating voltage. The electron beam flux was maintained at about 10 A/cm2 during the observation.

Problems with oxygen analysis in the system MgO-Al2O3-SiO2 with the electron microprobe

1992 ◽  
Vol 50 (2) ◽  
pp. 1624-1625
Author(s):  
Michel Fialin ◽  
Guy Rémond
Keyword(s):  
Transition Metal ◽  
Metal Oxides ◽  
Transition Metal Oxides ◽  
Electrostatic Charge ◽  
Carbon Layer ◽  
Sample Holder ◽  
Rock Matrix ◽  
Electrical Discharges ◽  
Thin Carbon ◽  
Beam Instabilities

Oxygen-bearing minerals are generally strong insulators (e.g. silicates), or if not (e.g. transition metal oxides), they are included within a rock matrix which electrically isolates them from the sample holder contacts. In this respect, a thin carbon layer (150 Å in our laboratory) is evaporated on the sections in order to restore the conductivity. For silicates, overestimated oxygen concentrations are usually noted when transition metal oxides are used as standards. These trends corroborate the results of Bastin and Heijligers on MgO, Al2O3 and SiO2. According to our experiments, these errors are independent of the accelerating voltage used (fig.l).Owing to the low density of preexisting defects within the Al2O3 single-crystal, no significant charge buildup occurs under irradiation at low accelerating voltage (< 10keV). As a consequence, neither beam instabilities, due to electrical discharges within the excited volume, nor losses of energy for beam electrons before striking the sample, due to the presence of the electrostatic charge-induced potential, are noted : measurements from both coated and uncoated samples give comparable results which demonstrates that the carbon coating is not the cause of the observed errors.

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