ChemInform Abstract: THE ZINC-POTASSIUM HYDROXIDE SYSTEM: THE SOLUTION-PRECIPITATION PATH FOR ANODIC ZINC OXIDE FORMATION

ABSTRACTZinc oxide (ZnO) single crystals were grown by the hydrothermal method using lithium and potassium hydroxide as mineralizer and properties of the grown crystals were characterized from the viewpoints of epitaxial wafer applications. The growth sector dependence of impurity and defect concentrations were characterized by secondary ion mass spectroscopy and photoluminescence. As a result, it was clearly shown that defect and impurity distribution in the obtained crystal was anisotropic, and this anisotropy is affected by the choice of the seed crystal shape and growth direction. Annealing effect on flatness of the wafer surface was also examined, and it was found that high temperature annealing with flat single crystalline cover is appropriate for removal of scratch and formation of atomically flat surface. Moreover, we show the possible miss-evaluation of Hall coefficient of ZnO due to anisotropy in defects and impurities distributions.

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Pathway of zinc oxide formation by seed-assisted and controlled double-jet precipitation

CrystEngComm ◽

10.1039/c5ce01916h ◽

2016 ◽

Vol 18 (6) ◽

pp. 924-929 ◽

Cited By ~ 9

Author(s):

Xu Yan ◽

Liyuan Chai ◽

Qingzhu Li ◽

Lijun Ye ◽

Bentao Yang ◽

...

Keyword(s):

Zinc Oxide ◽

Room Temperature ◽

Oxide Formation ◽

Short Time

ZnO can be well formed in a short time at room temperature via seed-assisted and controlled double-jet precipitation.

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Vibrational Spectra of Solutions of Zinc Oxide in Potassium Hydroxide

The Journal of Chemical Physics ◽

10.1063/1.1696856 ◽

1965 ◽

Vol 43 (3) ◽

pp. 843-846 ◽

Cited By ~ 32

Author(s):

J. Stuart Fordyce ◽

Ruth L. Baum

Keyword(s):

Zinc Oxide ◽

Vibrational Spectra ◽

Potassium Hydroxide

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Kinetics of zinc oxide formation from zinc sulfide by reaction with lime in the presence of water vapor

Metallurgical Transactions B ◽

10.1007/bf02672890 ◽

1987 ◽

Vol 18 (4) ◽

pp. 727-732 ◽

Cited By ~ 10

Author(s):

H. Y. Sohn ◽

Daesoo Kim

Keyword(s):

Zinc Oxide ◽

Water Vapor ◽

Zinc Sulfide ◽

Oxide Formation ◽

Kinetics Of

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The study of thermal decomposition kinetics of zinc oxide formation from zinc oxalate dihydrate

Journal of Thermal Analysis and Calorimetry ◽

10.1007/s10973-013-3438-z ◽

2013 ◽

Vol 115 (2) ◽

pp. 1119-1125 ◽

Cited By ~ 20

Author(s):

Chengcheng Hu ◽

Jie Mi ◽

Suli Shang ◽

Ju Shangguan

Keyword(s):

Thermal Decomposition ◽

Zinc Oxide ◽

Decomposition Kinetics ◽

Thermal Decomposition Kinetics ◽

Oxide Formation ◽

Oxalate Dihydrate ◽

Zinc Oxalate ◽

Kinetics Of

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Extraction and identification of fillers and pigments from pyrolyzed rubber and tire samples

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100163332 ◽

1996 ◽

Vol 54 ◽

pp. 174-175

Author(s):

P. Sadhukhan ◽

J. B. Zimmerman

Keyword(s):

Zinc Oxide ◽

Electron Microscope ◽

Carbon Black ◽

Natural Rubber ◽

Transmission Electron Microscope ◽

Rolling Resistance ◽

Synthetic Polymers ◽

Nitrogen Atmosphere ◽

Transmission Electron ◽

Curing Agents

Rubber stocks, specially tires, are composed of natural rubber and synthetic polymers and also of several compounding ingredients, such as carbon black, silica, zinc oxide etc. These are generally mixed and vulcanized with additional curing agents, mainly organic in nature, to achieve certain “designing properties” including wear, traction, rolling resistance and handling of tires. Considerable importance is, therefore, attached both by the manufacturers and their competitors to be able to extract, identify and characterize various types of fillers and pigments. Several analytical procedures have been in use to extract, preferentially, these fillers and pigments and subsequently identify and characterize them under a transmission electron microscope.Rubber stocks and tire sections are subjected to heat under nitrogen atmosphere to 550°C for one hour and then cooled under nitrogen to remove polymers, leaving behind carbon black, silica and zinc oxide and 650°C to eliminate carbon blacks, leaving only silica and zinc oxide.

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