P-8: High Resolution a-IGZO TFT LCD Panel Fabricated with Lower Annealing Temperature

2014 ◽  
Vol 45 (1) ◽  
pp. 972-974 ◽  
Author(s):  
Shin-Chuan Chiang ◽  
Yu-Hsien Chen ◽  
Ya-Ju LU ◽  
Der-Chun WU ◽  
Po-Lung Chen ◽  
...  
Keyword(s):  
High Resolution ◽  
Annealing Temperature ◽  
Lower Annealing Temperature ◽  
Igzo Tft

Photocatalytic Cr(VI) Reduction by Anodized TiO2

2008 ◽  
Vol 569 ◽  
pp. 221-224 ◽  
Author(s):  
Jae Kyung Yoon ◽  
Eun Jung Shim ◽  
Jin Wook Ha ◽  
Hyun Ku Joo
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Production ◽  
Zeta Potential ◽  
Environmental Remediation ◽  
Annealing Temperature ◽  
Experimental Conditions ◽  
Novel Technique ◽  
Reduction Efficiency ◽  
Lower Annealing Temperature ◽  
Acidic Conditions

In this study, immobilized nanotubular TiO2 is used to reduce toxic Cr(VI) to non toxic Cr(III) in aqueous solution under UV irradiation. To overcome the limitation of powder TiO2, a novel technique of immobilization based on anodization was applied and investigated under various experimental conditions. Among the samples tested under same anodizing condition, the nanotubular TiO2 annealed at 450 oC and 550 oC showed higher reduction efficiencies of Cr(VI). In addition, the surface characterizations (zeta potential, XRD and SEM) of these samples proved that the Cr(VI) reduction efficiency was higher under acidic conditions and at a lower annealing temperature. Through this study, it was concluded that anodized TiO2 has the potential to be useful technology for environmental remediation as well as hydrogen production in water.

SHI induced single-phase InSe formation at lower annealing temperature

2006 ◽  
Vol 244 (1) ◽  
pp. 190-193 ◽  
Author(s):  
R. Sreekumar ◽  
P.M. Ratheesh Kumar ◽  
C. Sudha Kartha ◽  
K.P. Vijayakumar ◽  
D. Kabiraj ◽  
...  
Keyword(s):  
Single Phase ◽  
Annealing Temperature ◽  
Lower Annealing Temperature

Neutron and X-ray diffraction study of ferrite nanocrystals obtained by microwave-assisted growth. A structural comparison with the thermal synthetic route

2014 ◽  
Vol 47 (1) ◽  
pp. 414-420 ◽  
Author(s):  
Eduardo Solano ◽  
Carlos Frontera ◽  
Teresa Puig ◽  
Xavier Obradors ◽  
Susagna Ricart ◽  
...  
Keyword(s):  
Crystal Size ◽  
Annealing Temperature ◽  
Structure And Properties ◽  
X Ray Diffraction ◽  
Structural Comparison ◽  
X Ray ◽  
Microwave Assisted ◽  
Cationic Distribution ◽  
Lower Annealing Temperature ◽  
Microstructure And Magnetic Properties

Neutron and X-ray powder diffraction have been used to investigate the differences between the crystal growth of ferrite magnetic nanoparticles (MFe2O4withM= Mn, Fe, Co, Ni, Zn) by two methodologies: microwave radiation and thermal decomposition routes. Rietveld refinement has been used to extract the cationic distribution, the microstructure and magnetic information. Results for the nanoparticles produced by the two procedures evidence similar cationic distribution, microstructure and magnetic properties: complete cationic disorder forM= Mn and Co, crystal size around/below 10 nmetc. It is thus proven that microwave-assisted growth is a promising eco-friendly synthetic technique for the generation of high-quality nanocrystals with comparable structure and properties to those produced by the thermal methodology, even though the microwave route needs a shorter time and lower annealing temperature to obtain the final crystal nanoparticles.

67.1:Distinguished Student Paper: 40 um-pitch IGZO TFT Gate Driver for High-resolution Rollable AMOLED

2013 ◽  
Vol 44 (1) ◽  
pp. 927-930 ◽  
Author(s):  
Di Geng ◽  
Byung Soon Kim ◽  
Mallory Mativenga ◽  
Man Ju Seok ◽  
Dong Han Kang ◽  
...  
Keyword(s):  
High Resolution ◽  
Student Paper ◽  
Gate Driver ◽  
Igzo Tft

EFFECT OF ANNEALING TEMPERATURE ON STRUCTURAL AND OPTICAL PARAMETERS OF SOL–GEL ROUTED MOLYBDENUM OXIDE THIN FILM

2015 ◽  
Vol 22 (04) ◽  
pp. 1550054 ◽  
Author(s):  
P. ADAL ARASU ◽  
R. VICTOR WILLIAMS
Keyword(s):  
Refractive Index ◽  
Annealing Temperature ◽  
Sol Gel ◽  
Orthorhombic Phase ◽  
Oxide Thin Film ◽  
Optical Parameters ◽  
X Ray Diffraction ◽  
Absorption Region ◽  
Lower Annealing Temperature ◽  
Transparent Region

The influence of annealing temperature on structural and optical properties of sol–gel routed spin-coated molybdenum tri oxide ( MoO 3) thin films are studied. The higher annealing temperatures improve the crystalline nature of the film. The X-ray diffraction (XRD) study reveals the formation of α-orthorhombic phase at higher annealing temperature and amorphous nature at lower annealing temperature. The optical bandgap of molybdenum tri oxide ( MoO 3) film is found to be 3.3–3.8 eV, and the refractive index of the film is found to be 2.2–2.9. The dispersion curve of the refractive index shows that an abnormal dispersion in the absorption region and normal dispersion in the transparent region are observed. The optical polarizability, optical conductivity, dielectric constant, volume and surface energy loss parameters are evaluated.

scholarly journals Low-Temperature Production of Genuinely Amorphous Carbon from Highly Reactive Nanoacetylide Precursors

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Ken Judai ◽  
Naoyuki Iguchi ◽  
Yoshikiyo Hatakeyama
Keyword(s):  
High Temperature ◽  
Amorphous Carbon ◽  
Annealing Temperature ◽  
Carbon Materials ◽  
Thermal Conductance ◽  
Chain Reactions ◽  
Copper Acetylide ◽  
Lower Annealing Temperature ◽  
Partial Crystallization ◽  
New Carbon Materials

Copper acetylide is a well-known explosive compound. However, when the size of it crystals is reduced to the nanoscale, its explosive nature is lost, owing to a much lower thermal conductance that inhibits explosive chain reactions. This less explosive character can be exploited for the production of new carbon materials. Generally, amorphous carbon is prepared by carbonization of organic compounds exposed to high temperature, which can induce partial crystallization in graphite. In this work, we present a new method in which the carbonization reaction can proceed at a lower annealing temperature (under 150°C) owing to the highly reactive nature of copper acetylide, thus avoiding crystallization processes and enabling the production of genuinely amorphous carbon materials.

L12- and L10-like cation-ordered structures in ZrO2–Y2O3 ceramics

2001 ◽  
Vol 16 (6) ◽  
pp. 1806-1813 ◽  
Author(s):  
J. C. Rao ◽  
Y. Zhou ◽  
D. X. Li
Keyword(s):  
Electron Microscopy ◽  
Computer Simulation ◽  
High Resolution ◽  
Annealing Temperature ◽  
High Resolution Electron Microscopy ◽  
Energy Dispersive ◽  
Ordered Structures ◽  
X Ray ◽  
Resolution Electron

Y0.25Zr0.75O2−x and Y0.5Zr0.5O2−y phases, with L12- and L10- like cation-ordered structures, respectively, have been found in ZrO2–Y2O3 ceramics in both the sintered and annealed states. High-resolution electron microscopy, energy-dispersive x-ray spectroscopy and computer simulation have been used to reveal the presence of the phases. The formation of Y0.25Zr0.75O2−x and Y0.5Zr0.5O2−y phases was initiated during the sintering procedure and developed with the increase in annealing temperature and time. Segregation of yttrium, which was prevalent in different regions even within one grain, induced the formation of Y0.25Zr0.75O2−x and Y0.5Zr0.5O2−y phases.

scholarly journals Influence of hard cold working on microstructure and properties of annealing copper tubes

2002 ◽  
Vol 38 (3-4) ◽  
pp. 163-170 ◽  
Author(s):  
S. Ivanov ◽  
Desimir Markovic
Keyword(s):  
Grain Size ◽  
Grain Growth ◽  
Mechanical Characteristics ◽  
Annealing Temperature ◽  
Cold Deformation ◽  
Deformation Degree ◽  
Chemical Content ◽  
Lower Annealing Temperature ◽  
Strength And Plasticity ◽  
Strength And Plasticity Characteristics

This work gives results of influence of temperature and deformation degree on changes in the metal grain growth of drawn copper tubes, because this mutual dependence was observed. Copper tubes samples, chemical content of 99,97 % Cu and 0,024 % P, were exposed to recrystallized annealing after drawing. The annealing was carried out at temperatures of 573, 623, 673, 723, 773, 823 and 873 K, for 60 minutes, in laboratory conditions. Investigation results show that after drawing with high cold deformation degree (96 - 99 %), the annealing leads to the changes in the continuous grain growth with increased temperature. The smaller grain size appears at 823 K in comparison with the lower annealing temperature. Annealing has influence on mechanical characteristics of tested samples and during drawing of copper tubes these characteristics are adequately changed: with regard to the annealing at the 773 K, the characteristics of strength and plasticity increase as a result of decreased grain size. The increase of annealing temperature to 873 K leads to the increased grain size and decreased values of strength and plasticity characteristics.

Annealing Temperature Dependence of Various Properties of ZnO Nanoparticles Investigated with Soft XAS

NANO ◽  
2021 ◽  
pp. 2150130
Author(s):  
Jyoti Sahu ◽  
P. A. Alvi ◽  
V. S. Vats ◽  
R. S. Meghwal ◽  
H. Sublania ◽  
...  
Keyword(s):  
Particle Size ◽  
High Resolution ◽  
Zno Nanoparticles ◽  
Annealing Temperature ◽  
Spherical Shape ◽  
Blue Shift ◽  
Spectroscopic Studies ◽  
Wurtzite Phase ◽  
X Ray ◽  
Text Mode

In this paper, structural, optical and electronic properties of ZnO nanoparticles were investigated with the variation in the annealing temperature. X-ray diffraction, High-Resolution Transmission Electron Spectroscopy, Absorption spectroscopy, Raman Spectroscopy and Soft X-ray spectroscopy techniques were invoked to investigate and gauge the effect of annealing temperature on these properties. Intact Hexagonal Wurtzite phase of the nanoparticles with increasing crystallinity and spherical shape with particle size between 20[Formula: see text]nm and 23[Formula: see text]nm [using both X-ray Diffractometer (XRD) and High-resolution Transmission of electron microscopy (HRTEM)], blue shift of absorption peak from 372[Formula: see text]nm to 366[Formula: see text]nm and Optical Band Gap from 3.24[Formula: see text]eV to 3.17[Formula: see text]eV (UV-Vis-NIR), narrowing of [Formula: see text] mode in Raman Spectra; all indicated enhanced crystallinity with increased annealing temperature. Effects produced by the sole variable such as annealing temperature on the indicative parameters in a definite order catapult the annealing conditions as a significant candidate for customized properties. To have a deeper insight at the electronic levels, Synchrotron-based X-ray absorption spectroscopic studies of ZnO nanoparticles were undertaken. The analysis of Soft XAS spectra showed the change in number of O 2[Formula: see text] and Zn 4[Formula: see text] unoccupied states with increasing particle size and crystallinity of ZnO nanoparticles for varying annealing temperature.

Synthesis and Characterization of Nanocrystalline Barium–Samarium Titanate

2016 ◽  
Vol 35 (5) ◽  
pp. 499-505 ◽  
Author(s):  
M. M. Hessien ◽  
Nader El-Bagoury ◽  
M. H. H. Mahmoud ◽  
Osama M. Hemeda
Keyword(s):  
Annealing Temperature ◽  
Crystalline Size ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Analysis Measurement ◽  
Lower Annealing Temperature ◽  
Precursor Route ◽  
Decomposition Behavior ◽  
Dominant Structure

AbstractBarium–samarium titanate nanopowder (Ba0.85 Sm0.1TiO3) was synthesized through tartrate precursor route. The effect of annealing temperature on the formation, crystalline size, morphology and magnetic properties was systematically studied. The annealing temperature was varied from 600°C to 1,100°C. Thermal analysis measurement (TG-DSC, thermogravimetry-differential scanning calorimetry) was carried out on the precursor to characterize the thermal decomposition behavior. The results showed that the precursor of Ba–Sm–Ti mixture decomposed thermally in multistep weight loss up to about 480°C and perovskite Ba0.85Sm0.1TiO3 started to form at ~520°C. X-ray diffraction and Fourier transform infrared (FTIR) spectroscopic measurements showed that the synthesized Ba0.85Sm0.1TiO3 has a tetragonal dominant structure with the presence of intermediate SmTi2O3 at lower annealing temperature. The ratio of SmTi2O3 was decreased and completely disappeared at higher annealing temperatures. The tetragonality, the theoretical density and the crystalline size were increased by increasing annealing temperature. The crystalline size is still in nano-range of 12.4–19.9 nm even after annealing at 1,100°C. The morphology of the produced sample transferred from nano-cubes to nano-whisker to nano-mace (nano-aggregates) with the increase of annealing temperature.

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