scholarly journals Synthesis and Characterization of Aluminum Doped Zinc Oxide Nanostructures via Hydrothermal Route

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
A. Alkahlout ◽  
N. Al Dahoudi ◽  
I. Grobelsek ◽  
M. Jilavi ◽  
P. W. de Oliveira
Keyword(s):  
Zinc Oxide ◽  
Blue Shift ◽  
Zinc Oxide Nanostructures ◽  
Hydrothermal Route ◽  
Molar Ratios ◽  
Oxide Nanostructures ◽  
Nitrate Precursor ◽  
Vis Spectroscopy ◽  
Aluminum Doped Zinc Oxide

Stable crystalline aluminum doped zinc oxide (AZO) nanopowders were synthesized using hydrothermal treatment processing. Three different aluminum precursors have been used. The Al-precursors were found to affect the morphology of the obtained nanopowders. AZO nanoparticles based on zinc acetate and aluminum nitrate have been prepared with different Al/Zn molar ratios. XRD investigations revealed that all the obtained powders have single phase zincite structure with purity of about 99%. The effect of aluminum doping ratio in AZO nanoparticles (based on Al-nitrate precursor) on structure, phase composition, and particle size has been investigated. The incorporation of Al in ZnO was confirmed by UV-Vis spectroscopy revealing a blue shift due to Burstein-Moss effect.

scholarly journals Synthesis and Characterization of Aluminum Doped Zinc Oxide Nanostructures by Nd:YAG Laser in Liquid

2020 ◽  
pp. 2590-2598
Author(s):  
Khawla S. Khashan ◽  
Ghassan M. Sulaiman ◽  
Sura A. Hussain
Keyword(s):  
Zinc Oxide ◽  
Visible Region ◽  
Laser Pulses ◽  
Deionized Water ◽  
Zinc Oxide Nanostructures ◽  
Zno Nps ◽  
Sem Images ◽  
Oxide Nanostructures ◽  
Aluminum Doped Zinc Oxide

Aluminum doped zinc oxide nanoparticles (AZO) with different doping concentrations were prepared by Nd-YAG laser ablation of target in deionized water. The characterization of these nanoparticles was performed using Fourier transform infrared (FTIR)  spectroscopy,  scanning electron microscopy (SEM) and photoluminance spectroscopy (PL).  FTIR spectra confirmed the formation  of vibrational bonds for ZnO NPs and AZO NPs. SEM images illustrated that the size and shape of the NPs changed with changing the number of laser pulses. Photoluminescence peaks exhibited two emission peaks, one at the UV region and the second in the visible region, which were modified as the number of laser pulses and doping concentration were changed.

Laser ablation synthesis and optical characterization of zinc oxide nanostructures

2007 ◽  
Author(s):  
Nikolai V. Tarasenko ◽  
Andrei V. Butsen ◽  
Alena A. Nevar ◽  
Alexander P. Stupak
Keyword(s):  
Zinc Oxide ◽  
Laser Ablation ◽  
Optical Characterization ◽  
Zinc Oxide Nanostructures ◽  
Oxide Nanostructures

Field-Emission Stability of Hydrothermally Synthesized Aluminum-Doped Zinc Oxide Nanostructures

2012 ◽  
Vol 12 (7) ◽  
pp. 5453-5458 ◽  
Author(s):  
Tsang-Yen Hsieh ◽  
Jyh-Liang Wang ◽  
Po-Yu Yang ◽  
Chuan-Chou Hwang ◽  
Der-Chi Shye
Keyword(s):  
Zinc Oxide ◽  
Field Emission ◽  
Zinc Oxide Nanostructures ◽  
Oxide Nanostructures ◽  
Emission Stability ◽  
Aluminum Doped Zinc Oxide

scholarly journals Synthesis and characterization of Ar-annealed zinc oxide nanostructures

AIP Advances ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 095225 ◽  
Author(s):  
Narayanan Kuthirummal ◽  
Gregory M. Smith ◽  
Leisha Lopez ◽  
Ramakrishna Podila ◽  
Jason Howell ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Synthesis And Characterization ◽  
Zinc Oxide Nanostructures ◽  
Oxide Nanostructures

Growth and Characterization of Zinc Oxide Nanostructures on (111) Silicon Substrates with Aluminum Compound Layer

2008 ◽  
Vol 53 (1) ◽  
pp. 292-298 ◽  
Author(s):  
Dong-Suk Kang ◽  
Seok Kyu Han ◽  
Sang Mo Yang ◽  
Jae Goo Kim ◽  
Wook Jung Hwang ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Compound Layer ◽  
Silicon Substrates ◽  
Zinc Oxide Nanostructures ◽  
Aluminum Compound ◽  
Oxide Nanostructures

Crystal Structural Studies of ZnO Nanorods and their Band Gaps

2014 ◽  
Vol 938 ◽  
pp. 71-75
Author(s):  
Muhd Firdaus Kasim ◽  
Norlida Kamarulzaman ◽  
Suraya Ahmad Kamil
Keyword(s):  
Electron Microscopy ◽  
Zinc Oxide ◽  
Zno Nanorods ◽  
Chelating Agent ◽  
Band Gaps ◽  
Zinc Oxide Nanostructures ◽  
X Ray Diffraction ◽  
Soft Chemistry ◽  
Oxide Nanostructures ◽  
Vis Spectroscopy

Zinc oxide nanostructures have been done by many scientists but amongst the soft chemistry methods, chelating agents are normally used. In this work zinc oxide nanostructures have been synthesized using a soft chemistry method without using a chelating agent. The precursor were annealed at various temperatures of 400 °C, 500 °C, 600 °C, 700 °C, 800 °C and 1200 °C for 24 h. Nanostructures are found with rod-like shapes and they are compared with larger oval morphology. X-Ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), and UV-Vis spectroscopy were used for characterization. XRD results confirm that all peaks were pure and single phase without the presence of any impurities. It was found from electron microscopy results that the morphology of the materials annealed at 400 °C possesses nanorod shape and as the calcination temperature increases, the material consists of mixed rod, spherical and oval shapes. The aspect ratio of the materials decreases when the annealing temperature increases. The absorption edges of the materials annealed at higher temperatures show a red-shift implying that narrowing of the band gaps occur in the materials. Band gap were evaluated and found to be between 3.32 to 3.19 eV.

Sign in / Sign up

Export Citation Format

Share Document