scholarly journals STRUCTURAL CHARACTERIZATION OF Co-DOPED ZnO NANOPARTICLES USING X-RAY DIFFRACTION AND RAMAN SPECTROSCOPY

2015 ◽  
Author(s):  
T. J. Castro ◽  
S. W. da Silva ◽  
F. Nakagomi ◽  
A. Franco Júnior ◽  
H. V. S. Pessoni ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Structural Characterization ◽  
Zno Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Doped Zno ◽  
Co Doped

scholarly journals Effect of Ag Doping on Properties of Al–Doped ZnO Nanoparticles Varies as Zn1-X-YAgxALYO

2017 ◽  
Vol 14 (2) ◽  
pp. 146-152
Author(s):  
Neha Sharma ◽  
Sanjayay Kumar
Keyword(s):  
Zno Nanoparticles ◽  
Spherical Shape ◽  
Xrd Analysis ◽  
Crystalline Size ◽  
X Ray Diffraction ◽  
X Ray ◽  
In Doping ◽  
Vis Spectroscopy ◽  
Doped Zno

In present study, undoped ZnO, Zn0.8Ag0.2O, Zn0.8Al0.2O and Zn0.6Al0.2Ag0.2O samples are synthesized by simple solution method. X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Energy-Dispersive X-ray spectroscopy (EDX) and UV-visible (UV-Vis) spectroscopy are used to perform the characterization of undoped, doped and codoped samples. XRD analysis is exposed that hexagonal wurtzite crystalline structure obtained for undoped, doped and codoped samples without any extra representation of impurity phases. The crystalline size is when evaluated by using Scherrer, It has 44, 49, 41and 37nm for undoped ZnO, Zn0.8Ag0.2O, Zn0.8Al0.2O and Zn0.6Al0.2Ag0.2O samples. Similarly, the crystalline size and strain are also evaluated by Williamson hall (W-H) and size strain plot (SSP) for the undoped, doped and codoped nanoparticles. The evaluated crystalline size by SSP is three times greater than the result of the scherrer method. The SEM exposes that surface morphology of nanoparticle samples, in this case is the formation of large agglomeration in spherical shape with nanocrystallites of undoped and doped ZnO with apparent and definite boundaries. EDX points out the replacement of Al2+ and Ag+ with Zn2+ in ZnO matrix and consequences in the development of single-phase Zn1−x−yAgxAlyO. The blueshift is shown in UV-Vis absorption spectra because the band gap value increases with the increase in doping, except Ag+ doped ZnO nanoparticles.

scholarly journals Structural and optical characteristic of 1-(4-Methylsulfonyl Phenyl)-3-(4-n, n Dimethyl (amino Phenyl)-2-Propen- 1-One (MSPPP) Chalcone doped ZnO nanoparticles

NanoNEXT ◽  
2021 ◽  
pp. 28-34
Author(s):  
Mohana F. Attia ◽  
Abdelrahman A. Elbadawi
Keyword(s):  
Zno Nanoparticles ◽  
Diffuse Reflection ◽  
Energy Gap ◽  
Hexagonal Wurtzite Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Crystallite Sizes ◽  
Order Of Magnitude ◽  
Doped Zno

The purpose of this paper is to investigate the structural and optical characteristics of 1-(4-Methylsulfonyl Phenyl)-3-(4-n, n Dimethyl (amino Phenyl)-2-Propen- 1-One (MSPPP) Chalcone doped in ZnO nanoparticles. Part of the aim is to study the characterization of chalcone doped ZnO nanoparticles by several techniques such as X-ray diffraction, Scanning electron microscope, FTIR spectroscopy, and diffuse reflection spectra.  All doped samples showed a hexagonal wurtzite structure. This study has shown that the crystallite size of pure ZnO varied from 23.50 to 27.45 nm and when increasing the chalcone percentage by 0.5 and 1.5%, has increased the crystallite sizes in the range of 33.40–33.80 nm and 33.80–36.20 nm, respectively. The value of the energy gap (Eg) for ZnO nanoparticles was 3.14 eV. For 0.5 and 1.5% chalcone doped ZnO, the energy gap decreased by an order of magnitude 0.16 eV.

Preparation and Characterization of Cobalt Doped ZnO and TiO2

2002 ◽  
Vol 722 ◽  
Author(s):  
Shaoguang Yang ◽  
Silas T. Hung ◽  
Herman H.Y. Sung ◽  
A.B. Pakhomov ◽  
C.Y. Wong
Keyword(s):  
Diluted Magnetic Semiconductor ◽  
Magnetic Semiconductor ◽  
Zno Films ◽  
X Ray Diffraction ◽  
Sputtering Deposition ◽  
X Ray ◽  
Doped Zno ◽  
Diluted Magnetic ◽  
Co Doped

AbstractSynthesis and characterization of transparent Co-doped ZnO and TiO2 diluted magnetic semiconductor (DMS) films are described. The films are prepared by single sputtering deposition. They are ferromagnetic at temperatures as high as 350 K. The films were characterized by X-ray diffraction (XRD), X-ray photoemission spectroscopy (XPS), X-ray fluorescence (XRF). Optical transparency was measured on UV/VIS spectrometer. The Codoped ZnO films had wurtzite structure similar to ZnO with the (002) preferential texture. Neither XRD nor XPS showed any presence of pure Co or CoO in the samples. The Co-doped TiO2 samples were amorphous, and some unoxidized Co was found in the films.

Structural Characterization of InAs/(GaIn)Sb Superlattices for IR Optoelectronics

1996 ◽  
Vol 421 ◽  
Author(s):  
J. Wagner ◽  
J. Schmitz ◽  
F. Fuchs ◽  
U. Weimar ◽  
N. Herres ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
High Resolution ◽  
Molecular Beam Epitaxy ◽  
Structural Characterization ◽  
Molecular Beam ◽  
Alloy Composition ◽  
Structural Quality ◽  
X Ray Diffraction ◽  
X Ray

AbstractWe report on the structural characterization of InAs/(GaIn)Sb superlattices (SL) grown by solid-source molecular-beam epitaxy. SL periodicity and overall structural quality were assessed by high-resolution X-ray diffraction and Raman spectroscopy. Spectroscopic ellipsometry was found to be sensitive to the (GaIn)Sb alloy composition.

Structural characterization of MBE-grown HgSe:Fe layers: X-ray diffraction and Raman spectroscopy

2000 ◽  
Vol 214-215 ◽  
pp. 269-274 ◽  
Author(s):  
W. Szuszkiewicz ◽  
J. Bąk-Misiuk ◽  
E. Dynowska ◽  
M. Jouanne ◽  
J.F. Morhange ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Structural Characterization ◽  
X Ray Diffraction ◽  
X Ray
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