Sami Salman Chiad

ORCID: 0000-0001-8589-352X
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Research Areas
  • Copper-based nanomaterials and applications
  • ZnO doping and properties
  • Chalcogenide Semiconductor Thin Films
  • Gas Sensing Nanomaterials and Sensors
  • Quantum Dots Synthesis And Properties
  • Transition Metal Oxide Nanomaterials
  • Galaxies: Formation, Evolution, Phenomena
  • Polymer Nanocomposite Synthesis and Irradiation
  • Advanced Semiconductor Detectors and Materials
  • Ga2O3 and related materials
  • Conducting polymers and applications
  • Astrophysical Phenomena and Observations
  • TiO2 Photocatalysis and Solar Cells
  • Iron oxide chemistry and applications
  • Astronomy and Astrophysical Research
  • Magnetic Properties and Synthesis of Ferrites
  • Electronic and Structural Properties of Oxides
  • Phase-change materials and chalcogenides
  • Semiconductor materials and devices
  • Semiconductor materials and interfaces
  • Infrared Target Detection Methodologies
  • Chemical and Physical Properties of Materials
  • Advanced Sensor and Energy Harvesting Materials
  • Surface Roughness and Optical Measurements
  • Semiconductor Lasers and Optical Devices

Mustansiriyah University
2015-2024

University of Babylon
2018-2021

University of Al-Qadisiyah
2020

Al-Muthanna University
2015

Nissan (United Kingdom)
2015

University of Baghdad
2011-2013

University of Anbar
2013

This study uses glass substrates to create nanostructured TiO2 thin films employing SolGel method. Afterwards, are annealed in air for two hours at (400, 450, and 500) °C. The XRD tests demonstrate that all tetragonal polycrystalline have orientations equal those described the literature. These findings suggest when annealing temperature rises, grain size increases. As is raised, Full Width Half Maximum (FWHM) reduces from 0.57° 0.0.51°, dislocation density drops 45.22 39.22.18 nm,...

10.15251/jor.2024.202.131 article EN Journal of Ovonic Research 2024-03-01

A thin film of iron disulfide (FeS2) and Mn-doped was prepared using the chemical spray pyrolysis (CSP) method at a constant temperature glass substrate around 400 °C. According to XRD examination, films were structurally cubic oriented with predominant planar orientation (201). The doping Mn ions in FeS2 host matrix confirmed by minor shift diffraction peak towards lower 2θ values. surface produced for pyrite homogeneous, according AFM investigations. data, predicted grain size altered as...

10.15251/cl.2023.201.63 article EN Chalcogenide Letters 2023-01-01

Sb2S3 thin films have been prepared by chemical bath deposition on a glas sub Absorbance and transmittance spectra were recorded in the wavelength range (30-900) nm. The effects of thickness absorption coefficient, reflectance, refractive index, extinction real imaginary parts dielectric constant estimated. It was found that reflectivity, coefficient , part all these parameters decrease as increased, while increase increased.

10.21123/bsj.2010.7.1.168-173 article EN cc-by Baghdad Science Journal 2024-03-04

TiO2 and TiO2:Cu films were deposited by spray pyrolysis (SP). X-ray diffraction reveals that have a polycrystalline structural. The AFM image of the surface roughness root mean square affected doping. Optical transmission was found to decrease from 94 % 84 with as doping percentage increase 3. bandgap (Eg) thin film 3.947eV. is shifted lower energies upon

10.15251/djnb.2023.184.1385 article EN cc-by Digest Journal of Nanomaterials and Biostructures 2023-12-04

Thermal evaporation technique has been used to produce silver oxide (AgO). The findings demonstrate that the crystal quality of AgO film was dominated by thin and sharp peaks at (111) plans. Atomic Force Microscopy (AFM) confirm distribution grains size appears nanostructure homogeneous in all films. RMS decreased from 6.84 nm 2.17 with thicknesses 200 nm. surface roughness 7.82 3.22 nanostructured films, a slight decrease average particle size. displayed increase thicknesses. spectrum...

10.15251/djnb.2023.183.1039 article EN cc-by Digest Journal of Nanomaterials and Biostructures 2023-09-20

CdS, and CdS: Al were grown onto glass bases via Chemical spray pyrolysis (CSP). XRD analysis of CdS films indicates a polycrystalline hexagonal structure with predominant orientation the (101) plane. The strain decreased from 28.55 to 25.66, grain size undoped was around (13.51–12.14) nm as content rose. According results AFM, CdS:2% Al, CdS:4% all exhibit smooth surfaces decreasing particle in range (78.46), (69.75), (42.20) nm, respectively. root-mean-square roughness values for 12.41...

10.15251/cl.2025.221.77 article EN Chalcogenide Letters 2025-01-25

Using chemical bath deposition (CBD) methods and various molarities, nanostructured CdS thin films were developed. XRD assured that these cubic polycrystalline, containing larger grains as the solution's concentration of cadmium ions increased. Dislocation density values dropped from 79.32 to 62.90 a result, nevertheless. Also, strain is lowered 30.88 27.50. AFM results demonstrate suffer decrease in value average particle size, root mean square, roughness with molarity concentration. SEM...

10.15251/cl.2025.221.43 article EN Chalcogenide Letters 2025-01-25

In this work, undoped CdO and Lithium doped (Li:CdO) with 2% 6% concentrations thin films were deposited using spray pyrolysis technique. Structural, morphological optical properties of the studied by x-ray diffraction (XRD), Scanning Electron Microscopy (SEM) UV–vis spectroscopy. The results density functional theory (DFT) showed that have cubic structure. exchange-correlation functions indicated generalized gradient approximation (GGA) DFT. Experimental transmittance was decreased from 79%...

10.1088/2053-1591/ab4af8 article EN Materials Research Express 2019-10-16

The effect of manganese doped cobalt oxide (Co 3 O 4 :Mn) was investigated by two different ratios (1% and 3%), which were precipitated spray pyrolysis technique (SPT), adopted using a laboratory designed glass atomizer.Glass substrates used to deposit films on them, heated at temperature 420 °C.The structural properties studied through X-ray diffraction.The results showed that all nanostructured polycrystalline there decrease in the preferred reflection intensity along (311) plane resulting...

10.5101/nbe.v12i3.p205-213 article EN cc-by Nano Biomedicine and Engineering 2020-07-13

Abstract Thin films of tin doped zinc oxide (ZnO: Sn) with thickness 300 ± 30 nm prepared by spray pyrolysis method at substrate temperatures 400°C. The structure, surface morphological and optical properties were studied, for Two weight ratios doping (2 4) wt %. results X-Ray measurements showed that all deposit samples have a polycrystalline pattern hexagonal wurtzite type structure. crystallites oriented along (002) plane. morphology obtained scanning electron microscope (SEM) there is...

10.1088/1742-6596/1234/1/012013 article EN Journal of Physics Conference Series 2019-07-01

The influence of two silver contents (2% and 4%) on NiO films were studied in terms structural optical properties. Ag doped grown glass n-type silicon substrates heated at 400C by chemical pyrolysis method. Optical transmission measurements showed up to 60% transparency the visible area for undoped decreased with increasing content. X-ray diffraction assures existence epitaxial growth c-axis. Average particle size, surface roughness energy gap also. Rectifying characteristics junctions...

10.15251/djnb.2020.154.1189 article EN cc-by Digest Journal of Nanomaterials and Biostructures 2020-12-01

Abstract Chemical Spray Pyrolysis (CSP) method is employed to deposit CdS and Silver (Ag)-doped films. The effect of Ag doping at 1, 3 wt-% levels considered. principal X-ray diffraction peak was along (020) plane. Maximum grain size observed the (CdS:3% Ag) dislocation density parameter increased from 53.04 37.08, whereas strain(%) decreases 25.23 21.10. Atomic force Microscope (AFM) images indicate a polycrystalline structure, reveal that undoped doped CdS:Ag films have discontinuous...

10.1088/1742-6596/1999/1/012063 article EN Journal of Physics Conference Series 2021-09-01

Undoped and Mn-doped zinc sulfide thin films were prepared on glass substrate by spray pyrolysis technique (SPT). XRD, AFM UV–visible spectra measurements done to explore the effect of doping structural optical properties ZnS films. X-ray diffraction illustrates polycrystalline nature increases via increasing Mn doping. Crystallite size evaluated Scherrer's formula shows with Average diameter for undoped is 84·78 nm it 96·93 3%Mn-doped ZnS. As concentration band gap decreases.

10.1063/5.0000158 article EN AIP conference proceedings 2020-01-01

In this study, were investigated structural, optical properties and morphological of Te Nano-thin films with different thicknesses by Chemical spray pyrolysis (CSP) method. The structural the studied as a dopant at 150-450 thicknesses. characterized XRD to study film structure. It was observed that hexagonal wurtzite structure ZnO for all samples. exhibited (102) preferential growth in Grain size values calculated from Scherrer’s formula, varied range (96-84) nm. band gap energy respectively...

10.15251/jor.2020.161.35 article EN Journal of Ovonic Research 2020-01-01

Abstract Nanostructured pure and Indium doped iron oxide thin films were deposited via spray pyrolysis technique (SPT). The effects of (2 % 4) concentration was studied. X-ray diffraction patterns disclosed that Fe 2 O 3 have a rhombohedral crystalline α-Fe O3 phase their crystallite size vary from (12.13 – 13.84) nm with content. strain(%) parameter decrease 28.57 to 25.04, AFM images show changes in morphology decreased surface roughness 2.75 1.7 4% doping, 3-D grain distribution are...

10.1088/1742-6596/1664/1/012016 article EN Journal of Physics Conference Series 2020-11-01

Zinc Sulphide thin films were grown by chemical spray pyrolysis. The influence of substrate temperature ST (250, 350 and 450°C) on structural optical characterization is investigated. XRD Patterns the synthesized film show preferred orientation (111) planes, confirming Cubic structure ZnS, Grain size for pure ZnS particle about (19.05-32.80) nm with temperature, whereas strain (%) parameter decrease from 18.17 to 10.56. Surface topogrphy studied atomic force microscope (AFM). grain observed...

10.1088/1742-6596/1664/1/012009 article EN Journal of Physics Conference Series 2020-11-01

Abstract In this study, were investigated structural, optical properties and morphological ofZnO Te-doped ZnO Nano-thin films deposited by Chemical spray pyrolysis(CSP) method. The structural of studied as pure Te dopant at concentration 2 4%. characterized XRD to study the structure films. It was observed that hexagonal wurtzite for all samples. exhibited (102) preferential growth in ratios. Grain size values calculated fromScherrer’s formula varied range (79-113) nm. band gap energy...

10.1088/1757-899x/870/1/012027 article EN IOP Conference Series Materials Science and Engineering 2020-06-01

Tin oxide was prepared by chemical methods and then doped with different weight ratios of vanadium 2wt% 4wt%.The structural, morphological, optical properties were studied.It found that all the recorded films had a polycrystalline diffraction pattern predominant reflection (111) plane.The doping processes resulted in improvement crystalline structure disappearance number secondary reflections direction film single pattern, thus reducing values energy gap percentage transmittance.The...

10.5101/nbe.v12i1.p67-74 article EN cc-by Nano Biomedicine and Engineering 2020-02-24

Using thermal evaporation, thin films of silver-doped CdSe were synthesized on glass bases. A hexagonal structure with a preference orientation along (100) plane according to the X-ray diffraction pattern. The surface topography was determined using Atomic Force Microscopy (AFM). AFM detects spherical nature nanoparticles and roughness rate film decreases root mean square (2 4) % doping in silver. As content increase, optical energy bandgap decrease from 1.85 eV 1.75 eV. Optical analysis...

10.15251/jor.2023.192.187 article EN Journal of Ovonic Research 2023-03-01

In these studies, radio frequency (RF) magnetron sputtering was used to produce nanostructured CuO thin films on glass bases with different thicknesses of (250, 300, and 350 nm). X-ray diffraction (XRD) analysis revealed a polycrystalline structure preferred peak along the (111) plane. The Scherrer formula compute grain size. It found that average sizes are 10.78 nm, 11.36 11.84 nm for film 250, 3000, 300 respectively, while dislocation density strain values decline. surface roughness...

10.15251/djnb.2024.192.717 article EN cc-by Digest Journal of Nanomaterials and Biostructures 2024-05-15

PVA doped FeCl3 have been deposited utilizing casting technique. Absorption spectrum was registered in the wavelengths (300-900 nm) UV-Visible spectrophotometer. Optical constants behavior such as, absorbance, absorption coefficient, and skin depth were studied. It found these parameters increased as Fe content increase. While extinction coefficient optical conductivity decreased. The energy gap of PVA-Fe films decreased from 4 eV for film to 3.5 PVA: % film.

10.1088/1742-6596/1003/1/012108 article EN Journal of Physics Conference Series 2018-05-01

Abstract The effect of the substrate temperature deposition copper oxide prepared by chemical spray pyrolysis technique was studied. XRD measurements show that all films are polycrystalline structure with predominant phase(-111). crystallite size increase increasing temperature. AFM images in 1-D and 2-D shows CuO nanostructure were shape curly sticks growing a vertical column at an average height 2.00 nm radius 40 - 50 nm. These nanostructures 3% sample gets higher up to 9.00 value optical...

10.1088/1742-6596/1294/2/022009 article EN Journal of Physics Conference Series 2019-09-01
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