Sensitivity of Nanostructured Mn-Doped Cobalt Oxide Films for Gas Sensor Application

Hassan, Ehssan S.; Qader, Kameran Yasseen; Hadi, Esraa H.; Chiad, Sami Salman; Habubi, Nadir F.; Abass, Khalid Haneen

doi:10.5101/nbe.v12i3.p205-213

Cited by 23 publications

(3 citation statements)

References 37 publications

(37 reference statements)

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“…The inclusion of Mg in the ZnS texture regards the purpose of the development of additional collection centers due to low emission energy (shrinkage effect) [43,44]. Equation ( 6) was used to calculate refractive index (n) [45,46]:…”

Section: Optical Propertiesmentioning

confidence: 99%

Preparation and analysis of Ag2Se1-xTex thin film structure on the physical properties at various temperatures by thermal evaporation

Ali¹,

Khudayer²

2023

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Chemical spray pyrolysis (CSP) was utilized to create pure Zinc Sulfide (ZnS) and magnesium (Mg) doped thin films on a clean glass substrate at a temperature equal to 400°C. X-ray diffraction test revealed a cubic wurtzite crystal structure with average crystallite sizes of 10.99 and 12.27 nm for ZnS and ZnS: Mg, respectively. XRD analysis of the doped films revealed a polycrystalline structure with a predominant peak along the (220) plane and additional peaks along the (111), (200), and (222) planes. The grain size raised from 10.99 to 12.27 nm as a result of the XRD patterns. The increase in Mg content from 0% to 3%, affect the bandgap that fell from 3.52 to 3.42 eV. As the Mg content increased, the transmittance and refractive index of the films was lowered.

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Section: Optical Propertiesmentioning

confidence: 99%

Preparation and analysis of Ag2Se1-xTex thin film structure on the physical properties at various temperatures by thermal evaporation

Ali¹,

Khudayer²

2023

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“…Figure (7) shows that the decrease in value of extinction coefficient (k) when increasing the value of doping this may be due to increasing the absorption coefficient [38,39].…”

Section: Optical Properties Studymentioning

confidence: 99%

Effect of silver-doping on the structural, topography and optical CdSe thin films

Jasim¹,

Hadi²,

Chiad³

et al. 2023

JOR

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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 of the CdSe thin film decreases and the root mean square decreases with (2 and 4) % doping in silver. As the doping content increase, the optical energy bandgap decrease from 1.85 eV to 1.75 eV. Optical analysis indicates that Ag doping in CdSe results in a redshift in band edge.

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“…α with photon energy (hν) is utilized to evaluate energy bandgap E g . The direct transition is expressed by Equation 1 [47][48][49]:…”

Section: Optical Propertiesmentioning

confidence: 99%

Investigation physical properties of sprayed Cr doped ZnO thin ﬁlms

Saleh,

Dawood,

Chiad

et al. 2023

JOR

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ZnO and ZnO:Cr films were grown by the chemical spray deposition (CSD). The effect of the Cr content on ZnO was studied. All ZnO films show polycrystalline, hexagonal wurtzite structure, with (002) dominant plane. AFM displayed that films have a compact surface, its root mean square roughness increased with Cr percentage. The average diameter was smaller than 64 nm. The optical bandgap was evaluated using Transmittance data. Their values were found to be decreases via increment in Cr doping.

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Sensitivity of Nanostructured Mn-Doped Cobalt Oxide Films for Gas Sensor Application

Cited by 23 publications

References 37 publications

Preparation and analysis of Ag2Se1-xTex thin film structure on the physical properties at various temperatures by thermal evaporation

Preparation and analysis of Ag2Se1-xTex thin film structure on the physical properties at various temperatures by thermal evaporation

Effect of silver-doping on the structural, topography and optical CdSe thin films

Investigation physical properties of sprayed Cr doped ZnO thin ﬁlms

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