Effect of magnesium incorporation on the structural, morphological, optical and electrical properties of CdS thin films

Sivaraman, T.; Balu, A. R.; Nagarethinam, V. S.

doi:10.1016/j.mssp.2014.08.024

Cited by 72 publications

(25 citation statements)

References 25 publications

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“…The S vacancies act as deep level traps for electrons and they can exothermically extract electrons from the valence band. This is in accordance with the results reported by Sivaraman et al [23] for Mg-doped CdS thin films. The emission peak at 521 nm may be due to the presence of electron hole recombination via trap states or imperfection sites [24].…”

Section: Resultssupporting

confidence: 94%

Optimization of S:Sn precursor molar concentration on the physical properties of spray deposited single phase Sn₂S₃thin films

Srivind¹,

Nagarethinam²,

Balu³

2016

Materials Science-Poland

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Nanoneedle structured Sn 2 S 3 thin films were prepared by spray pyrolysis technique from aqueous solutions of tin (II) chloride and thiourea, keeping the molar concentrations of S:Sn = 0.01:0.01, 0.02:0.02, 0.03:0.03 and 0.04:0.04 in the starting solutions. XRD studies reveal that all the films exhibit orthorhombic crystal structure with a preferential orientation along the [2 1 1] direction. The peak intensity of the (2 1 1) plane is found to be maximum for the film coated with 0.02:0.02 S:Sn molar concentration which confirms the improved crystalline nature of this film. SEM images depict that the film coated with S:Sn molar concentration 0.02:0.02 exhibit needle shaped grains. The optical band gap exhibits red shift from 2.12 eV to 2.02 eV with an increase in S:Sn precursor molar concentration. Electrical studies show that the films having S:Sn molar concentrations 0.01:0.01 and 0.02:0.02 exhibit minimum resistivity values of 0.238 and 0.359 Ω·cm, respectively.

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Section: Resultssupporting

confidence: 94%

Optimization of S:Sn precursor molar concentration on the physical properties of spray deposited single phase Sn₂S₃thin films

Srivind¹,

Nagarethinam²,

Balu³

2016

Materials Science-Poland

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“…It has been reported earlier that the optoelectronic properties of CdS thin films can be improved by doping with metallic and non-metallic ions having ionic radii smaller than the host ions. Improved optical and electrical properties have been reported by Anbarasi et al 7 and Sivaraman et al 8 for Zn and Mg doped CdS thin films. Improved conductivity has also been reported for CdS films doped with copper.…”

Section: Introductionmentioning

confidence: 72%

Properties of CdS films doped with magnesium and fluorine

Sivaraman¹,

Nagarethinam²,

Balu³

2016

Surface Engineering

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Nanostructured CdS thin films co-doped with Mg and F were prepared on glass substrates maintained at 400°C by spray technique using perfume atomiser. Structural, morphological, optical and electrical properties of the films were investigated in order to study the effect of Mg, F doping concentration. XRD patterns confirm that both undoped and co-doped CdS films exhibit hexagonal crystal structure with preferential orientation along the (0 0 2) plane. Crystallite size decreased from 33.19 to 24.51 nm with increase in Mg, F concentration. Increased transparency and blue shift in optical band gap from 2.48 to 2.75 eV is observed with increase in Mg, F concentration. All the films have resistivity in the order of 10 −2 Ω cm which decreased with co-doping. Improved optical transparency, widened band gap and decreased resistivity were observed for the CdS films simultaneously doped with Mg and F.

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“…Information regarding the point defects present in thin films such as vacancies, interstitials and impurities can be obtained from PL studies [23]. Figure 6 displays the PL spectra of the undoped and Mg-doped Sn 2 S 3 (Mg doping levels: 2 and 3 wt%) thin films, excited at λ = 400 nm.…”

Section: Pl Studiesmentioning

confidence: 99%

Investigations on the Properties of Nanostructured Mg-Doped Sn₂S₃ Thin Films towards Photovoltaic Applications

Gnanamuthu¹,

Punithavathy²,

Jeyakumar³

et al. 2018

Acta Phys. Pol. A

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This paper reports the synthesis, crystal structure, surface morphology, optical and electrical properties of Mgdoped Sn2S3 thin films deposited by spray pyrolysis technique. All the films exhibit orthorhombic crystal structure with a (211) preferential orientation. Crystallite size calculations based on the Debye-Scherrer formula indicated that the Sn2S3 crystallite size increases with Mg content from 27.97 nm to 33.58 nm. Scanning electron microscopy images showed that all the films were very smooth composed of nanoneedle and nanoplate shaped grains. The band gap energy of the films exhibits a blue shift from 1.94 eV to 2.09 eV with increase in Mg concentration. Resistivity values of the undoped and Mg-doped Sn2S3 films were found to be in the order of 0.1 Ωcm. From the obtained results it is observed that the Sn2S3 film coated with 2 wt% Mg concentration exhibits better physical properties.

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Effect of magnesium incorporation on the structural, morphological, optical and electrical properties of CdS thin films

Cited by 72 publications

References 25 publications

Optimization of S:Sn precursor molar concentration on the physical properties of spray deposited single phase Sn₂S₃thin films

Optimization of S:Sn precursor molar concentration on the physical properties of spray deposited single phase Sn₂S₃thin films

Properties of CdS films doped with magnesium and fluorine

Investigations on the Properties of Nanostructured Mg-Doped Sn₂S₃ Thin Films towards Photovoltaic Applications

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Effect of magnesium incorporation on the structural, morphological, optical and electrical properties of CdS thin films

Cited by 72 publications

References 25 publications

Optimization of S:Sn precursor molar concentration on the physical properties of spray deposited single phase Sn2S3thin films

Optimization of S:Sn precursor molar concentration on the physical properties of spray deposited single phase Sn2S3thin films

Properties of CdS films doped with magnesium and fluorine

Investigations on the Properties of Nanostructured Mg-Doped Sn2S3 Thin Films towards Photovoltaic Applications

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Product

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Optimization of S:Sn precursor molar concentration on the physical properties of spray deposited single phase Sn₂S₃thin films

Optimization of S:Sn precursor molar concentration on the physical properties of spray deposited single phase Sn₂S₃thin films

Investigations on the Properties of Nanostructured Mg-Doped Sn₂S₃ Thin Films towards Photovoltaic Applications