Electronic and Optical Properties of Semiconductor and Alkali Halides

Ahmad, S.H.A.; Ashraf, Mudasir; Ahmad, Aijaz; Singh, Dharam Raj

doi:10.1007/s13369-013-0551-z

Cited by 18 publications

(7 citation statements)

References 24 publications

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“…Generally, the n of Pb-Sn-S TFs is related to the optical band gaps. Moreover, the refractive index of the prepared Pb-Sn-S films was estimated using the proposed relation by Herve and Vandamme, given in equation (3) [21,22]…”

Section: Optical Studiesmentioning

confidence: 99%

Deposition Time induced Structural and Optical Properties of Lead Tin Sulphide Thin Films

Damisa¹,

Emegha

Ikhioya

2021

J. Nig. Soc. Phys. Sci.

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Lead tin sulphide (Pb-Sn-S) thin films (TFs) were deposited on fluorine-doped tin oxide (FTO) substrates via the electrochemical deposition process using lead (II) nitrate [Pb(NO3)2], tin (II) chloride dehydrate [SnCl2.2H2O] and thiacetamide [C2H5NS] precursors as sources of lead (Pb), tin (Sn) and sulphur (S). The solution of all the compounds was harmonized with a stirrer (magnetic) at 300k. In this study, we reported on the improvements in the properties (structural and optical) of Pb-Sn-S TFs by varying the deposition time. We observed from X-ray diffractometer (XRD) that the prepared material is polycrystalline in nature. UV-Vis measurements were done for the optical characterizations and the band gap values were seen to be increasing from 1.52 to 1.54 eV with deposition time. In addition to this, the absorption coefficient and refractive index were also estimated and discussed.

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Section: Optical Studiesmentioning

confidence: 99%

Deposition Time induced Structural and Optical Properties of Lead Tin Sulphide Thin Films

Damisa¹,

Emegha

Ikhioya

2021

J. Nig. Soc. Phys. Sci.

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“…(3). We also calculate the ′ Classical and ′ from n and E g respectively using the following relation [61][62][63]:…”

Section: Optical Propertiesmentioning

confidence: 99%

Structural, optical and magnetic properties of Ni1−xZnxO/Ni nanocomposite

et al. 2019

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Ni 1−x Zn x O/Ni nanocomposite samples synthesized by wet chemical method were characterized by X-ray powder diffraction, Fourier Transform Infrared (FTIR) spectrometer, UV-Vis spectrometer and Nine Tesla Physical Property Measurement System (PPMS)-based vibrating sample magnetometer (VSM). XRD spectra contained peaks due to NiO and Ni. Rietveld refinement of XRD data indicated the change in lattice parameter is more than twice in NiO than in Ni suggests that Zn goes more favorably into NiO than in Ni. The band gap of NiO in Ni 1−x Zn x O/Ni samples increased from 3.58 to 3.81 eV with increasing x from 0 to 0.07 and thereafter the band gap slightly decreases. NiO/Ni nanocomposites show strong room temperature ferromagnetism. The ferromagnetic interaction further enhanced with 1% of Zn doping into NiO in NiO/Ni nanocomposite. Beyond this doping concentration, the magnetic interaction does not show any systematic variation. The observation of room temperature ferromagnetism in nanocomposite samples is explained by combining the effect of bound magnetic polaron and the magnetization of system with the distribution of magnetic ions as meagerly dispersed in large clusters. Our study indicated that Ni 0.99 Zn 0.01 O/Ni nanocomposite sample could be useful for magnetic recording device application.

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“…As can be seen in Table I, the agreement between the calculated values of α using relations (16) and (19) is very good. Relation (19) should therefore prove useful in an estimation of the electronic polarizability directly from the energy gap of the semiconductor [18]. It is …”

Section: Dielectric Studiesmentioning

confidence: 99%

Synthesis and Characterization of Manganese Sulphide Thin Films by Chemical Bath Deposition Method

2017

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Manganese sulphide (MnS) thin films were prepared by chemical bath deposition method. X-ray diffraction analysis was used to study the structure and the crystallite size of MnS thin films. The grain size and the surface morphology were studied using scanning electron microscopy. The optical properties were studied using the UVvisible absorption spectrum. The dielectric properties of MnS thin films were studied for different frequencies and different temperatures. Further, electronic properties, such as valence electron plasma energy, average energy gap or the Penn gap, the Fermi energy and electronic polarizability of the MnS thin films were calculated. The ac electrical conductivity study revealed that the conduction depended both on the frequency and the temperature. The temperature dependent conductivity study confirmed the semiconducting nature of the films.

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Electronic and Optical Properties of Semiconductor and Alkali Halides

Cited by 18 publications

References 24 publications

Deposition Time induced Structural and Optical Properties of Lead Tin Sulphide Thin Films

Deposition Time induced Structural and Optical Properties of Lead Tin Sulphide Thin Films

Structural, optical and magnetic properties of Ni1−xZnxO/Ni nanocomposite

Synthesis and Characterization of Manganese Sulphide Thin Films by Chemical Bath Deposition Method

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