Investigation the effect of annealing parameters on the physical properties of electrodeposited ZnS thin films

Zakerian, Farbod; Kafashan, Hosein

doi:10.1016/j.spmi.2018.09.039

Cited by 42 publications

(21 citation statements)

References 36 publications

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“…The reflectance spectrum of the amorphous ZnS thin film demonstrated a broad and distinct dip in the 450–500 nm range with a reflectance value of about 0.1. Similar reflectance minimums were observed for the ZnS/Au/Ti multilayer structure deposited on the Si substrate [40] and in electrodeposited ZnS thin films after annealing treatments [41]. Moreover, a significant transmittance of ~70% at around 540 nm [42] and ~90% at around 550 nm [43] was observed for the ZnS layer thickness of 64 and 40 nm, respectively.…”

Section: Resultssupporting

confidence: 68%

Structural and Optical Characterization of ZnS Ultrathin Films Prepared by Low-Temperature ALD from Diethylzinc and 1.5-Pentanedithiol after Various Annealing Treatments

et al. 2019

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The structural and optical evolution of the ZnS thin films prepared by atomic layer deposition (ALD) from the diethylzinc (DEZ) and 1,5-pentanedithiol (PDT) as zinc and sulfur precursors was studied. A deposited ZnS layer (of about 60 nm) is amorphous, with a significant S excess. After annealing, the stoichiometry improved for annealing temperatures ≥400 °C and annealing time ≥2 h, and 1:1 stoichiometry was obtained when annealed at 500 °C for 4 h. ZnS crystallized into small crystallites (1–7 nm) with cubic sphalerite structure, which remained stable under the applied annealing conditions. The size of the crystallites (D) tended to decrease with annealing temperature, in agreement with the EDS data (decreased content of both S and Zn with annealing temperature); the D for samples annealed at 600 °C (for the time ≤2 h) was always the smallest. Both reflectivity and ellipsometric spectra showed characteristics typical for quantum confinement (distinct dips/peaks in UV spectral region). It can thus be concluded that the amorphous ZnS layer obtained at a relatively low temperature (150 °C) from organic S precursor transformed into the layers built of small ZnS nanocrystals of cubic structure after annealing at a temperature range of 300–600 °C under Ar atmosphere.

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Section: Resultssupporting

confidence: 68%

Structural and Optical Characterization of ZnS Ultrathin Films Prepared by Low-Temperature ALD from Diethylzinc and 1.5-Pentanedithiol after Various Annealing Treatments

et al. 2019

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“…[ 24 ] The energy gap of ZnS thin film was decreased after annealing. [ 25 ] ZnS thin film before annealing has a cubic structure while after annealing it has a hexagonal structure, therefore the energy should increase but it decreased. [ 25 ] The authors argued this finding to the importance of annealing temperature to control the physical properties of ZnS thin film.…”

Section: Resultsmentioning

confidence: 99%

“…[ 25 ] The authors argued this finding to the importance of annealing temperature to control the physical properties of ZnS thin film. [ 25 ]…”

Section: Resultsmentioning

confidence: 99%

“…[ 24 ] Annealing ZnS thin film at 200 and 300 °C improves the film absorption in the visible and UV region of light, respectively. [ 25 ] There are many methods used to prepare sulfide materials, among them is the thermolysis procedure, which is a simple, low cost, mass‐scale amount route, and no solvent is needed during the reaction and accordingly, no waste disposal issues related to the solvent are needed to be considered. In this work, the effect of synthesis temperature on the formation of manganese or ZnS prepared by the thermolysis method was investigated using the search‐match program X'Pert HighScore Plus.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Synthesis Temperature on the Phases Developed and Optical Properties of Manganese Sulfide and Zinc Sulfide

Mohamed

Farag

Ahmed

2021

Crystal Research and Technology

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Nano MnS and ZnS samples are prepared through a simple thermolysis procedure. The effect of synthesis temperature on the different phases formed and their percentages, and on the lattice parameters and crystallite size of MnS and ZnS is examined using Rietveld analysis for X‐ray diffraction patterns. The minimum synthesis temperature at which MnS can be formed by the present simple procedure is 250 °C, while ZnS can be prepared at a lower temperature of 200 °C. For manganese sulfide, traces of Mn3O4 phase appear at 300 °C and increase with temperature, while ZnS resists oxidation until 500 °C; pure ZnO forms at 700 °C. The MnS and ZnS samples, obtained at all temperatures, are found to be biphasic; cubic and hexagonal. The nano nature of the samples and the particle morphology are investigated by high‐resolution transmission electron microscopy. Fourier‐transform infrared spectroscopy is applied to follow the characteristic vibration bands in both systems. The values of the different energy gaps depend on the crystallite size, phases’ percentages, and the preparation temperature. The photoluminescence intensity and the emitted colors from MnS and ZnS depend on the synthesis temperature.

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“…In addition, the lower PL intensity may be explained by multiple reflections, due to the Ag 2 S shell overlayers. Since the Ag 2 S shell has a smaller refractive index (2.2) than that of the ZnS core (2.35) [36], Ag 2 S shell can act as an antireflection layer and confine light rays into the ZnS core [37]. An illustration of possible reflection mechanisms in the interfaces of ZnS-Ag 2 S CSNHs is suggested in Fig.…”

Section: Photoluminescence (Pl) Spectroscopymentioning

confidence: 99%

Facile synthesis of ZnS–Ag2S core–shell nanospheres with enhanced nonlinear refraction

Haghighatzadeh

Kiani

Mazinani

et al. 2019

J Mater Sci: Mater Electron

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ZnS-Ag 2 S core-shell nano/hetero-junctions have been synthesized by a two-step co-precipitation technique, in which thin layers of Ag 2 S have been successfully coated on the surface of ZnS nanospheres. Structural studies and elemental analysis have been performed using X-ray diffraction, Fourier transfer infrared spectroscopy, field emission scanning electron microscopy, energy dispersive spectroscopy, and high-resolution transmission electron microscopy. UV-Vis diffuse reflectance spectroscopy and photoluminescence spectroscopy have been employed to investigate linear optical characteristics. Nanosecond laser pulsed-based single-beam Z-scan analysis has been used to examine the magnitude and the sign of the third-order nonlinear refractive indices. Samples show negative values of nonlinear refractive indices indicating self-defocusing optical nonlinearity under 1064 nm excitation. The results have shown that the third-order nonlinear refractive index in ZnS nanospheres can reach the magnitude of 61.0 × 10 −12 m 2 ∕W by encapsulating such a nanostructure within nanometer shells of Ag 2 S. The enhanced nonlinearity for ZnS-Ag 2 S core-shells has been found to be 9 times higher than sole ZnS nanoparticles, which was estimated to be about 6.4 × 10 −12 m 2 ∕W.

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Investigation the effect of annealing parameters on the physical properties of electrodeposited ZnS thin films

Cited by 42 publications

References 36 publications

Structural and Optical Characterization of ZnS Ultrathin Films Prepared by Low-Temperature ALD from Diethylzinc and 1.5-Pentanedithiol after Various Annealing Treatments

Structural and Optical Characterization of ZnS Ultrathin Films Prepared by Low-Temperature ALD from Diethylzinc and 1.5-Pentanedithiol after Various Annealing Treatments

Influence of Synthesis Temperature on the Phases Developed and Optical Properties of Manganese Sulfide and Zinc Sulfide

Facile synthesis of ZnS–Ag2S core–shell nanospheres with enhanced nonlinear refraction

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