Physical properties of Pb doped ZnS thin films prepared by ultrasonic spray technique

Attaf, A.; Derbali, A.; Saïdi, H.; Benamra, H.; Aida, M.S.; Attaf, N.; Ezzaouia, Hatem; Derbali, Lotfi

doi:10.1016/j.physleta.2019.126199

Cited by 17 publications

(8 citation statements)

References 50 publications

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“…The Urbach tail, with an associated Urbach energy, is responsible for the absorption tail produced by these localized defect states, which extends far into the band gap [66]. The Urbach energy was calculated from the absorption spectrum using the formulas below [73]:…”

Section: Physicochemical Characterization Of Bt Bt/co-e and Bt-co-p E...mentioning

confidence: 99%

Photocatalyst Based on Nanostructured TiO2 with Improved Photocatalytic and Antibacterial Properties

Irodia,

Ungureanu,

Sătulu

et al. 2023

Materials

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This study shows an easy way to use electrochemistry and plasma layering to make Cobalt-Blue-TiO2 nanotubes that are better at catalysing reactions. Once a titanium plate has been anodized, certain steps are taken to make oxygen vacancies appear inside the TiO2 nanostructures. To find out how the Co deposition method changed the final catalyst’s properties, it was put through electrochemical tests (to find the charge transfer resistance and flat band potential) and optical tests (to find the band gap and Urbach energy). The catalysts were also described in terms of their shape, ability to stick to surfaces, and ability to inhibit bacteria. When Cobalt was electrochemically deposited to Blue-TiO2 nanotubes, a film with star-shaped structures was made that was hydrophilic and antibacterial. The band gap energy went down from 3.04 eV to 2.88 eV and the Urbach energy went up from 1.171 eV to 3.836 eV using this electrochemical deposition method. Also, photodegradation tests with artificial doxycycline (DOX) water were carried out to see how useful the study results would be in real life. These extra experiments were meant to show how the research results could be used in real life and what benefits they might have. For the bacterial tests, both gram-positive and gram-negative bacteria were used, and BT/Co-E showed the best response. Additionally, photodegradation and photoelectrodegradation experiments using artificial doxycycline (DOX) water were conducted to determine the practical relevance of the research findings. The synergistic combination of light and applied potential leads to 70% DOX degradation after 60 min of BT/Co-E irradiation.

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Section: Physicochemical Characterization Of Bt Bt/co-e and Bt-co-p E...mentioning

confidence: 99%

Photocatalyst Based on Nanostructured TiO2 with Improved Photocatalytic and Antibacterial Properties

Irodia,

Ungureanu,

Sătulu

et al. 2023

Materials

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“…For example, depending on the crystalline quality of the AlN substrate ZnO deposited films show an epitaxial growth [19,20]. Extensive studies have been reported on ZnS nanostructures doped with different transition metal ions (such as Co, Mn, Ni, Fe) prepared by different techniques [21][22][23][24]. Depending on the type of dopant ion, the doped materials exhibit different luminescent, electronic and magnetic properties.…”

Section: Fig 1 the Cubic Unit Cell Of Zinc Blende (A) And The Hexagmentioning

confidence: 99%

HRTEM, XPS and XRD characterization of ZnS/PbS nanorods prepared by thermal evaporation technique

Abadllah¹,

Assfour²,

Kakhia³

et al. 2020

Nanosystems: Phys. Chem. Math.

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Zinc sulfide (ZnS) and zinc sulfide/lead sulfide (ZnS/PbS) nanorods were grown on glass substrates using a thermal evaporation method. The morphology of the prepared samples has been studied by transmission electron microscopy (TEM), field-emission scanning electron microscopy (FE-SEM) and Scanning Electron Microscopy (SEM). Both differences and similarities in morphology between the samples have been discovered. In the ZnS/PbS sample, ZnS nanorods were formed with diameter less than 50 nm and length between 2000 and 3000 nm. The pure ZnS sample has dense structure and its thickness was about 200 nm. Samples were studied in detail using energy-dispersive X-ray spectroscopy (EDX). The surface chemical compositions of the samples were confirmed by means of X-ray photoelectron spectroscopy (XPS). The determination of the crystal structure using the X-ray diffraction revealed that two phases of ZnS, blende and wurtzite, are present in the sample after adding Pb, while only blende is identified in the pure ZnS sample.

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“…Changing the presence of dopant can change the composition of ZnS [11][12][13]. Impuritydoped ZnS has different properties than undoped ZnS.…”

Section: Introductionmentioning

confidence: 99%

“…Impuritydoped ZnS has different properties than undoped ZnS. Aluminum (Al), indium (In), chromium (Cr), gallium (Ga), fluorine (F), copper (Cu), chlorine (Cl), boron (B), and manganese (Mg) seem to be dopants that could be used to modify the features of ZnS [11][12][13][14][15]. AZS films have excellent properties among doped ZnS materials [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Study the optical parameters of aluminum doped ZnS films deposited on soda-lime glass substrate

Eisa¹,

Abdulla²

2022

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Zinc Sulfide (ZnS) thin films have gained popularity due to their potential field applications. ZnS doped with various elements is redefining academic and industrial research. Pulsed laser deposition (PLD) was applied in the deposition process of undoped ZnS and aluminum (Al) doped zinc sulfide (AZS) on cleaned soda lime glass substrates. The doping effects of aluminum concentration (0, 2, 4, and 6%) on the characteristics of ZnS films were investigated. The ZnS and AZS thin films exhibited a direct allowed bandgap in the range of 3.40 to 3.56 eV, The band gap has been observed to be higher (3.56 eV) indicating blue shift. The linear optical parameters such as oscillator energy (E0), dispersion energy (Ed), and static refractive index (n0) were calculated using Wemple and DiDominco's model to find the nonlinear optical susceptibility χ 3 and nonlinear refractive index n2. The increasing nonlinear parameters χ 3 and n2 suggest nonlinear optical applications for AZS. The experimental methods and results are described, and the results are compared to published data.

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Physical properties of Pb doped ZnS thin films prepared by ultrasonic spray technique

Cited by 17 publications

References 50 publications

Photocatalyst Based on Nanostructured TiO2 with Improved Photocatalytic and Antibacterial Properties

Photocatalyst Based on Nanostructured TiO2 with Improved Photocatalytic and Antibacterial Properties

HRTEM, XPS and XRD characterization of ZnS/PbS nanorods prepared by thermal evaporation technique

Study the optical parameters of aluminum doped ZnS films deposited on soda-lime glass substrate

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