Effects of Deposition Time on the Morphology, Structure, and Optical Properties of PbS Thin Films Prepared by Chemical Bath Deposition

Abdallah, B.; Ismail, Anas; Kashoua, H.; Zetoun, W.

doi:10.1155/2018/1826959

Cited by 33 publications

(15 citation statements)

References 34 publications

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“…The optimal thickness of 399.62 nm was obtained at a deposition time of 5 mins while the least thickness of 294.35 nm was obtained at 1 min of deposition time. This trend of increase in thickness as deposition time increases is similar to those obtained by [26][27][28][29].…”

Section: Thickness Measurementsupporting

confidence: 87%

Properties of Electrosynthesized Cobalt Doped Zinc Selenide Thin Films Deposited at Varying Time

Ezenwaka

Okoli²,

Okereke

et al. 2021

Nanoarchitectonics

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Time optimized cobalt-doped zinc selenide thin films have been successfully electrodeposited on fluorine-doped tin oxide substrates. The films were deposited at the varying time of 1 min, 3 mins, and 5 mins respectively. Film thickness, optical, structural, electrical, and morphological properties of the deposited thin films were evaluated. Film thickness estimated using the gravimetric method increased from 294.35 nm to 399.62 nm as deposition time increased. Optical properties showed that the absorbance of the films ranged from 13.58% to 83.15% and was found to increase as deposition time increased. Transmittance ranged from 24.40% to 73.15% and was found to decrease as deposition time increased. The reflectance of the films was found to be low while the energy band gap ranged between 2.10 eV and 2.85 eV. Structural properties confirmed the deposition of ZnSe thin film with crystallite size values that fall between 14.68 nm and 18.60 nm. Dislocation density is ranged from 4.66 × 1015 lines/m2 to 2.97 × 1015 lines/m2 while microstrain ranged between 8.53 × 10-3 and 5.83 × 10-3. Crystallite sizes of the films were found to increase as deposition time increased while dislocation density and microstrain were found to decrease as deposition time increased. Electrical properties showed that the deposited films are semiconducting films with electrical resistivity values of 1.54 × 105 Ω cm-1.83 × 104 Ω cm and electrical conductivity values of 6.30 × 10-6 S/cm-5.47 × 10-5 S/cm. The micrograph of the films showed that the films were made up of nanoparticles and nanofibres of different dimensions. Energy-Dispersive X-Ray Spectroscopy (EDS) spectra of the films confirmed the presence of cobalt, zinc, and selenium.

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Section: Thickness Measurementsupporting

confidence: 87%

Properties of Electrosynthesized Cobalt Doped Zinc Selenide Thin Films Deposited at Varying Time

Ezenwaka

Okoli²,

Okereke

et al. 2021

Nanoarchitectonics

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“…Even though the formation of flower like structure is characteristic of this preparation technique, the highlighting factor in this study is, the flower like structure have been rarely reported in the case of PbS thin films. There are reports of surface images of PbS thin films with granular structures of well -defined grain boundary [15,16]. The petal-to-petal size of the flowers is found to be slightly increased by increasing the deposition time.…”

Section: Surface Morphologymentioning

confidence: 99%

“…Even though PbS is a widely investigated material due to its varied applications, the field of gas sensors is a less explored area [15][16][17]. The desired characteristic of a thin film as a gas sensor is the roughness of the surface with large surface area.…”

Section: Introductionmentioning

confidence: 99%

Effect of Deposition Time on Structural and Optoelectronic Properties of Flower-Like Nanostructured PbS Thin Films

Sheeba¹,

Namitha²,

Ramsiya³

et al. 2021

J. Sci. Res.

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Polycrystalline nanostructured PbS thin ﬁlms are deposited onto soda-lime glass substrates by the method of chemical bath deposition (CBD) at different duration of deposition time. The structure and surface morphology of the ﬁlms are characterized by X-ray diﬀraction (XRD) and field effect scanning electron microscopy (FE-SEM). XRD pattern exhibits polycrystalline structure with preferential orientation along (200) direction, parameters such as crystallite size, lattice constant, lattice-strain and dislocation density are calculated. The FE-SEM images show appearance of flower like structure on formation of PbS films which is indicative of suitability in gas sensing applications. Studies on optical properties carried out by UV-Vis spectroscopy measurements show bandgap in the range 1.65eV – 1.41eV. The photoluminescence spectra of the films exhibit two peaks centered at around 613 nm and 738 nm after excitation at 450 nm. Electrical studies from Hall measurements indicate the carrier concentration and mobility of the PbS samples corroborate the variations in the conductivity.

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“…In many previous works, the (200) preferential growth was observed for PbS thin lms. 34,38 The variation of preferred orientation can be explained from the thermodynamic point of view. Xigui et al have proposed that the reason for this variation is the change of the total system free energy during the lm growth which is affected by the surface, interface and strain energy contributions.…”

Section: Xrd Study and Edx Analysismentioning

confidence: 99%

The structure and photoelectrochemical activity of Cr-doped PbS thin films grown by chemical bath deposition

2020

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Effects of Deposition Time on the Morphology, Structure, and Optical Properties of PbS Thin Films Prepared by Chemical Bath Deposition

Cited by 33 publications

References 34 publications

Properties of Electrosynthesized Cobalt Doped Zinc Selenide Thin Films Deposited at Varying Time

Properties of Electrosynthesized Cobalt Doped Zinc Selenide Thin Films Deposited at Varying Time

Effect of Deposition Time on Structural and Optoelectronic Properties of Flower-Like Nanostructured PbS Thin Films

The structure and photoelectrochemical activity of Cr-doped PbS thin films grown by chemical bath deposition

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