The influence of hydrazine hydrate on the photoconductivity of PbS thin film

Ghamsari, M. Sasani; Araghi, Mehdi; Farahani, S.J.

doi:10.1016/j.mseb.2006.06.021

Cited by 16 publications

(7 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The obtained values of the optical band gap for different thicknesses are shown in Figure 7(a). The plots of αhυ 2 as a function of hυ are shown in Figure 7(a) in accordance with (1), which is valid for energies hυ not exceedingly high, where A is a constant, hυ is the photon energy, E g is the band gap, and p is 0.5. Figure 7(b) shows that the optical band gap decreases slightly from 2.75 ± 0.02 eV to 2.29 ± 0.02 eV with the thickness increasing from 70 nm to 200 nm, which indicates that the band gap value is, to some extent, influenced by the sample thickness.…”

Section: Opticalsupporting

confidence: 77%

See 1 more Smart Citation

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

Abdallah

Ismail

Kashoua

et al. 2018

Journal of Nanomaterials

View full text Add to dashboard Cite

Lead sulfide thin films were prepared by chemical bath deposition (CBD) on both glass and Si (100) substrates. XRD analysis of the PbS film deposited at 25°C showed that the prepared films have a polycrystalline structure with (200) preferential orientation. Larger grains could be obtained by increasing the deposition time. The prepared films were also chemically characterized using X-ray photoelectron spectroscopy (XPS), which confirmed the presence of lead and sulfur as PbS. While energy dispersive X-ray spectroscopy (EDX) technique was used to verify the stoichiometry of the prepared films. Atomic force microscopy (AFM) was used to study the change in the films’ morphology with the deposition time. The effect of the deposition time, on both optical transmittance in the UV-Vis-NIR region and the structure of the film, was studied. The obtained results demonstrated that the optical band gap decreased when the thickness increased.

show abstract

Section: Opticalsupporting

confidence: 77%

“…Lead sulfide (PbS) has attracted great interest due to its enormous applications in the field of optoelectronics such as infrared (IR) detection [1], solar cell [2], quantum dots applications [3], and selective coating for photothermal conversion [4]. PbS is a semiconductor with direct narrow energy gap of 0.37-0.4 eV at room temperature.…”

Section: Introductionmentioning

confidence: 99%

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

Abdallah

Ismail

Kashoua

et al. 2018

Journal of Nanomaterials

View full text Add to dashboard Cite

show abstract

“…The reduction of Te can be represented as: HTeO 2 − + 3H + + 4e − → Te ads + 2H 2 O, where Te ads indicates that Tellurium atoms are absorbed in an electrolyte solution. When the potential reaches −0.17 V, another reduction wave started, which is attributed to the production of H 2 Te [ 41 ]. Each of the reduction peaks were some sort of limited deposition.…”

Section: Resultsmentioning

confidence: 99%

“…where Te ads indicates that Tellurium atoms are absorbed in an electrolyte solution. When the potential reaches −0.17 V, another reduction wave started, which is attributed to the production of H 2 Te [41].…”

Section: Cyclic Voltammetry (Cv) Studiesmentioning

confidence: 99%

“…In the lead chalcogenide synthesis, PbX (PbX, X = Te, S, Se) material films are synthesized by chemical technique [ 36 , 37 , 38 ]. Seleno-sulfate (Na 2 SeSO 3 ) is used widely as Se source by various groups for the synthesis of PbSe on glass substrate material [ 39 , 40 , 41 ]. Thiourea SC(NH₂)₂ or sodium thiosulfate (Na 2 S 2 O 3 xH 2 O) as sources of S are used for the synthesis of PbS on glass and silicon substrate materials [ 42 , 43 , 44 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Facile Chemical Synthesis of PbTe Nanostructures at Room Temperature

Gite

Palve

Gaikwad³

et al. 2020

Nanomaterials

View full text Add to dashboard Cite

Thermoelectric (TE) materials are possible solutions of the current problems in the energy sector to overcome environmental pollution, increasing energy demand and the decline of natural resources. Thermoelectric materials are a promising alternative for the conversion of waste heat to electricity. Nanocrystalline PbTe powder was synthesized by a simple chemical method at room temperature and systematically investigated at various durations as samples A1–A5. Fourier Transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), microstructural analysis by scanning electron microscopy (SEM), and energy dispersive spectroscopy (EDS) confirmed the composition of the samples. TE parameters as thermo-emf of samples A1–A5 and electrical conductivity were measured. The cyclic voltammetry gives a band gap of 0.25 eV, which is in agreement with the optical band gap of the material. The A4 sample has an average crystal size of 36 nm with preferred orientation in (200) verifying the cubic morphology. The obtained TE parameters are beneficial for the non-uniform TE materials which might be due to strong current boundary scattering and extremely low thermal conductivity of the samples.

show abstract

Characteristics of pulse electrodeposited PbS thin films

Thirumoorthy¹,

Murali

2010

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

The influence of hydrazine hydrate on the photoconductivity of PbS thin film

Cited by 16 publications

References 21 publications

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

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

A Facile Chemical Synthesis of PbTe Nanostructures at Room Temperature

Characteristics of pulse electrodeposited PbS thin films

Contact Info

Product

Resources

About