Synthesis, structural, optical, electrical and thermoluminescence properties of chemically deposited PbS thin films

Göde, Fatma; Güneri, Emine; Emen, Fatih Mehmet; Kafadar, V. Emir; Ünlü, Serdar

doi:10.1016/j.jlumin.2013.10.050

Cited by 86 publications

(34 citation statements)

References 34 publications

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“…The optical band gap values are in good agreement with the reported values [11][12][13][14]. An increase in the band gap width can be attributed to the quantum confinement effect [15] due to the small grain size in the CdSe thin films with increasing pH.…”

Section: Resultssupporting

confidence: 89%

Fabrication and Optical Characterization of CdSe Thin Films Grown by Chemical Bath Deposition

2015

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Cadmium selenide thin films with different pH values (pH = 10, 11, 12 and 13) are produced on glass substrates at 50• C for 3 h by chemical bath deposition technique. The structural, morphological and optical properties of the films are characterized by X-ray diffraction, scanning electron microscopy and optical absorption spectroscopy, respectively. The obtained films have hexagonal structure. The optical transparency of the films varies between 85% and 98% at wavelength of λ = 550 nm. The scanning electron microscopy studies show that the film deposited at pH = 10 exhibits the formation of nanorods in the width range from 1.8 µm to 10.9 µm and length range from 20.0 µm to 85.5 µm. The optical properties of the films are determined by measuring transmittance and absorbance characteristics which are used to find the optical band gap energy, refractive index, extinction coefficient and real dielectric constant. The band gap width of the films increases from 1.70 eV to 2.30 eV with increasing pH values. The refractive index of the film at pH = 10 is found as 1.54.

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Section: Resultssupporting

confidence: 89%

Fabrication and Optical Characterization of CdSe Thin Films Grown by Chemical Bath Deposition

2015

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“…Well crystallized, with good surface homogeneity and roughness cubic PbS films were prepared and studied by S. Seghaier et al [12]. Decrease of band gap from 2.65-2.50 eV with increasing deposition time was obtained by F. Gode et al They also reported that small variations in grain size of PbS nanoparticles can give rise to significant modifications in the optical and electrical properties of PbS thin films [13]. In most of the cases, as the crystals obtained in the chemically deposited thin films are very small, considering the current interest in nanoparticles, CBD is the excellent technique to deposit nanocrystalline thin films.…”

Section: Introductionmentioning

confidence: 99%

Effect of Molarity on Structural and Optical Properties of Chemically Deposited Nanocrystalline PbS Thin Film

Sarma

Wary

2017

ILCPA

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Abstract. Thin films of PbS were deposited by chemical bath deposition (CBD) method under various molarities using lead acetate as Pb 2+ ion source, thiourea as S 2-ion source and ammonia as complexing agent at a fixed pH value of 9 under bath temperature of 333 K. Four different molarities of PbS thin films were prepared. The as-prepared films were characterized by using X-ray diffraction (XRD), X-ray fluorescence (XRF), EDX, field emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM). Parameters like crystallite size, lattice constant, microstrain, dislocation density were calculated. Optical constants such as extinction coefficient, absorption coefficient were measured from absorption spectra. Studies show that average nanocrystallite size increases from14.2 nm to 18.1 nm as the molarity of the film increases. Optical studies reveal the decrease of band gap from 1.75 eV to 1.44 eV with increasing molarity of the film indicating higher electrical conductivity of the films.

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“…PbS is used in many semiconductor devices such as transistors [3], IR detectors [4], biosensors [5] and solar cells [6], etc. PbS thin films can be obtained by several methods such as electrodeposition [7], solvothermal [2], successive ionic layer adsorption and reaction (SILAR) [8] and chemical bath deposition (CBD) [9], etc. Among them, CBD is an economical and simple technique and enables largescale deposition.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nanocrystalline PbS Thin Films Produced by Chemical Bath Deposition

2015

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Lead sulfide thin films are deposited on glass substrates at room temperature for 2 h by chemical bath deposition. The structure, surface morphology, optical and electrical properties of the thin films are characterized by X-ray diffraction, scanning electron microscopy, atomic force microscopy, optical absorption spectroscopy and the Hall effect measurements. The obtained films show the formation of well crystallized PbS with a cubic rock salt structure and with the preferential orientation (111) plane. The lattice parameter and crystallite size of the films are found as a = 600 Å and 62 nm from the X-ray reflectivity data from the atomic force microscopy image, respectively. The band gap width of the films is determined as 2.84 eV. The optical parameters of the films such as refractive index, extinction coefficient, real and imaginary parts of dielectric constant are evaluated. Moreover, from the Hall measurements, electrical resistivity, conductivity carrier mobility, and carrier concentration of the films are determined as 3.722 Ω m, 0.

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Synthesis, structural, optical, electrical and thermoluminescence properties of chemically deposited PbS thin films

Cited by 86 publications

References 34 publications

Fabrication and Optical Characterization of CdSe Thin Films Grown by Chemical Bath Deposition

Fabrication and Optical Characterization of CdSe Thin Films Grown by Chemical Bath Deposition

Effect of Molarity on Structural and Optical Properties of Chemically Deposited Nanocrystalline PbS Thin Film

Preparation and Characterization of Nanocrystalline PbS Thin Films Produced by Chemical Bath Deposition

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