The effect of deposition time on the structural, morphological and optical band gap of lead selenide thin films synthesized by chemical bath deposition method

Hone, Fekadu Gashaw; Ampong, Francis Kofi; Abza, Tizazu; Nkrumah, Isaac; Paal, Mark; Nkum, R.K.; Boakye, F.

doi:10.1016/j.matlet.2015.04.074

Cited by 47 publications

(9 citation statements)

References 18 publications

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“…e EDAX quantification on the thin films (Figure 6) indicated the formation of PbSe (52%:48%) at all the deposition temperatures. e thin films were lead rich, which is similar to our earlier reports [24,25,34,36,37].…”

Section: Sem Micrographs Of the In Filmssupporting

confidence: 91%

Aerosol‐Assisted Chemical Vapour Deposition of Lead Chalcogenide Thin Films from [Pb((SePⁱPr₂)₂N)(S₂CNHexMe)]

Boadi

Saah

Mensah

et al. 2020

Advances in Materials Science and Engineering

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In this study, [Pb((SePiPr2)2N)(S2CNHexMe)], a novel complex, was synthesised by refluxing [Pb(S2CNHexMe)2] and [Pb((SePiPr2)2N)2] complexes for 2 hours in chloroform and precipitating with methanol. The microelemental analysis, FT-IR, and NMR spectroscopies were performed on the complex and the melting point was determined. The crystal structure of this new compound has been determined. The structure showed a distorted square pyramidal geometry with 2 sulphur and 2 selenium atoms coordinating the central atom at the base of the pyramid and a lone pair occupying the axial position of the lead atom. The complex was used to deposit lead chalcogenide thin films by the aerosol-assisted chemical vapour deposition (AACVD) method at 300, 350, 400, and 450°C. The thin films matched with the powder X-ray diffraction (pXRD) pattern for cubic PbSe with a (200) preferred orientation at all the deposition temperatures. The scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDAX) indicated that cubic PbSe crystals were formed.

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Section: Sem Micrographs Of the In Filmssupporting

confidence: 91%

Aerosol‐Assisted Chemical Vapour Deposition of Lead Chalcogenide Thin Films from [Pb((SePⁱPr₂)₂N)(S₂CNHexMe)]

Boadi

Saah

Mensah

et al. 2020

Advances in Materials Science and Engineering

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“…The main objective of this report is to provide a comprehensive study on the effects of Tb 3+ doping on the structural, optical, morphological and the photoluminescence properties of PbS nanowires using costeffective and eco-friendly chemical bath deposition route. The chemical bath deposition is simple, inexpensive and works at low temperatures [18]. The study of the effects of Tb 3+ concentration on the photoluminescence nature of PbS one-dimensional nanostructures is very limited and will remain a subject of great interest.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of PbS nanowires doped with Tb3+ ions by using chemical bath deposition method

2019

Self Cite

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Crystalline lead sulfide (PbS) nanowires doped with terbium (Tb 3+) ions were synthesized by the chemical bath deposition method at room temperature. The powder was obtained from an aqueous solutions using lead acetate dehydrate, terbium nitrate, thiourea, potassium hydroxide and ammonia. The terbium molar concentrations were varied in the deposition process to investigate the effect on the structural, optical, morphological and luminescent properties of PbS nanowires. The crystalline size was found to be dependent on the concentration of the Tb 3+ ions used. The estimated average crystalline sizes were calculated from the X-ray diffraction and found to be 34, 33 and 37 nm for PbS: 0% Tb 3+ , PbS: 0.2% Tb 3+ and PbS: 0.5% Tb 3+ , respectively. The scanning electron microscopy micrographs depict nanowire shape for the undoped as well as Tb-doped samples. The energy-dispersive X-ray and Auger electron spectroscopy analyses confirmed the presence of all the expected elements. The solid powder nanowires exhibited high absorptions in the UV-Vis regions. The band gap energies were estimated in the range of 1.99-2.46 eV. The absorption edge and the band gap energies of these PbS nanowires have shifted depending on the concentration of the dopant. The maximum luminescence intensity was obtained for PbS: 0.2% Tb 3+ ions and luminescent quenching was observed for higher terbium concentrations.

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“…According to X-ray diffraction analysis (XRD) patterns, they found that the peak intensities and preferred orientations of the crystals were affected by different deposition times. When choosing deposition times of 30 and 60 min, the crystals preferred orientations along the (111) plane, whereas for a deposition time of 40 min, the crystals preferred an orientation along the (200) plane [69].…”

Section: Chemical Bath Depositionmentioning

confidence: 99%

Room-Temperature Infrared Photodetectors with Zero-Dimensional and New Two-Dimensional Materials

Tang

Chen

2022

Coatings

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Infrared photodetectors have received much attention for several decades due to their broad applications in the military, science, and daily life. However, for achieving an ideal signal-to-noise ratio and a very fast response, cooling is necessary in those devices, which makes them bulky and costly. Thus, room-temperature infrared photodetectors have emerged as a hot research direction. Novel low-dimensional materials with their easy fabrication and excellent photoelectronic properties provide a possible solution for room-temperature infrared photodetectors. This review aims to summarize the preparation methods and characterization of several low-dimensional materials (PbS, PbSe and HgTe, new two-dimensional materials) with great concern and the room-temperature infrared photodetectors based on them.

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The effect of deposition time on the structural, morphological and optical band gap of lead selenide thin films synthesized by chemical bath deposition method

Cited by 47 publications

References 18 publications

Aerosol‐Assisted Chemical Vapour Deposition of Lead Chalcogenide Thin Films from [Pb((SePⁱPr₂)₂N)(S₂CNHexMe)]

Aerosol‐Assisted Chemical Vapour Deposition of Lead Chalcogenide Thin Films from [Pb((SePⁱPr₂)₂N)(S₂CNHexMe)]

Synthesis and characterization of PbS nanowires doped with Tb3+ ions by using chemical bath deposition method

Room-Temperature Infrared Photodetectors with Zero-Dimensional and New Two-Dimensional Materials

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The effect of deposition time on the structural, morphological and optical band gap of lead selenide thin films synthesized by chemical bath deposition method

Cited by 47 publications

References 18 publications

Aerosol‐Assisted Chemical Vapour Deposition of Lead Chalcogenide Thin Films from [Pb((SePiPr2)2N)(S2CNHexMe)]

Aerosol‐Assisted Chemical Vapour Deposition of Lead Chalcogenide Thin Films from [Pb((SePiPr2)2N)(S2CNHexMe)]

Synthesis and characterization of PbS nanowires doped with Tb3+ ions by using chemical bath deposition method

Room-Temperature Infrared Photodetectors with Zero-Dimensional and New Two-Dimensional Materials

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Product

Resources

About

Aerosol‐Assisted Chemical Vapour Deposition of Lead Chalcogenide Thin Films from [Pb((SePⁱPr₂)₂N)(S₂CNHexMe)]

Aerosol‐Assisted Chemical Vapour Deposition of Lead Chalcogenide Thin Films from [Pb((SePⁱPr₂)₂N)(S₂CNHexMe)]