Synthesis of a Novel Single-Source Precursor for the Production of Lead Chalcogenide Thin Films

Boadi, Nathaniel Owusu; Saah, Selina Ama; Awudza, Johannes A. M.

doi:10.1155/2020/8349549

Cited by 7 publications

(4 citation statements)

References 32 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%

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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%

“…is may be due to the loss of the [CNHexMe] fragment and some sulphur gases [34]. e decomposition was slow at the first step with a decomposition temperature of 297.92°C.…”

Section: Ermogravimetric Analysismentioning

confidence: 99%

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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“…Single-source precursors minimize the use of pyrophoric and toxic reagents in the synthesis of materials [11,12]. ey are stable in air and moisture [13,14] and o er a cleaner synthesis of nanoparticles and thin lms [15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nickel Sulfide Thin Films and Nanocrystals from the Nickel Ethyl Xanthate Complex

Kotei

Boadi

Saah

et al. 2022

Advances in Materials Science and Engineering

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Nickel sulfides have unique and diverse structural features, making them ideal for energy conversion and storage. This research focuses on the synthesis and characterization of nickel sulfide thin films and nanocrystals from nickel ethyl xanthate complex using spin-coating and solventless methods. The nickel ethyl xanthate complex (C6H10S4NiO2) was characterized using Fourier-transformed infrared (FT-IR), ultraviolet-visible (UV-Vis), and nuclear magnetic resonance (NMR) spectroscopies as well as thermogravimetric analysis (TGA). The NiS thin films and nanoparticles were analyzed with energy dispersive X-ray (EDX) spectroscopy and X-ray diffraction (XRD). Nickel ethyl xanthate was synthesized in an 81.2% yield. The bandgaps of the nickel sulfide obtained from the spin-coating method ranged from 4.35–4.88 eV. For the solventless method, the bandgap of the nickel sulfide ranged from 3.93–3.96 eV. The crystal phase observed from the spin-coating and solventless methods was α-NiS (hexagonal). A direct correlation was observed between annealing temperature, bandgap, and particle size.

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“…However, AACVD also has a disadvantage-solubility of the precursor in a solvent; if the precursor does not give solubility in a suitable solvent, then it is impossible to utilize AACVD to deposit thin films of that precursor [35]. Deposition of lead chalcogenides with different nanostructures was reported using various single-source precursors, including dichalcocarbamates [36,37], dichalcogenoimidophosphinate lead (II) complexes [27], xanthates [38,39], dichalcogenophosphinates [40,41], dichalcogenophosphates [27], N-acyl selenoureas [42], and metalorganodithiophosphinates [43,44].…”

Section: Introductionmentioning

confidence: 99%

Impedance Spectroscopy Analysis of PbSe Nanostructures Deposited by Aerosol Assisted Chemical Vapor Deposition Approach

et al. 2021

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This research endeavor aimed to synthesize the lead (II) diphenyldiselenophosphinate complex and its use to obtain lead selenide nanostructured depositions and further the impedance spectroscopic analysis of these obtained PbSe nanostructures, to determine their roles in the electronics industry. The aerosol-assisted chemical vapor deposition technique was used to provide lead selenide deposition by decomposition of the complex at different temperatures using the glass substrates. The obtained films were revealed to be a pure cubic phase PbSe, as confirmed by X-ray diffraction analysis. SEM and TEM micrographs demonstrated three-dimensionally grown interlocked or aggregated nanocubes of the obtained PbSe. Characteristic dielectric measurements and the impedance spectroscopy analysis at room temperature were executed to evaluate PbSe properties over the frequency range of 100 Hz–5 MHz. The dielectric constant and dielectric loss gave similar trends, along with altering frequency, which was well explained by the Koops theory and Maxwell–Wagner theory. The effective short-range translational carrier hopping gave rise to an overdue remarkable increase in ac conductivity (σac) on the frequency increase. Fitting of a complex impedance plot was carried out with an equivalent circuit model (Rg Cg) (Rgb Qgb Cgb), which proved that grains, as well as grain boundaries, are responsible for the relaxation processes. The asymmetric depressed semicircle with the center lower to the impedance real axis provided a clear explanation of non-Debye dielectric behavior.

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Synthesis of a Novel Single-Source Precursor for the Production of Lead Chalcogenide Thin Films

Cited by 7 publications

References 32 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 of Nickel Sulfide Thin Films and Nanocrystals from the Nickel Ethyl Xanthate Complex

Impedance Spectroscopy Analysis of PbSe Nanostructures Deposited by Aerosol Assisted Chemical Vapor Deposition Approach

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Synthesis of a Novel Single-Source Precursor for the Production of Lead Chalcogenide Thin Films

Cited by 7 publications

References 32 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 of Nickel Sulfide Thin Films and Nanocrystals from the Nickel Ethyl Xanthate Complex

Impedance Spectroscopy Analysis of PbSe Nanostructures Deposited by Aerosol Assisted Chemical Vapor Deposition Approach

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Product

Resources

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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)]