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Nanostructured Lead Sulphide Depositions by AACVD Technique Using Bis(Isobutyldithiophosphinato)Lead(II) Complex as Single Source Precursor and Its Impedance Study.

Authors :
Iram S
Mahmood A
Sitara E
Batool Bukhari SA
Fatima SA
Shaheen R
Azad Malik M
Source :
Nanomaterials (Basel, Switzerland) [Nanomaterials (Basel)] 2020 Jul 23; Vol. 10 (8). Date of Electronic Publication: 2020 Jul 23.
Publication Year :
2020

Abstract

This communication reports the synthesis of bis(diisobutyldithiophosphinato)lead(II) complex and its subsequent application as a single source precursor for the nanostructured deposition of lead sulphide semiconductors and its impedance to explore its scope in the field of electronics. Synthesized complex was characterized by microelemental analysis, nuclear magnetic resonance spectroscopy, infrared spectroscopy and thermogravimetric analysis. This complex was decomposed using the aerosol-assisted chemical vapour deposition technique at different temperatures to grow PbS nanostructures on glass substrates. These nanostructures were analyzed by XRD, SEM, TEM and EDX methods. Impedance spectroscopic measurements were performed for PbS in the frequency range of 40 to 6 MHz at room temperature. In a complex impedance plane plot, two relaxation processes were exhibited due to grains and grain boundaries contribution. A high value of dielectric constant was observed at low frequencies, which was explained on the basis of Koops phenomenological model and Maxwell-Wagner type polarization. Frequency-dependent AC conductivity results were compliant with Jonscher power law, while capacitance-voltage loop had a butterfly shape. These impedance spectroscopic results have corroborated the ferroelectric nature of the resultant PbS nanodeposition.

Details

Language :
English
ISSN :
2079-4991
Volume :
10
Issue :
8
Database :
MEDLINE
Journal :
Nanomaterials (Basel, Switzerland)
Publication Type :
Academic Journal
Accession number :
32717992
Full Text :
https://doi.org/10.3390/nano10081438