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Saah SA, Boadi NO, Awudza JA. Facile synthesis of PbS, Bi2S3 and Bi-doped PbS nanoparticles from metal piperidine dithiocarbamates complexes. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Iram S, Mahmood A, Ehsan MF, Mumtaz A, Sohail M, Sitara E, Mushtaq S, Malik MA, Fatima SA, Shaheen R, Ahmad NM, Malik SN. Impedance Spectroscopy Analysis of PbSe Nanostructures Deposited by Aerosol Assisted Chemical Vapor Deposition Approach. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:2817. [PMID: 34835581 PMCID: PMC8622599 DOI: 10.3390/nano11112817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/20/2021] [Accepted: 08/21/2021] [Indexed: 11/17/2022]
Abstract
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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Affiliation(s)
- Sadia Iram
- School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan; (S.I.); (M.F.E.); (A.M.); (M.S.); (E.S.); (S.M.)
- Department of Materials, University of Manchester, Manchester M13 9PL, UK;
| | - Azhar Mahmood
- School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan; (S.I.); (M.F.E.); (A.M.); (M.S.); (E.S.); (S.M.)
| | - Muhammad Fahad Ehsan
- School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan; (S.I.); (M.F.E.); (A.M.); (M.S.); (E.S.); (S.M.)
| | - Asad Mumtaz
- School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan; (S.I.); (M.F.E.); (A.M.); (M.S.); (E.S.); (S.M.)
| | - Manzar Sohail
- School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan; (S.I.); (M.F.E.); (A.M.); (M.S.); (E.S.); (S.M.)
| | - Effat Sitara
- School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan; (S.I.); (M.F.E.); (A.M.); (M.S.); (E.S.); (S.M.)
| | - Shehla Mushtaq
- School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan; (S.I.); (M.F.E.); (A.M.); (M.S.); (E.S.); (S.M.)
| | | | - Syeda Arooj Fatima
- Central Diagnostic Laboratory, Physics Division, PINSTECH, P.O. Nilore., Islamabad 45500, Pakistan; (S.A.F.); (R.S.)
| | - Rubina Shaheen
- Central Diagnostic Laboratory, Physics Division, PINSTECH, P.O. Nilore., Islamabad 45500, Pakistan; (S.A.F.); (R.S.)
| | - Nasir Mahmood Ahmad
- Department of Materials Engineering, School of Chemical and Materials Engineering (SCME)-National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan; (N.M.A.); (S.N.M.)
| | - Sajid Nawaz Malik
- Department of Materials Engineering, School of Chemical and Materials Engineering (SCME)-National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan; (N.M.A.); (S.N.M.)
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