Heterocyclic lead(II) thioureato complexes as single-source precursors for the aerosol assisted chemical vapour deposition of PbS thin films

Kevin I.Y. Ketchemen, Sixberth Mlowe, Linda D. Nyamen, Ahmed A. Aboud, Matthew P. Akerman, Peter T. Ndifon, Paul O'Brien, Neerish Revaprasadu

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The lead N’-benzoylthioureato complexes of N-morpholine (1) and N-pyrrolidine (2) were synthesized and characterized by elemental analysis, Fourier Transform Infra-Red (FT-IR) spectroscopy, proton nuclear magnetic resonance (1H nmr) and thermogravimetric analyses (TGA). The X-ray single crystal structure of complex (1) was determined. The compounds were both used as single source precursors to deposit PbS films on glass substrates at 350, 400 and 450 °C using aerosol assisted chemical vapour deposition (AACVD) The surface morphology of PbS films were determined by scanning electron microscopy (SEM), the crystalline phases established by powder X-ray diffraction (p-XRD) analyses and composition by energy dispersive X-ray spectroscopy (EDX). The particle sizes were found to range between 82 and 85 nm from complex (1) and 70–105 nm for (2) The PbS films were studied by Near Infra-red (NIR) UV–Vis spectroscopy, band gap ranging from 1.46 to 1.55 eV were observed.

    Original languageEnglish
    Pages (from-to)42-48
    Number of pages7
    JournalInorganica Chimica Acta
    Volume479
    Early online date21 Apr 2018
    DOIs
    Publication statusPublished - 1 Jul 2018

    Keywords

    • AACVD
    • Lead sulfide
    • Optical properties
    • Single source precursors
    • Thin films

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