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A new organo-tin complex has been synthesized and used as a single source precursor for the synthesis of SnSe nanosheets by the hot injection method and thin films by the aerosol assisted chemical vapor deposition (AACVD) method. The films were deposited on glass substrates at three different temperatures. The textural quality and preferential growth were found to be significantly altered by changes in the deposition temperature. Oleylamine capped nanosheets and the as-deposited thin films by AACVD were characterized by powder X-ray diffraction (p-XRD) and microscopic techniques. The thin films were also studied by Raman spectroscopy. The stoichiometry is marginally affected by temperature, and all films were slightly selenium deficient. The synthesized material was also evaluated for the photoelectrochemical (PEC) splitting of water. The PEC study revealed the bifunctional nature of the material, which can be applied for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), by switching the applied potential. [ABSTRACT FROM AUTHOR]

New complexes with the general formula [M(S2CNn Bu2)2 ] [where M = CdII (1) and ZnII (2)] were synthesized and used as single source precursors to deposit thin films of cadmium sulfide and zinc sulfide by the aerosol-assisted chemical vapor deposition technique. The single crystal X-ray structures of 1 and 2 are also reported. Ther mogravimetric analysis of 1 and 2 showed that both precursors decompose cleanly in a single step to produce their respective metal sulfides. The deposition of thin films was carried out on soda glass substrates in the 350{450 ° C temperature range under inert conditions. The as-deposited thin films were characterized by powdered X-ray diraction and field emission scanning electron microscopy. Thin films of CdS deposited at low temperature (350 ° C) consist of densely packed granular crystallites with an average size of ca. 150 nm, while at higher temperatures (400 and 450 ° C) particles with varying sizes and mixed morphologies are observed. The ZnS thin films deposited at 400 ° C showed rod-like structures, whereas dense globular-like structures were obtained at 450 ° C. Energy dispersive X-ray analysis was performed to study the chemical composition of the thin films. [ABSTRACT FROM AUTHOR]

In this work, we report the results of deposition of PbS thin films using single molecular precursor, bis ( O -isobutylxanthato)lead(II), in the presence of additives namely: sodium dodecyl sulfate (SDS), Tween and Triton x-100, via aerosol assisted chemical vapor deposition (AACVD). The as-deposited PbS thin films are highly crystalline and exhibited superior adhesion to glass substrates. Powder X-ray diffraction (XRD) analysis confirmed the formation of pure cubic phase of PbS. Thin films deposited using 0.4 mM Triton X-100 as additive resulted in wire like structures while 0.8 mM Triton X-100 deposited thin films comprised of predominantly shoe shaped structures. Further, increase in concentration (1.2 mM) of Triton X-100 deposited films having rod like morphology. The scanning electron microscopy (SEM) confirmed that in the presence of SDS, thin films consist of spherical shaped crystallites. Energy dispersive X-ray spectroscopy (EDX) and X-ray photon electron microscopy (XPS) of as-deposited PbS thin films was used to study chemical composition of thin films. [ABSTRACT FROM AUTHOR]

This article presents the synthesis and characterization (multinuclear nuclear magnetic resonance, Fourier transform infrared spectroscopy, carbon–hydrogen–nitrogen–sulfur analyzer, atomic absorption spectrometry and thermogravimetric analysis) of a single source organometallic precursor namely 1-acetyl-3-(4-ferrocenylphenyl)selenourea for the fabrication of iron selenide (FeSe) films on glass substrates using aerosol assisted chemical vapor deposition (AACVD). The changes in the morphologies of the films have been monitored by the use of two different surfactants i.e. triton X-100 and tetraoctylphosphonium bromide during AACVD. The role of surfactant has been evaluated by examining the interaction of the surfactants with the precursor by using UV–vis spectroscopy and cyclic voltammetry. The fabricated FeSe films have been characterized with powder X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. [ABSTRACT FROM AUTHOR]

Abstract: We report the synthesis and single X-ray structures of bis(dipiperidinyldithio-carbamato)zinc(II) and bis(ditetrahydroquinolinyldithiocarbamato)zinc(II) complexes. The complexes were thermolysed in hexadecylamine (HDA) and tri-n-octylphosphine oxide (TOPO) at different reaction temperatures to produce HDA and TOPO capped ZnS nanoparticles. The microstructure and morphology of the as-prepared ZnS nanoparticles were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and high transmission electron microscopy (HRTEM). Predominantly close to spherical shaped particles were observed in the TEM images of all samples. The optical properties of the particles studied by UV–Vis and photoluminescence (PL) spectroscopy showed evidence of quantum confinement. [Copyright &y& Elsevier]