Effect of ethylene glycol on the growth of hexagonal SnS2 nanoplates and their optical properties

Zhu, Yunqing; Chen, Yiqing; Liu, Lizhu

doi:10.1016/j.jcrysgro.2011.06.031

Cited by 18 publications

(7 citation statements)

References 28 publications

(31 reference statements)

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“…Vapor phase, solution-based and solid-state preparation of crystalline micro- and nanoparticles possessing a shape of hexagonal platelets or hexagonal prisms was reported previously for many metal chalcogenide systems, including d-block (e.g., Ni, Cu or Cd) − and main group metals (e.g., In, Sn or Sb) − as well as multinary systems (e.g., Bi–Sb and Yb–Sb). , In the majority of cases, the growth of anisotropic particles is related with the inherent anisotropy of a crystal structure (e.g., the shape is dictated by the trigonal unit cell) or different reactivity of crystal facets (including the facet-specific adsorption of ligands), while some exceptions are also known. For instance, STEM and SAED examination of solvothermally prepared single crystalline Sb 2 Te 3 hexagonal nanoplatelets and several intermediates (isolated upon process quenching at different reaction times) revealed apparently amorphous intermediate possessing hexagonal shape .…”

Section: Resultsmentioning

confidence: 83%

Luminescent CdSe Superstructures: A Nanocluster Superlattice and a Nanoporous Crystal

et al. 2017

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Superstructures, combining nanoscopic constituents into micrometer-size assemblies, have a great potential for utilization of the size-dependent quantum-confinement properties in multifunctional electronic and optoelectronic devices. Two diverse superstructures of nanoscopic CdSe were prepared using solvothermal conversion of the same cadmium selenophenolate precursor (MeN)[Cd(SePh)]: the first is a superlattice of monodisperse [CdSe(SePh)(dmf)] nanoclusters; the second is a unique porous CdSe crystal. Nanoclusters were crystallized as cubic crystals (≤0.5 mm in size) after solvothermal treatment at 200 °C in DMF. UV-vis absorption and PLE spectra of the reported nanoclusters are consistent with previously established trends for the known families of tetrahedral CdSe frameworks. In contrast to these, results of PL spectra are rather unexpected, as distinct room temperature emission is observed both in solution and in the solid state. The porous CdSe crystals were isolated as red hexagonal prisms (≤70 μm in size) via solvothermal treatment under similar conditions but with the addition of an alkylammonium salt. The presence of a three-dimensional CdSe network having a coherent crystalline structure inside hexagonal prisms was concluded based on powder X-ray diffraction, selected area electron diffraction and electron microscopy imaging. Self-assembly via oriented attachment of crystalline nanoparticles is discussed as the most probable mechanism of formation.

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Section: Resultsmentioning

confidence: 83%

Luminescent CdSe Superstructures: A Nanocluster Superlattice and a Nanoporous Crystal

et al. 2017

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“…19 Stannous chloride and sodium sulphide were rst reacted in EG to obtain smaller SnS particles due to the adsorption of polar EG solvent molecules on their surfaces. 29,30 In the present case, however, the addition of the shape moderator HMDS directs the growth of the particles in an anisotropic way in 1D, leading to a nanorodlike morphology. The high surface area and two-dimensional layered characteristics of these lamellar as-synthesized SnS NRs are advantageous for the intercalation phenomena of alkali metal; therefore, these can be proposed as good energy storage devices due to the high exchange of ions at the interface.…”

Section: Introductionmentioning

confidence: 66%

Synthesis of surfactant-free SnS nanorods by a solvothermal route with better electrochemical properties towards supercapacitor applications

et al. 2015

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“…The presence of additives also influences physical and mechanical properties such as grain size, porosity, brightness, internal stress, pitting, corrosion behaviour and even chemical composition. As an additive material, polyethylene glycol (PEG) considerably enhances the surface morphology and affects the growth dynamic of particle growth as well as it has been used as a binder and pore-forming agent in TiO 2 -based dye synthesized solar cells [28][29][30][31][32][33][34][35]. Rahman et al [26] added 40% PEG by weight in TiO 2 precursor solution and found smooth, crack-free and highly porous film with high cell efficiency.…”

Section: Introductionmentioning

confidence: 99%

Polyethylene glycol-assisted growth of Cu₂SnS₃ promising absorbers for thin film solar cell applications

Kahraman

Çetinkaya

Yaşar

et al. 2014

Philosophical Magazine

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In this paper, we report, for the first time, the results of the polyethylene glycol-(PEG) assisted preparation and characterization of high-quality and well-crystallized Cu 2 SnS 3 (CTS) thin films obtained using sol-gel spin-coating method and a subsequent annealing in a sulphur atmosphere. Structural, morphological, compositional, electrical and optical investigations were carried out. The X-ray diffraction patterns of the samples proved the polycrystalline nature and preferred crystallization of the films. No peak referring to other binary or ternary phases were detected in the patterns. The intensity of the preferred orientation and crystallite size of the films increased with increasing PEG content. This trend yielded an improvement in photo-transient currents of the PEG-assisted growth of CTS films. The scanning electron microscopy images revealed that the CTS films have continuous, dense and agglomeration-like morphology. Through energy dispersive X-ray spectroscopy studies, it has been deduced that the samples consist of Cu, Sn and S of which atomic percentages were consistent with Cu/Sn and S/metal initial ratios. The agglomerated morphology of the samples has been attributed to increasing PEG content. A remarkable enhancement was observed in photo-transient currents of p-n junction of the produced films along with increasing PEG content. Through resistivity-temperature measurements, three impurity level electrical activation energy values for each film were found. Optical band gap values of the films were estimated via absorbance-wavelength behaviours and decreased with increasing PEG content. It has been revealed that PEG-assisted growth of CTS thin films is a promising way to improve its photovoltaic characteristics.

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Effect of ethylene glycol on the growth of hexagonal SnS2 nanoplates and their optical properties

Cited by 18 publications

References 28 publications

Luminescent CdSe Superstructures: A Nanocluster Superlattice and a Nanoporous Crystal

Luminescent CdSe Superstructures: A Nanocluster Superlattice and a Nanoporous Crystal

Synthesis of surfactant-free SnS nanorods by a solvothermal route with better electrochemical properties towards supercapacitor applications

Polyethylene glycol-assisted growth of Cu₂SnS₃ promising absorbers for thin film solar cell applications

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Effect of ethylene glycol on the growth of hexagonal SnS2 nanoplates and their optical properties

Cited by 18 publications

References 28 publications

Luminescent CdSe Superstructures: A Nanocluster Superlattice and a Nanoporous Crystal

Luminescent CdSe Superstructures: A Nanocluster Superlattice and a Nanoporous Crystal

Synthesis of surfactant-free SnS nanorods by a solvothermal route with better electrochemical properties towards supercapacitor applications

Polyethylene glycol-assisted growth of Cu2SnS3 promising absorbers for thin film solar cell applications

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Product

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Polyethylene glycol-assisted growth of Cu₂SnS₃ promising absorbers for thin film solar cell applications