Synthesis and structural property of Si nanosheets connected to Si nanowires using MnCl2/Si powder source

Meng, Erchao; Ueki, Akiko; Meng, Xiang; Suzuki, Hiroaki; Itahara, Hiroshi; Tatsuoka, Hirokazu

doi:10.1016/j.apsusc.2016.03.103

Cited by 12 publications

(21 citation statements)

References 42 publications

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“…The principles of chemical and electrochemical methods that have been reported are mainly as follows: (a) topotactic transformation of layered calcium silicide in the presence of hydrochloric acid (or a solution of propylamine hydrochloride) resulting in the formation of siloxene nanosheets; ,− (b) magnesium thermal reduction of SiO 2 nanosheets at high temperature; − (c) oxidant-mediated liquid oxidation and exfoliation of CaSi 2 resulting in the formation of silicene nanosheets (the oxidizing agent including I 2 , CuCl 2 , and SnCl 2 , etc. ); , (d) one-step simultaneous molten salt-induced exfoliation and chemical reduction process for preparing high quality Si nanosheets; , (e) chemical vapor deposition (CVD); , (f) electrochemical lithiation and delithiation of silicon resulting in the formation of few-layer silicene nanosheets and their oxides; , (g) DC arc discharge method to synthesize two-dimensional ultrathin silicon nanosheets …”

Section: Introductionmentioning

confidence: 99%

Silicene Quantum Dots Confined in Few-Layer Siloxene Nanosheets for Blue-Light-Emitting Diodes

Zhou

Ding

et al. 2019

ACS Appl. Nano Mater.

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Two-dimensional silicon-based materials have unique physical and chemical properties due to high surface area and quantum confinement effects. Herein, a topochemical reaction method is used for preparing silicene quantum dots confined in few layer siloxene nanosheets with FeCl 3 •6H 2 O as oxidant, which shows a thickness less than 2 nm. The experimentally prepared siloxene nanosheets are dispersible, with silicene quantum dots having an average diameter less than 5 nm. The silicene quantum dots are self-organized through the oxidation of FeCl 3 , showing unique optical properties of blue emission. The UV−visible absorption and PL emission spectra indicate the quasi-direct band gap transition to the emission. Besides, the few-layer siloxene nanosheets with silicene quantum dots have a radiative lifetime of 1.098 ns at an emission wavelength of 435 nm, which derives from the quasi-direct band transition of silicene quantum dots. Such twodimensional nanosheets of silicon possess potential applications for the emitting layer materials of blue light-emitting diodes (LED).

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Section: Introductionmentioning

confidence: 99%

Silicene Quantum Dots Confined in Few-Layer Siloxene Nanosheets for Blue-Light-Emitting Diodes

Zhou

Ding

et al. 2019

ACS Appl. Nano Mater.

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“…The modification of diffraction conditions owing to the tilt observation for Si nanosheets has been described in detail previously. 30) In addition, the elongation of reciprocal lattice spots led to the appearance of "extra" spots. For example, the elongated streaked 002 spots are perpendicular to the nanosheet surface and intersect the Ewald sphere; thus, these spots are marked by squares in the figure.…”

Section: Resultsmentioning

confidence: 99%

Fine structural and photoluminescence properties of Mg₂Si nanosheet bundles rooted on Si substrates

Koga

Tamaki

Meng

et al. 2021

Jpn. J. Appl. Phys.

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Creating vertically aligned 2D nanostructures is a promising approach to achieving advanced electronic and optoelectronic materials. In this study, Mg2Si nanosheet bundles were synthesized by Ca atom extraction from CaSi2 microwalls grown on Si substrates via thermal annealing in a MgCl2/Mg mixed vapor. The nanosheet bundle structure was modified to compound nanosheet bundles from previously reported Si nanosheet bundles. The observed Mg2Si nanosheets consist of thin Mg2Si layers, and well-defined fine-scale Mg2Si superlattice-like structures were achieved in the nanosheet bundles. In addition, the Raman scattering and photoluminescence properties were examined, and structural and electronic modifications of the nanosheet bundle compared with the bulk crystals were suggested. To obtain tailored properties and functionalities of the nanosheet bundles, structural modification of layered crystals is a useful technique.

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“…Detailed analyses of the nanosheets synthesized using MnCl 2 and Si will be reported elsewhere. 32) Enlarged TEM images of the nanowires grown at 5.8 cm, shown in Fig. 6(f), shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and structural control of silicon and silicide nanowires/microrods using metal chloride sources

Tatsuoka

Suzuki

et al. 2015

Jpn. J. Appl. Phys.

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Si and silicide nanowires/microrods were synthesized using metal-chloride-based sources by the CVD technique. In the case of Si nanowire synthesis, the morphological structures of the products depended on the distance from the source material. The distance dependence of the morphological and structural properties of the nanostructures was investigated to systemically clarify the shape modification phenomena in Si nanowire synthesis. The modification of the cross-sectional shape of the Si nanowires/microrods was successfully demonstrated. The triangular nanowire has a sawtooth faceting structure on its sidewall. In addition, the synthesis of Mn-silicide phases over the entire range of the Mn-Si system was examined. The effect of adding an impurity to the source materials on the structural modifications of the resulting nanowires/microrods was also investigated. It is expected that the morphological and structural control of the nanowires/microrods will be improved by a simple thermal treatment using a metal chloride as the source material.

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Synthesis and structural property of Si nanosheets connected to Si nanowires using MnCl2/Si powder source

Cited by 12 publications

References 42 publications

Silicene Quantum Dots Confined in Few-Layer Siloxene Nanosheets for Blue-Light-Emitting Diodes

Silicene Quantum Dots Confined in Few-Layer Siloxene Nanosheets for Blue-Light-Emitting Diodes

Fine structural and photoluminescence properties of Mg₂Si nanosheet bundles rooted on Si substrates

Synthesis and structural control of silicon and silicide nanowires/microrods using metal chloride sources

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Synthesis and structural property of Si nanosheets connected to Si nanowires using MnCl2/Si powder source

Cited by 12 publications

References 42 publications

Silicene Quantum Dots Confined in Few-Layer Siloxene Nanosheets for Blue-Light-Emitting Diodes

Silicene Quantum Dots Confined in Few-Layer Siloxene Nanosheets for Blue-Light-Emitting Diodes

Fine structural and photoluminescence properties of Mg2Si nanosheet bundles rooted on Si substrates

Synthesis and structural control of silicon and silicide nanowires/microrods using metal chloride sources

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Product

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Fine structural and photoluminescence properties of Mg₂Si nanosheet bundles rooted on Si substrates