Smooth germanium nanowires prepared by a hydrothermal deposition process

Pei, Lizhai; Zhao, Hongyu; Tan, Wei; Yu, Hang; Chen, Y.W.; Fan, Chuangang; Zhang, Qian‐Feng

doi:10.1016/j.matchar.2009.05.003

Cited by 8 publications

(2 citation statements)

References 32 publications

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“…Figure 5 shows the Raman spectra of deposits at two frequency regions. In the low frequency region, a sharp band was observed at 296 cm −1 and assigned to a Ge-Ge stretching mode (optical phonon) [21] [22]. This band exhibited a tailing towards a lower frequency, indicating the probable presence of amorphous Ge materials [21] such as Ge NPs as by-products.…”

Section: Resultsmentioning

confidence: 99%

Formation of Germanium-Carbon Core-Shell Nanowires by Laser Vaporization in High-Pressure Ar Gas without the Addition of Other Metal Catalysts

Hatano¹,

Asano²,

Kameda³

et al. 2017

MSA

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Germanium (Ge)-carbon (C) core-shell nanowires (NWs), 15 -80 nm thick and <1 µm long, were grown using continuous-wave laser vaporization of Ge-graphite composite targets in high pressure (0.1 -0.9 MPa) Ar gas. The NW core was crystalline Ge and the shell was amorphous C. The fraction of the NWs in deposits was changed significantly by the Ge content in the targets and had a maximum at the Ge content of 40 atomic %. With increasing Ar pressure, thicker NWs were grown. A strong correlation was evident between the two diameters of the NW and nanoparticle (NP) attached with the tip of the NW. The growth of the NWs can be explained by the formation of Ge-C liquid-like molten NPs having a specific range of size and composition and precipitation of Ge and C followed by phase separation.

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Section: Resultsmentioning

confidence: 99%

Formation of Germanium-Carbon Core-Shell Nanowires by Laser Vaporization in High-Pressure Ar Gas without the Addition of Other Metal Catalysts

Hatano¹,

Asano²,

Kameda³

et al. 2017

MSA

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show abstract

“…The technique is very flexible and offers a unique scenario to preparing high-quality Ge nanowires at relatively lower temperatures using a simple and cost-effective process [ 168 ]. Another advantage is the use of a non-toxic and eco-friendly solvent, H 2 O, in contrast with the other solution-based techniques [ 169 , 170 ]. Hydrothermal techniques have brought excellent results in the self-seeded growth of Ge nanowires.…”

Section: Self-seeded Germanium Nanowire Synthesis Methodsmentioning

confidence: 99%

A Review of Self-Seeded Germanium Nanowires: Synthesis, Growth Mechanisms and Potential Applications

2021

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Ge nanowires are playing a big role in the development of new functional microelectronic modules, such as gate-all-around field-effect transistor devices, on-chip lasers and photodetectors. The widely used three-phase bottom-up growth method utilising a foreign catalyst metal or metalloid is by far the most popular for Ge nanowire growth. However, to fully utilise the potential of Ge nanowires, it is important to explore and understand alternative and functional growth paradigms such as self-seeded nanowire growth, where nanowire growth is usually directed by the in situ-formed catalysts of the growth material, i.e., Ge in this case. Additionally, it is important to understand how the self-seeded nanowires can benefit the device application of nanomaterials as the additional metal seeding can influence electron and phonon transport, and the electronic band structure in the nanomaterials. Here, we review recent advances in the growth and application of self-seeded Ge and Ge-based binary alloy (GeSn) nanowires. Different fabrication methods for growing self-seeded Ge nanowires are delineated and correlated with metal seeded growth. This review also highlights the requirement and advantage of self-seeded growth approach for Ge nanomaterials in the potential applications in energy storage and nanoelectronic devices.

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Hydrothermal synthesis and characterization of silica nanowires using rice husk ash: an agricultural waste

Bathla

Narula

Chauhan

2018

J Mater Sci: Mater Electron

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Smooth germanium nanowires prepared by a hydrothermal deposition process

Cited by 8 publications

References 32 publications

Formation of Germanium-Carbon Core-Shell Nanowires by Laser Vaporization in High-Pressure Ar Gas without the Addition of Other Metal Catalysts

Formation of Germanium-Carbon Core-Shell Nanowires by Laser Vaporization in High-Pressure Ar Gas without the Addition of Other Metal Catalysts

A Review of Self-Seeded Germanium Nanowires: Synthesis, Growth Mechanisms and Potential Applications

Hydrothermal synthesis and characterization of silica nanowires using rice husk ash: an agricultural waste

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