Effects of surface passivation by hydrogen on the structural and electronic properties of a germanium nanowire: A sp3 tight binding study

Dass, Devi

doi:10.1016/j.apsusc.2019.05.230

Cited by 10 publications

(2 citation statements)

References 119 publications

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“…The termination of the surface atoms − can also have an impact to the electronic structure of the material. Legesse et al investigated the shift in band-gap energy for Ge nanowires with a diameter of 1–2 nm and found out that depending on the dangling bond termination (−H, −NH 2 , and −OH), the band-gap energy can change by up to 1.5 eV.…”

Section: Resultsmentioning

confidence: 99%

Spectroscopic Properties of Semiconductor Nanoparticles near the Solid-to-Liquid Phase Transition

2023

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Gas-phase synthesis of semiconductor nanoparticles is often supported by optical in situ measurements to determine the particle size, phase, and volume fraction. These attributes are connected to the optical properties of these particles, which depend strongly on the temperature and particle size as well as the phase transition near the melting point. To support such measurements, we derive a Lorentz-oscillator model for solid silicon and germanium with temperature- and particle-size-dependent transition energies, line widths, and oscillator strengths. The model yields the complex dielectric function that is then processed using Mie theory to calculate size-dependent absorption and scattering cross-sections for nanoparticles as well as nanoparticle aerosols.

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Section: Resultsmentioning

confidence: 99%

Spectroscopic Properties of Semiconductor Nanoparticles near the Solid-to-Liquid Phase Transition

2023

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“…As a kind of strategic dispersed metal, germanium is widely used in national defense, communications, electronics, aerospace, solar cells, medicine, metallurgy, semiconductors, and other fields [1][2][3][4][5]. Germanium is one of the key materials supporting the development of modern high technology; the European Union and the United States, among other developed countries, have attached great importance to the development and utilization of germanium resources by classifying germanium as a key mineral catalog in 2017 and 2018, respectively.…”

Section: Introductionmentioning

confidence: 99%

The States and Properties of Germanium in Sulfuric Acid Solution

Song

Liang

et al. 2023

Metals

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In recent years, with the development of science and technology, the strategic position of germanium is becoming more and more important, and the global demand for germanium is also increasing. At present, there is no unified description of the existence form of germanium in solutions. Based on the current mainstream acid leaching process of germanium, this paper studies the existing form and properties of germanium in sulfuric acid solutions. Through the characterization and analysis of Raman, FTIR, and XPS of three concentrations of pure germanium solution, it is clear that germanium mainly exists in the form of H2GeO3 and some Ge4+ in sulfuric acid solution. Through the Tyndall effect and zeta potential, it is determined that H2GeO3 exists in the form of colloid in sulfuric acid solution. With the increase of germanium concentration, H2GeO3 will polymerize in a sulfuric acid solution to form polygermanic acid, and the H2GeO3 colloidal dispersion system becomes more stable. This study clarifies the existing form and properties of germanium in sulfuric acid solution, which is of great significance to the leaching extraction of germanium-containing materials and the development of the germanium industry.

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Study on the mechanism of ultrasonic inhibition of germanium adsorption by Fe(OH)3 in the neutralization leaching section of zinc oxide dust

et al. 2023

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Effects of surface passivation by hydrogen on the structural and electronic properties of a germanium nanowire: A sp3 tight binding study

Cited by 10 publications

References 119 publications

Spectroscopic Properties of Semiconductor Nanoparticles near the Solid-to-Liquid Phase Transition

Spectroscopic Properties of Semiconductor Nanoparticles near the Solid-to-Liquid Phase Transition

The States and Properties of Germanium in Sulfuric Acid Solution

Study on the mechanism of ultrasonic inhibition of germanium adsorption by Fe(OH)3 in the neutralization leaching section of zinc oxide dust

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