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Showing 1 to 9 of 9 for “"hydrogen-passivated"”.
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Scanning tunneling microscopy and spectroscopy of wet chemically synthesized porous graphene nanoribbons on hydrogen passivated silicon (100)
… graphene nanoribbons (GNRs) exfoliated onto hydrogen passivated silicon H:Si(100) substrates using a dry contact transfer (DCT) method under ultrahigh-vacuum (UHV) conditions. The porous GNRs are characterized in UHV using scanning tunneling microscopy (STM) and scanning tunneling …
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Electronic and Optical Properties of Silicon Based Semiconductors With Reduced Dimension: A Theoretical Study
… surface, phosphorus delta-doped silicon, and Hydrogen passivated silicon clusters. To study the systems efficiently, we have developed planar Wannier formula with envelope functions, and GWA formula in symmetrized plane-wave basis. The formulas are successfully applied to the studied …
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Planar Orbital Method for Surface Electronic Structures
… 2 x 1 surfaces with symmetric dimers, and the hydrogen-passivated Si(001) 2 x 1 surface, as well as the reflectance-difference spectra of Si(001) 2 x 1 and 2 x 2 surfaces. The calculating work function of Si(001) 2 x 1 surface supports the buckled dimer model. For the As/Si(001) surface, we …
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Scanning tunneling microscopy investigations of transition metal dichalcogenide 1t-tantalum disulfide and zigzag-shape graphene nanoribbons in ultra-high vacuum
… zigzag-shape graphene nanoribbons (GNRs) on hydrogen passivated silicon substrate through scanning tunneling microscopy (STM). Dry contact transfer allows unperturbed transfer and exfoliation of desired two-dimensional (2D) layered materials onto a desired substrate under ultra-high vacuum …
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Low Temperature Selective Silicon Epitaxy at the Nanometer Scale
… scale, selective silicon epitaxy using the hydrogen-passivated silicon surface as a lithographic mask has been developed. The STM tip is used to define chemically reactive templates on the monohydride Si(100) surface at temperatures below the monohydride desorption peak, 540 °C. Disilane …
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Scanning Tunneling Microscopy and Spectroscopy of Carbon Nanotubes Interfaced With Silicon Surfaces
… to examine SWNTs directly interfaced with the hydrogen-passivated Si(100) surface. An approach termed dry contact transfer (DCT) was developed for the UHV deposition of SWNTs with minimal disruption of the atomically flat Si(100)-2x1:H surface. Isolated, rather than bundled, SWNTs could be …
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Optical Response Of Finite And Extended Systems
… proceeded by calculating the optical response of hydrogen-passivated Si and Ge nanoclusters which exhibit many interesting properties and have many promising applications. Our method is non-perturbative and in principle we can get the non-linear optical response. Along these lines we developed a …
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Surface transfer doping of diamond for power electronics
… make up bulk diamond. In this work, we utilize hydrogen-passivated diamond surface along with surface acceptors to generate a highly conductive 2D hole sheet at the surface with carrier densities going up to 10¹⁴ cm⁻². Surface transfer doping using stable high electron affinity transition-metal …
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Interfacial Electrochemistry and Surface Characterization: Hydrogen Terminated Silicon, Electrolessly Deposited Palladium & Platinum on Pyrolyzed Photoresist Films and Electrodeposited Copper on Iridium
Hydrogen terminated silicon surfaces play an important role in the integrated circuit (IC) industry. Ultra-pure water is extensively used for the cleaning and surface preparation of silicon surfaces. This work studies the effects of ultra-pure water on hydrogen passivated silicon surfaces in a …