Surface properties of nanodiamond films deposited by electrophoresis on Si(100)

Maillard-Schaller, E.; Kuettel, O.M.; Diederich, L.; Schlapbach, L.; Zhirnov, V.V.; Belobrov, P. I.

doi:10.1016/s0925-9635(98)00381-1

Cited by 45 publications

(14 citation statements)

References 14 publications

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“…The broadening of the D peak can be attributed to the phonon confinement effect due to the small grain size of UNCD (∼5 nm). 42 The highly optically absorbing sp 2 -bonded carbon precludes observation of the sp 3 Raman signal since the visible Raman is about 50−250 times more sensitive to sp 2 -bonded carbon than to the sp 3 -bonded carbon. 43 The band around 1600 cm −1 corresponds to sp 2 - hybridized carbon indicating the presence of graphitic carbon accumulated at the grain boundaries.…”

Section: Resultsmentioning

confidence: 99%

Ultrananocrystalline Diamond-Decorated Silicon Nanowire Field Emitters

Palomino

Varshney

Resto³

et al. 2014

ACS Appl. Mater. Interfaces

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Silicon nanowires (SiNWs) were uniformly decorated with ultrananocrystalline diamond (UNCD) by a novel route using paraffin wax as the seeding source, which is more efficient in the creation of diamond nuclei than traditional methods. These one-dimensional ultrananocrystalline diamond-decorated SiNWs (UNCD/SiNWs) exhibit uniform diameters ranging from 100 to 200 nm with a bulbous catalytic tip of ∼250 nm in diameter and an UNCD grain size of ∼5 nm. UNCD/SiNW nanostructures demonstrated enhanced electron field emission (EFE) properties with a turn-on field of about 3.7 V/μm. Current densities around 2 mA/cm(2) were achieved at 25 V/μm, which is significantly enhanced as compared to bare SiNWs.

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Section: Resultsmentioning

confidence: 99%

Ultrananocrystalline Diamond-Decorated Silicon Nanowire Field Emitters

Palomino

Varshney

Resto³

et al. 2014

ACS Appl. Mater. Interfaces

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“…For instance, Iakoubovskii et al found by electron spin resonance (ESR) that the absence of nitrogen as single substitutional centers (P1 centers) suggests that nitrogen does not incorporate into the nanodiamond grains, on the contrary to Baranov et al, who revealed by the same technique the presence of individual N0 centers in sintered detonation nanodiamonds . Maillard-Schaller et al showed by X-ray photoelectron spectroscopy measurements that the nitrogen content in detonation nanodiamond films is around 1−2 wt %, but they could not determine whether it was at the surface or within the nanodiamond core . On the other hand, Mikov et al, using two-photon-excited luminescence, revealed that various nitrogen defects could be found within the nanodiamond grains but could not provide any quantification of the amount of nitrogen .…”

Section: Introductionmentioning

confidence: 99%

High Nitrogen Doping of Detonation Nanodiamonds

et al. 2010

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The main goal of doping detonation nanodiamonds with nitrogen is to obtain stable photoluminescence properties. Small quantities of nitrogen have already been evidenced in such nanodiamonds. This article deals with the possibility of increasing the nitrogen content inside nanodiamond samples. Electron energy loss spectroscopy is a very useful tool for determining the location and the quantity of nitrogen within individual nanodiamonds. The experimental results demonstrate that the nitrogen content strongly depends on the precursors used in the composition of the explosive charge: the incorporation of melamine leads to an increase by a factor 2 or 3 in the nitrogen content in the nanodiamond core. To the best of our knowledge, this is the first time that such high nitrogen contents have been obtained for detonation nanodiamonds. It is also shown that nitrogen is always present inside the nanodiamond core in an sp3 hybridization configuration.

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“…In oxidized NDs, the presence of oxygen increases the surface barrier, thus shifting the electron emission at a higher potential. In [215], the authors used XPS and UPS to characterize the NDs. The C 1s peak indicates that NDs possess n-type doping behavior.…”

Section: Surface Chemistry and Properties Of Nanodiamondsmentioning

confidence: 99%

Characterization of Carbon Nanostructures by Photoelectron Spectroscopies

Speranza

2022

Materials

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Recently, the scientific community experienced two revolutionary events. The first was the synthesis of single-layer graphene, which boosted research in many different areas. The second was the advent of quantum technologies with the promise to become pervasive in several aspects of everyday life. In this respect, diamonds and nanodiamonds are among the most promising materials to develop quantum devices. Graphene and nanodiamonds can be coupled with other carbon nanostructures to enhance specific properties or be properly functionalized to tune their quantum response. This contribution briefly explores photoelectron spectroscopies and, in particular, X-ray photoelectron spectroscopy (XPS) and then turns to the present applications of this technique for characterizing carbon nanomaterials. XPS is a qualitative and quantitative chemical analysis technique. It is surface-sensitive due to its limited sampling depth, which confines the analysis only to the outer few top-layers of the material surface. This enables researchers to understand the surface composition of the sample and how the chemistry influences its interaction with the environment. Although the chemical analysis remains the main information provided by XPS, modern instruments couple this information with spatial resolution and mapping or with the possibility to analyze the material in operando conditions at nearly atmospheric pressures. Examples of the application of photoelectron spectroscopies to the characterization of carbon nanostructures will be reviewed to present the potentialities of these techniques.

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Surface properties of nanodiamond films deposited by electrophoresis on Si(100)

Cited by 45 publications

References 14 publications

Ultrananocrystalline Diamond-Decorated Silicon Nanowire Field Emitters

Ultrananocrystalline Diamond-Decorated Silicon Nanowire Field Emitters

High Nitrogen Doping of Detonation Nanodiamonds

Characterization of Carbon Nanostructures by Photoelectron Spectroscopies

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