Doping nanodiamond

NBTC NC ND Nd YAG ndc NDR NEST NEXAFS Nanobiotechnology Center (Cornell University) nanocrystal nanodiamond neodymium-doped yttrium aluminium garnet (laser) 2,6-naphthalenedicarboxylate 2-nitro-jV-methyl-4-diazonium-formaldehyde resin New and Emerging Science and Technology near-edge x-ray absorption fine structure (spectroscopy)... 

Further defects include, for example, the directed doping with boron, nitrogen or nickel. These confer certain electronic or optical properties to the nanodiamond particles (Section 6.2.3). Experimental as well as theoretical results show that only few elements Hke boron, nitrogen, silicon, oxygen, or phosphorus can be incorpo-... 

Figure 5.28 Current-voltage characteristic of field emission from a nanodiamond particle on a silicon substrate doped with nitrogen. The turn-on field intensity (attainment of a 0.1 iA current) is 3.2Vpm", and at 5Vpm" a current density of about 95 mAcm" is attained ( Elsevier 2000).

The physical properties of diamond films largely correspond to those of the macroscopic material. The only significant differences to bulk diamond arise from surface defects and from a possible doping. The spectroscopic properties are employed to characterize the diamond films obtained, to evaluate their quality and, where applicable, to identify defects and impurities. In the following, the main attention will be directed just to those features differing from the bulk properties of diamond. Further aspects are also discussed in Section 5.4 on the physical properties of nanodiamond that shares some characteristics with the so-called ultrananocrystalline diamond in particular. 

M. Comet, V. Pichot, B. Siegert, F. Britz, and D. Spitzer, Detonation nanodiamonds for doping Kevlar, Journal of Nanoscience and Nanotechnology, 10 (7), 4286-4292, 2010. 

To increase the surface area of conductive diamond supports, a technique called vacuum annealing is utilized in place of doping that anneals un-doped nanocrystalline diamonds to make a conductive diamond. These diamonds, also termed nanodiamonds, are advantageous as catalyst supports because they have high surface areas created by the crevices and surface boundaries between the nanocrystallites. These surface defects acting in favor of platinum deposition however cripple the stability of the material compared to pure diamond. 

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