Nanocrystalline diamond thin boron-doped

Fig. 5 SEM images of (a) a boron-doped microcrystalline and (b) a boron-doped nanocrystalline diamond thin film grown on Si.

FIG. 2. SEM images of boron-doped (A) microcrystalline and (B) nanocrystalline diamond thin films. 

FIG. 6. Carrier concentrations and mobilities (holes) in boron-doped nanocrystalline diamond thin-film electrodes as a function of the B2H6 concentration added to the source gas mixture. The measurements were made in a van der Pauw geometry with Ti contacts by Dr. Toshihiro Ando at NIMS. The limit of the temperature measurements was approximately 500 K. 

Figure 7 shows x-ray diffraction patterns for moderately boron-doped ( 10 cm ) microcrystalline and nanocrystalline diamond thin... 

FIG. 7. X-ray diffraction patterns for a boron-doped (a) microcrystalline and (b) nanocrystalline diamond thin film. 

Figure 8 shows visible-Raman spectra for moderately boron-doped ( — 10 cm ) microcrystalline and nanocrystalline diamond thin films. The spectrum for the microcrystalline film consists of the one-phonon diamond line centered at 1333 cm The line width (FWHM) is ca. 10 cm and, to a first approximation, is inversely related to the phonon lifetime [123,130]. The line position is negligibly shifted from that for a reference... 

Figure 11 shows cyclic voltammetric i-E curves for (A) Fe(CN)e ", (B) Ru(NH3)e (C) IrCl6 / (D) methyl viologen (MV ) in 1 M KCl, and (E) 4-tert-butylcatechol, and (F) Fe in 0.1 M HCIO4 at a boron-doped nanocrystalline diamond thin film electrode. The potential scan rate (v) was 0.1 V/s. The Ep for these redox systems ranges from... 

Cyclic Voltammetric Data for Aqueous-Based Redox Systems at a Boron-Doped Nanocrystalline Diamond Thin-Film Electrode... 

FIG. 16. Differential pulse anodic-stripping voltammetric curves for Ag(I), PB(II), and Cd(II) for a boron-doped nanocrystalline diamond thin-film electrode in 0.1 M acetate buffer, pH 4.5. The metal ion concentrations are (a) 10, (b) 1, and (c) 0.5 pM. Preconcentration at —1000 mV for 3 min (no stirring). (Reprinted with permission from Chem. Mater. 2003, 15, 879. Copyright (2003) American Chemical Society.) (From Ref 115.)... 

FIG. 20. Cyclic voltammetric i-E curves for 1 mM CAD, along with the corresponding background current (dashed line), in a 0.01 M borax buffer, pH 11.2, at (A) a boron-doped nanocrystalline diamond thin-film electrode and (B) a nanocrystaUine diamond thin-film electrode deposited without intentionally... 

Muna, G. W., Tasheva, N. and Swain, G. M. (2004), Electro-oxidation and amperometric detection of chlorinated phenols at boron-doped diamond electrodes A comparison of microcrystalline and nanocrystalline thin films. Environ. Sci. Technol., 38(13) 3674-3682. 

FIG. 23. Transmission spectra for different materials in the (A) UV/Vis and (B) IR regions of the electromagnetic spectrum. The electrodes in (A) are (1) a thin film of ITO on quartz, (2) a thin film of boron-doped nanocrystalline diamond on quartz, (3) a thin film of mechanically polished and boron-doped diamond on an optically pure, white diamond substrate, and (4) a free-standing, boron-doped, and mechanically polished diamond disc. The electrodes in (B) are (5) an optically pure and mechanically polished white diamond disc, (6) an undoped and polished (both sides) Si substrate, and (7 and 8) moderately and heavily boron-doped microcrystalline diamond thin films deposited on the undoped Si. (Reprinted with permission from Interface 2003, 12, 33. Copyright (2003) The Electrochemical Society, Inc.) (From Ref. 158.)... 

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