Accession Number : ADA288567

Title :   Diamond Atomic Layer Epitaxy.

Descriptive Note : Quarterly rept. 1 Jul-1 Oct 94,

Corporate Author : S I DIAMOND TECHNOLOGY INC HOUSTON TX

Personal Author(s) : Hammond, Mark ; Jamison, Keith

PDF Url : ADA288567

Report Date : 06 OCT 1994

Pagination or Media Count : 8

Abstract : Work during the current reporting period has focused on the following items: (1) Auger and ELS of deposition with methyl bromide on diamond. (2) Studies of methyl bromide and ethylene reaction with silicon (100) and (111). (3) Further studies of hydrogen on diamond(100) and surface reconstructions. (4) Set-up and testing of load-lock chamber for hot filament CVD. Auger and ELS analysis was performed on a diamond(100) sample on which carbon was deposited with cracked methyl bromide. This analysis was carried out ex situ with a JEOL Auger microprobe which was recently acquired by SI Diamond Technology. Mask lines from the tantalum straps which were used to mount the crystal on the sample holder are apparent in electron microscope images of the sample. The carbon KLL Auger signal from the sample at about 272 eV is observed to have the lineshape which is characteristic of carbon in diamond (as opposed to graphitic) form. In addition, the pipi* plasmon which has been observed at approximately 6.5 eV energy loss for graphitic carbon is not observed in electron energy loss spectroscopy (ELS) of this sample which was performed at 350 eV beam energy. Both of these results point to deposition of carbon in diamond form .

Descriptors :   *METHYL RADICALS, *DIAMONDS, *ETHYLENE, *AUGER ELECTRON SPECTROSCOPY, *BROMIDES, * DEPOSITION, LAYERS, CRACKS, ELECTRON MICROSCOPES, CHEMICAL VAPOR DEPOSITION, EPITAXIAL GROWTH, GRAPHITE, CARBON, ETCHING, HYDROGEN, ELECTRON ENERGY, SURFACE PROPERTIES, RESPONSE, SILICON, IMAGES, STRAPS, LOSSES, FILAMENTS, ELECTRON SPECTROSCOPY, MICROPROBES, PLASMONS, TANTALUM, ATOMIC PROPERTIES.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Physical Chemistry
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE