The In Situ Observation of Epitaxial Diamond Thin Film Nucleation and Growth Using Emission Electron Microscopy.
Semiannual technical rept. 1 Jan-30 Jun 94,
OHIO UNIV ATHENS DEPT OF PHYSICS
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A variety of natural and chemical vapor deposited diamond surfaces have been imaged using a photoelectron emission microscope and synchrotron radiation in the 4-18 eV and 250-350 eV range. Both images and spatially resolved total electron yield curves were acquired simultaneously. Near-edge spectra at the carbon is edge show a resonance due to graphite the image intensity varies uniformly in proportion to the C 1s edge intensity. In the 4-18 eV range, no sharp features related to a photoemission threshold were observed below 7 eV in the electron yield curves on any of the specimens. The image contrast was not strongly dependant on the illumination energy. Natural type IIa diamond showed severe charging effects. jg
- Inorganic Chemistry
- Physical Chemistry
- Solid State Physics