Abstract
ABSTRACTThe room temperature cathodoluminescence (CL) of diamond-1ike materials produced by glow discharge is reported. The CL spectra of these samples (4 eV optical gap) display two bands located at 2.3 eV and 2.8 eV which are frequently found in natural and synthetic diamond. X-ray diffraction spectra (before electron bombardment) are identical to those obtained in natural powder diamond, confirming the existence of crystalline particles. The room temperature CL of phosphorous doped samples is also reported.Structural changes in amorphous silicon carbide samples (3.0 eV optical gap) associated with electron bombardnent are presented and elucidated by IR studies.
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