Investigations of polycrystalline chemical vapor deposited diamond films by electron‐spin‐resonance (ESR), light‐induced (L)ESR, and the constant photoconductivity method have identified dispersed substitutional nitrogen (P1 center) as the main paramagnetic form of N incorporated in the CVD diamond. The density of N‐related paramagnetic states is strongly affected by illumination and heat treatment. It is found that the P1 center in CVD diamond gives rise to a deep donor state about 1.5 eV below the conduction band.

Topics
Electron paramagnetic resonance spectroscopy, Optical properties, Photoconductivity, Polycrystalline material, Chemical elements
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1996
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