Abstract
An optical emission phenomenon was observed for pyrolitic boron nitride (PBN) which was excited via bombardments by 1.0 MeV H + and 1.8 MeV He + ions. From blue to near-ultraviolet photons were observed with a continuum spectra from 280 to 600 nm having two broad peaks at 350 and 430 nm. It is suggested that the two broad peaks correspond to luminescence through two different deep recombination centers at 3.6 eV below the conduction band and at 3.0 eV above the valence band. No band-to-band luminescent recombination was observed near 250 nm (∼ 5 eV).
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