LUMINESCENCE STUDIES OF NITROGEN-DOPED AND BORON-DOPED DIAMOND FILMS

Low temperature cathodoluminescence and photoluminescence measurements have been used to study radiative recombination processes in chemical vapor-deposited flame-grown diamond films that were nominally undoped , nitrogen- or boron-doped, and nitrogen + boron codoped. The crystall ine qualities of the films were evaluated using the ratios of the inte nsities of the first-order Raman phonons of diamond and amorphous carb on as figures of merit. Steady state and time-resolved photoluminescen ce measurements performed for samples simultaneously doped with nitrog en and boron revealed a broad red emission band, with a maximum at 1.9 5 eV that appears to be nitrogen related.