Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
702377 | Diamond and Related Materials | 2007 | 5 Pages |
Abstract
Broad-band luminescence centred at ∼ 1.75 eV (∼ 710 nm) is typically encountered in natural brown type Ia diamonds which show evidence of plastic deformation, particularly when using excitation at 514 nm. The band is comprised of 2 broad sub-bands. One of these bands is clearly a vibronic band, and the Huang–Rhys factor and the one-phonon density of states have been determined. The Huang–Rhys factor of S = 8.0 ± 0.5 is relatively high for diamond, and the one-phonon density of states is composed of 2 moderately sharp peaks at 17 and 44 meV.
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Authors
F. De Weerdt, A.T. Collins,