Excitation and absorption spectra of the S2 center in natural diamond crystals

Il'in, V. E.; Yur'eva, P. P.; Sobolev, E. V.

doi:10.1007/bf00611526

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1979

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“…It has five zero-phonon lines A-E at 2,371, 2,537, 2.597, 2.626 and 2-637 eV, the three strongest of which (A, B and 6 ) display phonon replicas. Going from 80 K to 140 K causes B to weaken dramatically, while C and D increase in intensity and A and E stay approximately constant (Il'in et al 1971).…”

Section: 24mentioning

confidence: 99%

Optical absorption and luminescence in diamond

1979

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The optical properties of diamond are important in theoretical solid-state physics, geology, electronics and diamond synthesis.This review outlines some relevant aspects of theoretical physics-molecular orbital and other calculations of the properties of point defects, symmetry and group theory, zero-phonon lines and the configuration coordinate diagram.The experimentally observed spectra can conveniently be divided into infrared ( < 1 eV), which are observed in absorption and are mainly vibrational, and 'visible' (1-5.5 eV), which are vibronic and are observed in both absorption and luminescence.'Visible' spectra include those present naturally, those induced by irradiation, and those induced by irradiation plus annealing.This review covers all the important point defects observed optically in diamond, and includes some results which are not generally available. The relevance of the experimental results to the current controversy about how to calculate the properties of point defects is brought out.

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Section: 24mentioning

confidence: 99%