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Article: Research from R.U.A. Khan and co-authors reveals new findings on condensed matter.
- Article from:
- Physics Week
- Article date:
- November 10, 2009
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According to recent research from Maidenhead, the United Kingdom, "We report on the effects of thermal treatment and ultraviolet irradiation on the point defect concentrations and optical absorption profiles of single crystal CVD synthetic diamond. All thermal treatments were below 850 K, which is lower than the growth temperature and unlikely to result in any structural change."
"UV-visible absorption spectroscopy measurements showed that upon thermal treatment (823 K), various broad absorption features diminished: an absorption band at 270 nm (used to deduce neutral single substitutional nitrogen (N-S(0)) concentrations) and also two broad features centred at ...