Synthetic diamond: the optical band at 1.883 eV

✍ Scribed by M.H. Nazaré; L.M. Rino

• Book ID: 103954379
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 266 KB
• Volume: 21
• Category: Article
• ISSN: 0921-5107
• DOI: 10.1016/0921-5107(93)90379-2

✦ Synopsis

The 1.883 eV absorption band is the dominant feature in high pressure synthetic diamonds grown using a nickel containing catalyst and without the presence of nitrogen getters. In absorption the optical band extends from 1.883 eV to about 2.2 eV and the dominant features are three sharp lines, with widths typically 2.5 meV, at 1.883 eV, 1.9(15 eV and 1.913 eV. For the first time the band is reported in photoluminescence and the results are consistent with the existence of three excited electronic states. We report on the temperature dependence of the band in absorption and use it to calculate the bandshape and to predict the shift of the lines expected to occur in l)C diamond.