Strong excitonic recombination radiation from homoepitaxial diamond thin films at room temperature
- 17 August 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 73 (7) , 981-983
- https://doi.org/10.1063/1.122059
Abstract
We have observed strong emission lines at 5.27 and 5.12 eV at room temperature in cathodoluminescence spectra from homoepitaxial diamond films grown by step-flow mode prepared with microwave plasma assisted chemical vapor deposition. The temperature dependence of integrated intensity of the emission lines indicates that they are attributed to free-exciton recombination radiation associated with a transverse optical phonon and its replica. These results have demonstrated the superior crystalline quality of the homoepitaxial diamond films grown by the step-flow mode.Keywords
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