Fine Structure of the Carbon-Related Blue Luminescence Band in GaN
Photoluminescence studies reveal three C<sub>N</sub>-related luminescence bands in GaN doped with carbon: the YL1 band at 2.17 eV caused by electron transitions via the −/0 level of the C<sub>N</sub>, the BL<sub>C</sub> band at 2.85 eV due to transitions via the 0...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-04-01
|
| Series: | Solids |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-6497/3/2/16 |
| Summary: | Photoluminescence studies reveal three C<sub>N</sub>-related luminescence bands in GaN doped with carbon: the YL1 band at 2.17 eV caused by electron transitions via the −/0 level of the C<sub>N</sub>, the BL<sub>C</sub> band at 2.85 eV due to transitions via the 0/+ level of the C<sub>N</sub> and the BL2 band at 3.0 eV attributed to the C<sub>N</sub>H<sub>i</sub> complex. The BL<sub>C</sub> band studied here has the zero-phonon line at 3.17 eV and a phonon-related fine structure at low temperatures. The 0/+ level of the C<sub>N</sub> is found at 0.33 ± 0.01 eV above the valence band, in agreement with recent theoretical predictions. These results will help to choose an optimal correction scheme in hybrid functional calculations. |
|---|---|
| ISSN: | 2673-6497 |