Table 2
Blue photoluminescence bands, on top of the broad continua (top two entries in italic) in laboratory ta-C:H (a-C:H materials rich in diamond-like or tetrahedral sp3 C atom bonding) at 80 K, excited by 300 nm photons (Panwar et al. 2006) and in the Red RectangleHD 44179 (Vijh et al. 2004, 2005c,b,a).
|
|
||||||
| ta-C:H bands | ta-C:N bands | HD 44179 bands | ||||
| [eV] | [nm] | [eV] | [nm] | [eV] | [nm] | |
|
|
||||||
| Continuum | 2.2–3.7 | 335–564 | 2.2–3.7 | 335–564 | 2.6–3.5 | 350–480 |
| Peak/shoulder | 3.2/– | 390/– | 3.2/– | 390/– | 3.3/3.2 | 375/390 |
| Bands↓ | 3.52–3.54 | 350.2–352.2 | 3.51–3.54 | 350.2–353.2 | – | – |
| – | – | 3.42–3.43 | 361.5–362.5 | – | – | |
| 3.29 | 376.9 | 3.28–3.31 | 374.6–377.5 | 3.28 | 377.5 | |
| Strong | – | – | 3.23–3.24 | 382.7–383.9 | – | – |
| 3.09–3.11 | 389.7–401.2 | 3.08–3.11 | 389.7–402.5 | 3.16 | 392.9 | |
| Weak | 3.01 | 411.0 | – | – | 3.04 | 407.7 |
| Weak | 2.94 | 421.7 | 2.94–2.99 | 414.7–421.7 | 2.93 | 423.7 |
| – | – | 2.80 | 442.8 | 2.83 | 438.8 | |
| – | – | 2.79 | 444.4 | 2.75 | 451.6 | |
| Strong | 2.63–2.64 | 469.6–471.4 | 2.63–2.64 | 469.6–471.4 | 2.67 | 465.2 |
Notes.The most prominent sharp bands in the ta-C:H and ta-C:N laboratory data are marked in boldface.
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