Optical parameters of HfB2 layer extracted using SE by employing Tauc–Lorentz oscillator model.
| Parameters | Value |
|---|---|
| The energy band gap Eg | 0.101 |
| The peak in the joint density of states E0 | 4.526 |
| The high frequency dielectric constant ε∞ | 1.479 |
| The optical transition matrix elements A | 5.260 |
| Broadening factor C | −3.815 |