The optical dielectric functions for polarization perpendicular and parallel to the c-axis (optical axis) of pulsed-laser-deposition grown wurtzite MgxZn1-xO (O≤x≤0.29) thin films was discussed. It was found that the band gap energies showed a remarkable blueshift. The analysis showed that the MgxZn1-xO alloys were found uniaxial negative below the bandgap energy.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)