Optical anisotropy of ZnO in the ultraviolet region

✍ Scribed by R. Klucker; H. Nelkowski; Y. S. Park; M. Skibowski; T. S. Wagner

• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 332 KB
• Volume: 45
• Category: Article
• ISSN: 0370-1972
• DOI: 10.1002/pssb.2220450130

✦ Synopsis

Abstract

The reflectivity of ZnO single crystals was measured at near normal incidence in the energy region from 3 to 25 eV with linearly polarized light, the electric field vector lying perpendicular and parallel to the c‐axis. From the reflectivity the optical constants n and k, the complex dielectric constant ε = ε~1~ ε i ε~2~ and the energy loss function L = |Im ε^−1^| have been computed by a Kramers‐Kronig analysis for both directions of polarization. The profiles of the spectra differ completely from those of other II–VI compounds of the wurtzite structure. The energetic positions and the polarization dependence of the peaks in the reflectivity and the ε~2~ spectra can be related to the results of the first complete band structure calculation accomplished by Rössler using the Korringa‐Kohn‐Rostocker method.