The resonance of the Raman scattering by E 2, A 1 T, E 1 L, and E 1 T phonons, and several
second-order features, has been studied for ZnO for photon energies between 1.6 and 3 eV …

We present a Raman scattering study of wurtzite ZnO over a temperature range from 80 to
750 K. Second-order Raman features are interpreted in the light of recent ab initio phonon …

The dispersion of the Raman cross sections of several phonon modes in CdS and ZnO
using a wide range of laser energies has been measured. The E 1 (LO) and multi-LO (2-LO …

Multiphonon scattering has been observed in ZnO by means of uv laser Raman studies.
Phonon-scattering shifts greater than 4000 cm− 1 are observed. Comparisons are made …

and results in an upper and lowerbranch which have mixed electromagnetic and
mechanical nature. The crystal excitations in this mixed region have been called polaritons …

Hall effect measurements on doped, n-type single-crystals of ZnO have yielded: a density-of-
states mass of 0.5m, a shallow donor ionization energy of 0.05 eV, and the temperature …

The exponential absorption edge (known as Urbach's rule) observed in most materials is
interpreted in terms of thermal fluctuations in the band-gap energy. The main contribution to …

One of the key issues of phonon dynamics of nano-and micrometer-scale crystals is the
identification of the observed Raman modes. Due to the tilted orientation of small crystallites …

Polarized-optical-absorption spectra of Co 2+ in ZnO are reported. The crystal-field
transitions from the A 2 4 ground state to the T 2 4 (F), T 1 4(F), and E 2 (G) multiplets are …

A comparison between the ultraviolet-reflectivity spectrum and the characteristic energy-loss
spectrum of ZnO has been carried out. Reflectivity measurements made over an energy …