Optical spectroscopy of a-plane-oriented ZnO epilayers grown by plasma-assisted molecular beam epitaxy

Investigation of the Reflectivity Spectrum of the a-Plane Oriented ZnO Epilayers Grown by Plasma-Assisted Molecular Beam Epitaxy from the Gaussian Distribution

“…We will use the Gaussian distribution in the framework of the "bracketing" method [34][35][36][37][38][39][40], to fit the exciton C, which presented a difficulty in certain range of energy because of the oscillator strength related in the ref. [7]. We will compare our results with those obtained in ref.…”

“…In the same way M. Wraback and al [8] as B. Lo and al [7] grew on the r-plane sapphire substrates a ZnO films and investigated the high contrast, ultrafast optically addressed ultraviolet light modulator based upon optical anisotropy in ZnO films. E. V. Lavrov and al [9] worked on ZnO to understand the nature of hydrogen-related shallow donors in ZnO and J. R. Schneck and al [10] for their applications worked on the polar face dependence of the ultrafast U. V reflectivity of ZnO single crystal.…”

“…In the optical properties, B. Lo and al [7] investigated the optical spectroscopy of a-plane oriented ZnO epilayers grown by plasma-assisted molecular beam epitaxy. In the same way M. Wraback and al [8] as B.…”

“…B. Lo and al [7] used the Varshni empirical equation to fit the temperature dependent PL of the A free exciton peak energy measured in the case of the perpendicular polarization (E ⊥ c) and D. W. Hamby used the Manoogian and Wooley model [33] for the temperature dependent exciton PL of bulk ZnO.…”

“…We will compare our results with those obtained in ref. [7,[41][42][43] using other theoretical treatments. In Section 2, Model, we explained the distribution use which will allow us to determine the theoretical reflectivity of the aplane oriented ZnO and the results obtained are well discussed in the section 3.…”