Anisotropy of the ZnO single crystal reflectivity in the region of residual rays

Abstract

The consistent parameters of hexagonal zinc oxide single crystals are obtained in the frame of the one-oscillator model by analyzing the dispersion spectra of IR light reflection. The anisotropy coefficients of the electron effective masses and the plasmon damping Coefficients are measured. The calculated values of electron mobility and conductivity for zinc oxide are in good agreement with the reference data available. MeTOAOM AEiCIIepCEiOHHOrO aHaSIU3a CIIeKTpOB kfK OTpaXeHEia CBeTa reKCarOHaJIbHbIX MOHOKpHcTan-JIOB OKCUAa UEi HKa IIOJIyWHbI B3aHMOCOrJIaCOBaHHbIe IIapaMeTpbI KpHCTanna B PaMKaX OAHOOCLWJIIIR-TOPHOk MO,I&XU. k'i3MepeHbI K03@@EiUEieHTbI 3@@KTUBHbIX MaCC 3IIeKTpOHOB Ei K03@@EiqEieHTOB 3aTyXaHUR IIna3MOHOB. n0JIyWHHbIe 3HaYeHEiR A n R IIOABUXHOCTH 3JIeKTpOHOB U YJWIbHOk 3JIeKTpO-IKPOBOAHOCTH OKCIlAa WHKa XOPOIIIO COrJlaCyIOTCR C JIIlTepaTypHbIMEi AaHHbIMEi.

Surface polariton excitation in ZnO films deposited using ALD

“…As known, one from the non-destructive research methods for studying the optical and electrophysical properties of thin ZnO films, which allows controlling their quality and structural perfection, is the polariton spectroscopy method [11]. This method gives information not only about the physical and chemical film properties, but also parameters of the substrates and their surface quality.…”

“…The DTIR method content is based on [11,12]: under condition of total internal reflection the ray of IR radiation is able to penetrate from transparent in the IRrange more optical dense medium into less optical dense medium. The depth of penetration is commensurable with the IR-range incident wavelength.…”

“…The structures of air -ZnO film -optical glass were investigated using the method of infrared reflection spectroscopy by us in the works [8,9], and we demonstrated ability of good simulation of reflection coefficient in the range of "residual" rays under usage of bulk mutually agreed parameters for single oscillatory mathematical model that was presented for single crystal of ZnO in [10,11].…”

“…Moreover, the obtained results allowed calculation the spectrum of dielectric permittivity in the whole IR spectrum range and identify gaps with negative permittivity. As is known [11,12] exactly in the frequency range where the permittivity of one from the bordering medium has the negative value, the propagation of surface waves of TM-type is possible along the plane boundary of media. The field amplitude of TM-type waves decrease exponentially along the normal direction from the border separation environment.…”

“…The field amplitude of TM-type waves decrease exponentially along the normal direction from the border separation environment. The corresponding excitation for these waves is called as the surface polaritons (SP) [11,12].…”