Refractive Index of β-Ga₂O₃

Phonon- and charged-impurity-assisted indirect free-carrier absorption in Ga2O3

“…We added a small imaginary constant (η = 0.05 eV) to avoid divergences in the denominator of Eqs. (2). This amounts to a Lorentzian broadening.…”

“…Monoclinic β-Ga 2 O 3 is being intensively explored for applications based on its an unusual combination of a large band gap (4.76 eV at low temperatures [1,2]) and high n-type conductivity. The large band gap leads to high breakdown fields, which are desirable for high-power devices [3,4], and enables applications where transparency in the UV is important, such as transparent contacts for photovoltaics and deep-UV photodetectors [5][6][7].…”

Optical properties of gallium oxide thin films

“…Published refractive index data 10 are either restricted to a single spectral position [11][12][13] or have been determined on material with a high density of structural defects. 14 Here we report the linear optical properties of electronbeam deposited and sputtered ␤-Ga 2 O 3 thin films. A multisample analysis of ellipsometric spectra recorded at multiple angles of incidence was performed to extract the optical functions using appropriate layer models.…”

Beta-Gallium Oxide (β-Ga2O3)

“…Single crystals of j3-Ga203 have been grown by the Verneuil technique [8], the chemical transport method [9], and the vapor-phase reaction method [10]. The most extensive optical measurements on relatively large single crystals of/3-Ga203 have been reported by Matsumoto et al [10].…”

“…Matsumoto et al [ 10] determined the refractive indices from the interference fringes produced by the multiple internal reflections in the thin platelets. These are called channel spectra.…”