Corrigendum: “Analysis of the optical constants and bandgap energy in Al1−x In x N alloys grown on a c-plane freestanding GaN substrate by using spectroscopic ellipsometry” [Jpn. J. Appl. Phys. 59, 121001 (2020)]

We found an error in the calculation process of the Tauc–Lorentz (T–L) model. Fitting results obtained by the T–L model [Tables I and III, and Figs. 3(a) 3(b), 4(a) 4(b), and 5(a) 5(b)] should be replaced with the following tables and figures. The bandgap energies obtained by the T–L model were slightly increased (4.33 eV for x= 0.12 and 3.95 eV for x= 0.18) from the values in the original paper. Refractive index and extinction coefficient (absorption) spectra obtained by the T–L model were slightly changed. The corrections in the body text of the original paper, including the corrections of typographical errors, are listed in the following table. These corrections do not affect the discussions and conclusions of the original paper.