Extraordinary transmission in the ultraviolet band in a (AlxGa1-x)2O3/Al nanopore array

This article uses the finite difference time-domain algorithm to calculate the transmittance of periodic triangular lattice Al nanopore arrays on (AlxGa1-x)2O3 thin film substrates with different Al compositions x and thicknesses, apertures, and periods of Al nanopore arrays. This article uses Origin for data processing, and the dataset includes Cauchy parameters A, B, and C in sequence. The refractive index n (λ) of different Al compositions (AlxGa1-x)2O3 is shown in Figure 2; The transmission spectrum and average transmittance of Al nanopore array/(AlxGa1-x)2O3 thin film with changes in Al composition are shown in Figure 3; The transmission spectrum and average transmittance of Al nanopore array/(AlxGa1-x)2O3 thin film when the aperture changes, as shown in Figure 4; The transmission spectrum and average transmittance of Al nanopore array/(AlxGa1-x) 2O3 thin film with periodic changes are shown in Figure 5; The transmission spectrum and average transmittance of Al nanopore array/(AlxGa1-x) 2O3 thin film with varying thickness are shown in Figure 6; The central wavelengths λ 1 and λ 2 of the two transmission peaks in the ultraviolet band vary with the structural parameters, as shown in Figure 7; The transmittance T1 and T2 at the peak values of the two transmission peaks in the ultraviolet band vary with the structural parameters, as shown in Figure 8. The above data can help us better understand the ultraviolet band extraordinary transmission mechanism in Al nanopore arrays/(AlxGa1-x) 2O3 thin films.