Figure 2
From: Incident wavelength and polarization dependence of spectral shifts in β-Ga2O3 UV photoluminescence
Polarization dependence of photoluminescence. (a) PL spectra for the nominally 0.15% Mg-doped sample at 266 nm and its fitting to four Gaussian peaks corresponding to UV, UV’, blue, and green emission. (b) Evolution of PL peak positions with excitation polarization angle at 266 nm (polarization 0° is parallel to c-axis) (c) PL spectra for the nominally 0.15% Mg-doped sample at 240 nm and its fitting to four Gaussian peaks corresponding to UV, UV’, blue, and green emission. (d) Evolution of PL peak positions with excitation polarization angle at 240 nm.
