Figure 3
From: New localized/delocalized emitting state of Eu2+ in orange-emitting hexagonal EuAl2O4
TL excitation spectroscopy measurements of h-EAO.
(a), TL curves of h-EAO monitored at 645 nm emission. The sample was illuminated with 320–540 nm light in 10 nm steps for 10 min at 77 K. The measured temperature varied from 77 to 380 K. (b), TL integrated intensities as a function of excitation wavelengths (red balls). The solid line curve is the PL excitation spectrum of h-EAO monitored at 645 nm emission at 77 K, which is the same as the blue line curve in Fig. 1b.
