Synthesis and IR-excited luminescence of (Y1 − x Tm x )2O2S solid solutions

Synthesis and luminescent properties of (RE0.95Ln0.05)2O2S (RE = La, Y; Ln = Ho, Tm)

“…The main features of the luminescence spectra and kinetics of (Y 1-x Tm x ) 2 O 2 S solid solutions in the range 400-2000 nm under laser excitation at 790 and 810 nm were studied. respectively [22]. The compound La 2 O 2 S:Tm 3+ was studied in [23]; luminescence excitation at a wavelength above 355 nm occurs mainly due to energy transfer from the host, which absorbs the exciting radiation, to the Tm 3+ ion.…”