Preparation and photoluminescence properties of LaBMoO6:Dy3+ yellow-emitting phosphor for LEDs

CaAl2Si2O8:Dy3+, Eu3+: synthesis, luminescence properties, energy transfer, and tunable emission

“…Dy 3+ ion has two major characteristic emission peaks in the blue (455–500 nm) and yellow (550–600 nm) regions due to the 4 F 9/2 → 6 H 15/2 and 4 F 9/2 → 6 H 13/2 transitions, respectively. 9 In addition, there are two weak emission peaks in red (620–700 nm) and far-red (720–800 nm) regions owing to the 4 F 9/2 → 6 H 11/2 and 4 F 9/2 → 6 H 9/2 transitions of Dy 3+ , respectively. 10 Dy 3+ ions at a higher symmetry site result in a stronger blue emission band and at low symmetry, the site leads to a stronger yellow emission band in the emission spectrum.…”