Dy3+-doped zinc fluorophosphate glasses for white luminescence applications

Photoluminescence characterization and heat treatment effect on luminescence behavior of BaTa2O6:Dy3+ phosphor

“…The Dy 3+ ions are very susceptible to the crystal field changes due to their low symmetry. The emission intensity ratio yellow/blue (Y/B) of electric dipole to magnetic dipole has been used to explain the symmetry of the local environment of the RE 3+ ions . As seen in Table and Figure , the low Y/B ratio (between 0.67 and 0.84) for the BaTa 2 O 6 :Dy 3+ phosphors indicated a lower degree of covalency or interaction between dysprosium and oxygen ions.…”

Synthesis of Sm3+ and Dy3+ doped LaBWO6 for evaluation as potential materials in luminescent display applications

“…167 The critical distance (R c ) from the concentration quenching data 168 can be calculated using the following formula [20] 169 the Dy 3+ ion is located in the low symmetry local site without inver-201 sion center and the blue emission ( 4 F 9/2 ? 6 H 15/2 ) is stronger than 202 yellow one when it is located at a high-symmetry local site with 203 an inversion center [25]. In this work, the intensity of 4 F 9/2 ?…”

Dy3+/Ce3+ Codoped YAG Transparent Ceramics for Single‐Composition Tunable White‐Light Phosphor

“…Compared with the leading commercial WLED technology using a blue chip coated with yttrium aluminum garnet (YAG): Ce 3+ phosphor, UV chip excitation single‐composition phosphors with tunable emission (containing white emission) have the advantages of tunable correlated color temperature (CCT), higher color rendering index, pure Commission International de I'Eclairage (CIE) chromaticity coordinates, etc . For the intense blue and yellow emissions, Dy 3+ has been widely used in UV excitation white‐light luminescent materials . Different from blue light of Dy 3+ ions, yellow emission is strongly influenced by surrounding chemical environment.…”