Optical spectra of yttrium phosphate and yttrium vanadate single crystals activated with Dy3+

Tunable white light emissive Mg2SiO4:Dy3+ nanophosphor: Its photoluminescence, Judd–Ofelt and photocatalytic studies

“…8 which is in accordance with the energy levels of Dy 3+ cation and emission transitions presented in Fig. 7 (b) [52]. The PL spectra consist of three main emission peaks at 476 nm, 577 nm and 666 nm which is assigned to the electronic transitions of 4 F 9/2 6 H 15/2 (blue), 4 F 9/2 6 H 13/2 (yellow) and 4 F 9/2 6 H 11/2 (red) respectively.…”

Preparation and photoluminescence of Dy3+-doped Sr5(PO4)3Cl nanorods

“…Two emission peaks at 480 nm (blue) and 573 nm (yellow) are corresponding to 4 F 9/2 -6 H 15/2 and 4 F 9/2 -6 H 13/2 transitions of Dy 3+ , respectively. The 4 F 9/2 -6 H 15/2 transition is mainly magnetically allowed and hardly varies with the crystal field strength around the dysprosium ion [6]. The 4 F 9/2 -6 H 13/2 transition is a forced electric dipole transition being allowed only at low symmetries with no inversion center [7].…”

Combustion synthesis of Na2Sr(PO4)F:Dy3+ white light emitting phosphor

“…3. [10] It is ions are located at low-symmetry sites with no inversion centers. [11] The low-symmetry location of Dy 3+ results in the predominate emission of 4 F 9/2 → 6 H 13/2 transition (see Fig.…”