Synthesis, photoluminescence and mechanoluminescence properties of Eu3+ ions activated Ca2Gd2W3O14 phosphors

Hydrothermal reactions: From the synthesis of ligand to new lanthanide 3D-coordination polymers

“…The spectrum shows the most intense peak at 619 nm, related to the electric dipole transition 5 D 0 -7 F 2 . This transition is characteristic of the red emission in europium compounds and also suggests that the coordination sites occupied by the Eu 3 þ ions must have local symmetry without inversion center [38] in good agreement with the crystallographic data.…”

A study of the luminescence in near UV-pumped red-emitting novel Eu3+-doped Ba3Ca3(PO4)4 phosphors for white light emitting diodes

“…5 D 2 ) and 526/533 nm ( 7 F 0 ? 5 D 1 ) are the characteristic transitions of Eu 3+ ions in host lattice [42]. Among, these several sharp lines, the dominant intense excitation peak lies at 394 nm corresponding to 7 F 0 ?…”

Emission analysis of RE3+ (RE=Eu, Sm, Dy):MgY4Si3O13 phosphors

“…Among the rare earth ions, Eu 3 þ is used as an active luminescent source of red phosphors because of its characteristic emission band at $ 613 nm via 4f-4f transitions, useful in fluorescent lamps and color lighting [5,6]. Another important ion among the derivatives of rare earth elements is Sm 3 þ , which can produce intense light encompassing the orange and red color regions because of the transitions from the excited state 4 G 5/2 to the ground state 6 H 5/2 and also to the higher levels given by 6 H j , where j¼7/2, 9/2, and 11/2.…”

“…Another important ion among the derivatives of rare earth elements is Sm 3 þ , which can produce intense light encompassing the orange and red color regions because of the transitions from the excited state 4 G 5/2 to the ground state 6 H 5/2 and also to the higher levels given by 6 H j , where j¼7/2, 9/2, and 11/2. Sm 3 þ with different host materials has found applications in high-density optical storage, undersea communication, various fluorescent devices, color displays, and visible solid-state lasers [7,8].…”