Luminescence properties of Dy3+ ions in a variety of borate and fluoroborate glasses containing lithium, zinc, and lead

Visible luminescence characteristics of Dy3+-doped LBTAF glasses

“…The presence of fluoride content reduces the phonon energy of the host and hence increases the lifetime of the fluorescent level by decreasing the non-radiative decay due to multiphonon relaxation [34]. The quantum efficiency Á, which is one of the important laser parameters can be evaluated using the equation [35]: …”

Photoluminescent properties of Dy3+-activated REAl3(BO3)4 (RE=Y, La, Gd) polycrystalline phosphors from hybrid precursors

“…This feasibility is due to the confinement of characteristic fluorescence spectra of Dy 3+ ion, consisting of 4 F 9/2 → 6 H J (J = 7/2, 9/2, 11/2, 13/2 and 15/2) transitions in visible and near infrared region. Within these emission transitions, the yellow band at 575 nm ( 4 F 9/2 → 6 H 13/2 ) and the blue band at 485 nm ( 4 F 9/2 → 6 H 15/2 ) are predominant transitions [30]. It is also well known that the 4 F 9/2 → 6 H 13/2 transition is hypersensitive ( L = 2, J = 2), and its intensity strongly depends on the host, whereas intensity of the 4 F 9/2 → 6 H 15/2 transition is less sensitive to the host.…”

“…It is also well known that the 4 F 9/2 → 6 H 13/2 transition is hypersensitive ( L = 2, J = 2), and its intensity strongly depends on the host, whereas intensity of the 4 F 9/2 → 6 H 15/2 transition is less sensitive to the host. In suitable environment, yellow-to-blue intensity ratio (Y/B) will change and expected that Dy 3+ ion will emit two primary colors [30]. By suitably adjusting Y/B value, it is possible to obtain near-white emission with Dy 3+ -activated luminescent materials [31].…”

Role of PbO substitution by PbF2 on structural behavior and luminescence of rare earth-doped lead borate glass

“…Some interesting optical [1][2][3] and structural [3][4][5] properties present lead borate glasses containing rare earth ions. Quite large glass-forming region and wide transparency from the UV-vis to the nearinfrared spectral range as well as a large variety of structural groups existing in compositional-dependent lead borate glasses are promising for structural and optical investigations.…”