Temperature-dependent luminescence and energy transfer properties of Tb3+ and Eu3+ doped barium borate glasses

Energy Transfer in Dy3+ and Tb3+ Double-Doped Barium Borate Glass

“…These values are very similar to those found for other borate glasses. In Loos et al [ 27 ], an intrinsic lifetime of ms is found for a BaB glass with a Tb content of 1.0 at.%, while the network modifier to network former ratio is 1:2. Padlyak and Drzewiecki [ 28 ] investigated Tb single-doped CaB O and LiCaBO glasses containing 0.5 mol% and 1.0 mol% Tb O .…”

Enhanced Luminescence of Long-Wavelength Broadband Near-Infrared Germanate Phosphors

“…The strongest excitation peak of CGO: Eu 3+ is located between 450 and 475 nm, which is ascribed to the 7 F 0 → 5 D 2 transition of Eu 3+ ions, which is consistent with the emission of blue chips. At 460 nm excitation, CGO: Eu 3+ exhibits an emission spectrum composed of several small spikes at 575 nm ( 5 D 0 → 7 F 0 ), 600 nm ( 5 D 0 → 7 F 1 ), 611–629 nm ( 5 D 0 → 7 F 2 ), 653 nm ( 5 D 0 → 7 F 3 ), and 700 nm ( 5 D 0 → 7 F 4 ). − Among these above peaks, 622 nm ( 5 D 0 → 7 F 2 ) of red light has the strongest emission intensity, which means the highest probability of electric dipole transition. Energy transfer from Eu 3+ to Cr 4+ is expected to occur based on the significant overlaps with the PLE spectrum of CGO: Cr 4+ (Figure b) and the PL spectrum of CGO: Eu 3+ (Figure c).…”

Structure, tunable luminescence and energy transfer in Tb3+ and Eu3+ codoped Ba3InB9O18 phosphors

“…Simultaneously, the rest of the Tb 3+ ions with the 5 D 4 excited state transfer their energy to the 5 D 1 excited state of Eu 3+ ions, leading to red emission from Eu 3+ ions through 5 D 0 -7 F J (J ¼ 0-6) transitions. [37][38][39]…”