VIS-VUV spectroscopy of heavily Tb and Eu doped gadolinium aluminum borate (GAB) crystal

Flux Growth, Thermal, and Luminescence Properties of (Tb3+, Eu3+):GdGa3(BO3)4, Multicolor Phosphors

“…Phosphors based on well-known huntite-type rare-earth-aluminum orthoborates RAl 3 (BO 3 ) 4 (where R = Y or lanthanides) exhibit similar characteristics. A comprehensive spectroscopic description of GdAl 3 (BO 3 ) 4 doped with Eu 3+ and Tb 3+ ions was carried out in …”

“…A comprehensive spectroscopic description of GdAl 3 (BO 3 ) 4 doped with Eu 3+ and Tb 3+ ions was carried out in. 14 However, RGa 3 (BO 3 ) 4 compounds, mainly due to the possibility of isomorphic substitutions in the R positions, can also be used as materials for the fabrication of phosphors. At the same time, rare-earth gallium orthoborates can be grown at lower temperatures and do not undergo phase transition R32 → C2/c, unlike RAl 3 (BO 3 ) 4 materials.…”

Excellent Color Purity and Luminescence Thermometry Performance in Germanate Tellurite Glass Doped with Eu3+ and Tb3+

“…For instance, Solarz et al recently documented the phenomena of excitation, emission and energy transfer between Tb 3+ and Eu 3+ at low and room temperatures. An effective 60% yield of Tb-Eu energy transfer in GAB (20 at.%Tb, 20 at.%Eu) was achieved, and the efficient impact of terbium on the relaxation dynamic of europium luminescent level was also recognized [13]. These different materials find applications in various fields, including lighting, displays and sensors, especially in luminescence thermometry-a technique for measuring temperature based on the temperature-dependent emission characteristics of dopant ions [14].…”

Lanthanide-doped Na2MgScF7 exhibiting downshifting and upconversion emissions for multicolor anti-counterfeiting

“…[9][10][11][12][13] The Eu 3+ ion usually emits strong red light, and the emission wavelength range is 550-650 nm, corresponding to the transition of the 5 D 0 to 7 F n energy level. [14][15][16] On the basis of the ladder-like energy levels, some of the lanthanide ions can realize UC emission, which can convert two or more lowerenergy photons into one higher-energy photon. Typically, three ion pairs, Yb 3+ -Er 3+ , Yb 3+ -Tm 3+ and Yb 3+ -Ho 3+ , have attracted great attention for their efficient UC emissions through the energy transfer upconversion (ETU) mechanism, in which the sensitizer (Yb 3+ ) absorbs lower energy photons and then donates energy to the activator (Er 3+ , Tm 3+ or Ho 3+ ) sequentially.…”