Tailoring defect structure and dopant composition and the generation of various color characteristics in Eu³⁺ and Tb³⁺ doped MgF₂ phosphors

Abstract

A novel approach to generate a wide range of color characteristics such as near white, yellow, orange and red in MgF2, by proper tailoring of the defect structure and varying...

Sustainability applications of rare earths from metallurgy, magnetism, catalysis, luminescence to future electrochemical pseudocapacitance energy storage

“…Eu 2+ and Ce 3+ based on (4f) n−1 5d-(4f) n transitions preserve structural stability at high electric eld intensities; therefore CaS:(Eu 2+ /Ce 3+ ) and SrS:(Eu 2+ /Ce 3+ ) should in future realize the unique color luminescence potential of RE-EL. 100,101 For rare earth laser materials, garnet-type Nd 3+ -activated yttrium aluminum garnet (YAG:Nd 3+ ) with a narrow uorescence spectral line, low threshold, and high power has shown the best performance. Nd 3+ single replacement of Al 3+ in the lattice in YAG, where the emission spectrum can broaden uniformly, is currently the best option for laser guidance, laser ranging, laser medical treatment, and other elds.…”

Excitation-Controlled Host–Guest Multicolor Luminescence in Lanthanide-Doped Calcium Zirconate for Information Encryption

“…However, it is clear that adjusting the dopant concentration [36,39] and introducing ions of different luminous colors, including different Ln 3+ ions [37,40] and non-rare-earth ions [41,42], are still the principal strategies by which to achieve multicolor luminescence; therefore, multicolor luminescence is still absent in composition-fixed Ln 3+ -doped CaZrO 3 . In addition, for the recently studied Tb 3+ /Eu 3+ co-doped colorful phosphors beyond CaZrO 3 , such as La 4 GeO 8 :Tb/Eu [43], K 5 Eu(MoO 4 ) 4 :Tb [44], MgF 2 :Tb/Eu [45], K 3 Lu(PO 4 ) 2 :Tb/Eu [46], Sr 3 MgSi 2 O 8 :Eu/Tb [47], and Gd 2 B 2 WO 9 :Eu/Tb [48], excitation-dependent multicolor luminescence is also very rare.…”