Co-existence and unique co-emission properties of Eu3+/Eu2+ and Sm3+/Sm2+ in LiSrB9O15 host lattice

Precisely Manipulating the Self‐Reduction of Manganese in MgGa2O4 through Lithium Incorporation for Optical Thermometry and Anti‐Counterfeiting

“…Hence, the smaller the variation value in the chemical bond energy of the variable valence ions, the more likely they are going to occupy the lattice, and then realize the self-reduction behavior. [3] Herein, the theoretical calculations of the bond energy were performed based on the following equations: [3,4]…”

“…rare-earth ions in LiSrB 9 O 15 and Ba 2 CaB 2 Si 4 O 14 compounds. [3,4] Unfortunately, there are no reports with a detailed discussion of the self-reduction mechanisms of Mn ions via the bond energy theory. Thereby, more attention should be paid to investigate the self-reduction process of Mn ions using this theory.…”

Modulating Mn self-reduction and multimodal luminescence in CaSb2O6 through La3+ doping for quadruple-mode dynamic anti-counterfeiting and optical temperature sensing applications

“…In the CSO crystal, neighboring octahedra share all oxygen atoms and all bonds in the structure have a (Ca, Sb)-O-(Ca, Sb) linkage, building a special three-dimensional framework similar to the rigid structure of SrB 4 O 7 . 26,[30][31][32] Mn 2+ and Mn 4+ ions are well-known luminescent centers and their optical properties have been studied extensively in many host lattices. 33,34 The ionic radii of Mn 2+ and Mn 4+ are 0.83 and 0.53 Å (coordination number is 6), while that of Ca 2+ and Sb 5+ is 1.00 and 0.60 Å, respectively.…”

Physicochemical Characterization of the Hybrid Molybdate–Tungstate Materials for Solid-State Lighting

“…9−12 W-LEDs are the next-generation light source because of their high luminous efficiency, long lifetime, high thermal stability, 13,14 absence of pollution, 11,15,16 and low price. 17,18 For this reason, W-LEDs are a prospective replacement for conventional light sources. 18,19 Nowadays, commercial white LEDs available in the market are produced by combining a blue LED chip with yellow (YAG:Ce 3+ ) phosphors.…”

“…Photoluminescent materials based on rare earth elements have been attractive for novel fluorescent probes, effective spectral converters for solar cells, , used in an anticounterfeiting application, optical sensors for oxygen detection, and used in solid-state lighting, ,− general fluorescent lamps, energy-saving lamps, and white light-emitting diodes (W-LEDs). − W-LEDs are the next-generation light source because of their high luminous efficiency, long lifetime, high thermal stability, , absence of pollution, ,, and low price. , For this reason, W-LEDs are a prospective replacement for conventional light sources. , Nowadays, commercial white LEDs available in the market are produced by combining a blue LED chip with yellow (YAG:Ce 3+ ) phosphors. Regrettably, this combination lacks a red component, rendering it poor quality for indoor lighting due to its high correlated color temperature (CCT > 6000 K) and low color rendering index (CRI, Ra < 80).…”