Phosphor for the Near-IR and Short-Wave IR Ranges Based on a Garnet Structured Cubic Modification of Lithium–Lanthanum Niobate

• Published in: Physics of the solid state 2019-05, Vol.61 (5), p.874-880
• Main Authors: Baklanova, Ya. V., Lipina, O. A., Maksimova, L. G., Baklanova, I. V., Chufarov, A. Yu, Tyutyunnik, A. P., Zubkov, V. G.
• Format: Article
• Language: English
• Subjects: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ENERGY TRANSFER; GARNETS; Holmium; HOLMIUM IONS; Lanthanum; LANTHANUM COMPOUNDS; LASER RADIATION; Lithium; LITHIUM COMPOUNDS; LUMINESCENCE; NEAR INFRARED RADIATION; Neodymium; NEODYMIUM IONS; NIOBATES; Optical Properties; PHONONS; PHOSPHORS; Physics; Physics and Astronomy; Semiconductor lasers; SENSITIZERS; SOLID SOLUTIONS; Solid State Physics; SOLIDS; Upconversion; VISIBLE RADIATION
• ISSN: 1063-7834; 1090-6460
• DOI: 10.1134/S1063783419050044

Cubic garnets activated by neodymium and holmium, Li 6 CaLa 2 Nb 2 O 12 :Nd 3+ ,Ho 3+ , were obtained by solid-state method. The main regularities of changes in the luminescence properties of Li 6 C-aLa 2 Nb 2 O 12 :Nd 3+ ,Ho 3+ solid solutions in the visible, near-IR, and short-wave IR ranges under 808 nm laser diode radiation are determined. The energy transfer mechanism between active centers, involving the participation of Nd 3+ ions as sensitizers for the luminescence of Ho 3+ ions, is proposed. Low phonon energy, high luminescence intensity in the range of 2.0–3.0 μm, and weak up-conversion luminescence in the region of 450–780 nm make it possible to consider the cubic lithium–lanthanum niobates Li 6 CaLa 2 Nb 2 O 12 :Nd 3+ ,Ho 3+ as promising phosphors of the short-wave IR range.