Li < + >-doped long-afterglow luminescent material as well as preparation method and application of Li < + >-doped long-afterglow luminescent material

• Main Authors: CHEN TAO, CUI GUANGRONG, LI ZHELI
• Format: Patent
• Language: Chinese; English
• Published: 23.06.2023
• Subjects: ADHESIVES; CHEMISTRY; DYES; HOROLOGY; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; MECHANICALLY-DRIVEN CLOCKS OR WATCHES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PHYSICS; POLISHES; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS

The invention belongs to the technical field of noctilucent materials for watch dials, and discloses a Li < + >-doped long-afterglow luminescent material, a preparation method of the Li < + >-doped long-afterglow luminescent material and application of the Li < + >-doped long-afterglow luminescent material, the preparation method of the Li < + >-doped long-afterglow luminescent material comprises the following steps: step 1, mixing a lithium-containing compound and a D-containing compound, and sintering to obtain a mixture A; 2, mixing the mixture A with an aluminum compound, a gallium compound, a europium compound and a dysprosium compound, and sintering the mixture in a hydrogen-containing inert atmosphere at the temperature of 1100-1200 DEG C to obtain the Li < + >-doped long-afterglow luminescent material with the pressure of 0.01-0.05 bar; d is Sr or a composition of Sr and Ca, and when D is the composition of Sr and Ca, the molar ratio of Sr to Ca is (0.8-0.95): (0.05-0.2). 本发明属于手表表盘用夜光材料技术领域，公开了一种Li+掺杂