Preparation method and application of Mn < 4 + >-doped perovskite type antimonate broadband red fluorescent powder

• Main Authors: LIAO CHUAN'AN, GUO XINJING, LI XUEHUA, MENG TING, HUANG MEIPING, HUANG YIN, ZHOU CHUNYAN
• Format: Patent
• Language: Chinese; English
• Published: 15.03.2024
• Subjects: ADHESIVES; AGRICULTURE; ANIMAL HUSBANDRY; BASIC ELECTRIC ELEMENTS; CHEMISTRY; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FISHING; FORESTRY; HORTICULTURE; HUMAN NECESSITIES; HUNTING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; SEMICONDUCTOR DEVICES; TRAPPING; WATERING

The invention discloses Mn < 4 + > doped perovskite type antimonate broadband red fluorescent powder, the chemical general formula of the fluorescent powder is LaGeSbO6: xMn < 4 + >, and x is more than 0 and less than or equal to 2.0%. The inventor also establishes a corresponding preparation method, that is, a compound containing lanthanum ions La < 3 + >, a compound containing germanium ions Ge < 4 + >, a compound containing antimony ions Sb < 5 + > and a compound containing transition metal tetravalent manganese ions Mn < 4 + > are used as raw materials, and a high-temperature solid-phase method is adopted for preparation. Under the condition that the sintering temperature and other environments are the same, the proportion of Mn < 4 + > in the fluorescent powder can be changed by adjusting the doping amount of Mn < 4 + >, so that the emission spectrum of the fluorescent powder is regulated and controlled. Researches show that the obtained fluorescent powder product is excellent in performance, is much wid