METHOD FOR PRODUCING LUMINESCENT PARTICLES

• Main Authors: FIEDLER TIM, TRAGL SONJA, JERMANN FRANK
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2021
• Subjects: ADHESIVES; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention relates to a method for producing luminescent substance particles having at least one first protective layer, and the method comprises the following steps: providing luminescent substance particles, treating silicon-containing and/or aluminum-containing luminescent substance particles with an acid solution such that a silicon-containing second protective layer is formed on the surface of the luminescent substance particles, the second protective layer containing silicon has a higher content of silicon than the light-emitting substance particles, and/or a second protective layer containing aluminum is formed on the surface of the light-emitting substance particles, the second protective layer containing aluminum has a varying aluminum content on the surface compared to the light-emitting substance particles, and at least one first protective layer is applied to the surface of the phosphor particles by means of atomic layer deposition. The method steps comprising the following steps: depositing a