Novel luminescence-adjustable fluorescent powder and preparation method thereof

• Main Authors: WU ZHANCHAO, LIU JIE, ZHANG XUE
• Format: Patent
• Language: Chinese; English
• Published: 23.02.2021
• Subjects: ADHESIVES; CHEMISTRY; DYES; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES

The invention relates to the field of LED and rare earth doped luminescence, in particular to novel luminescence-adjustable fluorescent powder and a preparation method thereof. The chemical formula ofthe fluorescent powder is Sr5.00-2x-yNaxTbx(PO4)3Br: yEu<2+>, x is the molar weight of [Na <+>, Tb <3+>] ion pair substituted [Sr <2+>, Sr <2+>] ion pair, the value range is 0<x<=0.60, and y is the molar weight of Eu <2+> substituted Sr<2+> and the value range is 0<y<=0.10. The fluorescent powder is simple to prepare, under the condition of the same sintering temperature and other environments, achemical unit substitution strategy is adopted, [Na <+>, Tb <3+>] ion pairs replace [Sr <2+>, Sr <2+>] ion pairs in an original compound, the purpose of regulating and controlling the light emittingcolor of the fluorescent powder is achieved, and the light emitting intensity of Tb <3+> is remarkably improved through Eu <2+> co-doping. 本发明涉及LED及稀土掺杂发光领域，尤其涉及一种新型的发光可调的荧光粉及其制备方法。该荧光粉的化学分子式为Sr5.00-2x-yNaxTbx(PO4)3Br:yEu2+,其中，