一种近紫外宽带激发的高效红色荧光粉及其制备方法
By studying the chemical composition and preparation method of LiKBi2(1-x)Eu2x(MoO4)4, the problem of weak absorption of Eu3+ ion-activated red phosphor was solved, and the preparation of high-efficiency red phosphor was achieved. It is suitable for various chips, has low cost, and high luminous efficiency.
CN118562504BActive Publication Date: 2026-07-17JINGDEZHEN CERAMIC UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JINGDEZHEN CERAMIC UNIV
- Filing Date
- 2024-05-29
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing Eu3+ ion-activated red phosphors have weak absorption, are difficult to control in preparation, cannot be matched with various chips, have low luminous efficiency, and cannot be widely used.
Method used
The chemical composition of LiKBi2(1-x)Eu2x(MoO4)4 is adopted. The preparation method includes grinding and heat treatment, with a heat treatment temperature of 550~600℃, which is suitable for large-scale production.
Benefits of technology
The prepared red phosphor exhibits strong absorption in the near-ultraviolet region, high internal quantum efficiency, absorption efficiency, and external quantum efficiency, as well as high luminous efficiency. It is suitable for various chips, inexpensive, and the method is simple.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN118562504B_ABST
Abstract
本发明公开了一种近紫外宽带激发的高效红色荧光粉及其制备方法，其化学表达式为LiKBi2(1‑x)Eu2x(MoO4)4，其中0.2<x<1；其制备方法如下：步骤一：根据化学式LiKBi2(1‑x)Eu2x(MoO4)4，称取相应离子的化合物；步骤二：将步骤一中称好的原料放入玛瑙研钵中，研磨30 min得到均匀的混合粉料；步骤三：将步骤二获得的混合粉料放入刚玉坩埚中，并置于马弗炉中进行热处理，冷却后经研磨获得高效红色荧光粉。所制红色荧光粉发光效率高、响应时间短，激发范围能覆盖300~400 nm的近紫外范围，能适用不同的芯片，且制备温度低、方法简单、制备所需原料廉价易得，因此具有很好的应用价值。
Need to check novelty before this filing date? Find Prior Art