Photochromic ceramic, preparation method thereof and optical device: Fid-Bau Portal

Photochromic ceramic, preparation method thereof and optical device

WEN ZICHENG / CAO YONGGE / ZUO CHUANDONG / TANG WEI / LI YINGKUI / WEN ZEPING

The invention relates to the field of anti-counterfeiting ceramic materials, in particular to photochromic ceramic, a preparation method thereof and an optical device. The invention relates to a photochromic ceramic. The photochromic ceramic is Pr < 3 + > doped BaMgSiO4. The photochromic ceramic provided by the invention has the advantages of physical and chemical stability, fast photochromic response, large photochromic contrast ratio and reversibility; and the photochromic ceramic has fluorescence, can be applied to double anti-counterfeiting, is high in anti-counterfeiting precision and is not easy to copy. The Pr < 3 + >-doped BaMgSiO4 photochromic ceramic is prepared through a high-temperature solid-phase reaction method, the preparation process is simple, the period is short, raw materials are simple and cheap, and industrial large-scale production is facilitated. The optical device comprises the photochromic ceramic, so that double anti-counterfeiting application of photochromic anti-counterfeiting and fluorescent anti-counterfeiting is realized, and the optical device has the advantages of large photochromic contrast ratio, high response speed, reversible photochromic behavior, high anti-counterfeiting detection precision and difficulty in imitation.

本申请涉及防伪陶瓷材料领域，具体而言，涉及一种光致变色陶瓷及其制备方法以及光学器件。一种光致变色陶瓷，该光致变色陶瓷为Pr3+掺杂BaMgSiO4。本申请提供的光致变色陶瓷物理化学稳定性，光致变色响应快、光致变色对比度大且可逆；且该光致变色陶瓷具有荧光性，能够应用于双重防伪，防伪精度高，不易被复制。本申请通过高温固相反应法制备Pr3+掺杂BaMgSiO4光致变色陶瓷，制备工艺简单，周期短，原料简单廉价，有利于工业化大规模生产。该光学器件，通过包含前述的光致变色陶瓷，实现了光致变色防伪与荧光防伪作为双重防伪应用，具有光致变色对比度大、响应速度快以及可逆的光致变色行为，防伪检测精度高，不易仿制。

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