Photoluminescence properties of rare-earth ion-doped Na5YSi4O12-based glass ceramics
Photoluminescence properties of rare-earth ion-doped Na5YSi4O12-based glass ceramics
复制标题
DOI：
10.1016/j.ceramint.2020.09.023
复制
发表时间：
2021-01
影响因子：
5.2
通讯作者：
T. Okura;Yuta Nojima;K. Kawada;Y. Kojima;K. Yamashita
中科院分区：
文献类型：
--
作者：
T. Okura;Yuta Nojima;K. Kawada;Y. Kojima;K. Yamashita
我们根据 Na3+3xY1−x−yRySi3O9(R: Sm3+, Eu3+, Dy3+, Tb3+) 成分开发了基于稀土离子掺杂 Na5YSi4O12 型材料的光致发光玻璃陶瓷。与烧结陶瓷相比，玻璃陶瓷通常具有优异的化学耐久性、耐热性和成型性。在近紫外光照射下，Sm3+-、Eu3+-、Dy3+-和Tb3+掺杂的玻璃陶瓷分别发出紫橙色、红橙色、黄色和绿色的光。玻璃陶瓷的光致发光发射强度比原玻璃高，且发射强度取决于晶相。对于Sm3+-、Eu3+-和Dy3+-掺杂玻璃陶瓷样品，当参数y分别等于0.03、0.16和0.02时，各种稀土离子掺杂玻璃陶瓷获得最高发射强度。 Sm3+-、Eu3+-、Dy3+- 和 Tb3+ 掺杂样品的内量子效率分别为 3%、37%、7% 和 23%。由此证明Na超离子导电Na5YSi4O12型微晶玻璃具有作为新型荧光粉的潜力。
We developed herein photoluminescent glass ceramics based on rare-earth ion-doped Na5YSi4O12-type materials according to the Na3+3xY1−x−yRySi3O9(R: Sm3+, Eu3+, Dy3+, Tb3+) composition. Glass ceramics generally have the advantages of excellent chemical durability, heat resistance, and moldability over sintered ceramics. Upon irradiation with near-ultraviolet light, Sm3+-, Eu3+-, Dy3+-, and Tb3+-doped glass ceramics emit purplish orange, reddish orange, yellow, and green lights, respectively. The photoluminescent emission intensity of glass ceramics is higher than that of the original glasses, and the emission intensity depends on the crystalline phase. The highest emission intensity of various rare-earth ion-doped glass ceramics is obtained when the parameter y is equal to 0.03, 0.16, and 0.02 for the Sm3+-, Eu3+-, and Dy3+-doped glass ceramic samples, respectively. The internal quantum efficiency is 3%, 37%, 7% and 23% for the Sm3+-, Eu3+-, Dy3+-, and Tb3+-doped samples, respectively. Thus the Na superionic conducting Na5YSi4O12-type glass-ceramics were proved to have potentiality as novel phosphors.