当前位置: X-MOL 学术Ceram. Int. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Tunable photoluminescence properties of Dy3+ doped LLZO phosphors for WLED and dosimetry applications
Ceramics International ( IF 5.1 ) Pub Date : 2021-09-23 , DOI: 10.1016/j.ceramint.2021.09.226
Ganesh Kumar K 1, 2 , Balaji Bhargav P 1, 2 , Aravinth K 1, 2 , Ramasamy P 1 , Shashwati Sen 3 , Raja Arumugam 1, 2
Affiliation  

Trivalent Dysprosium (Dy3+) activated garnet structured Li7La3Zr2O12 (LLZO) phosphors were synthesized by conventional solid state reaction method. The phase structure of the prepared Dy3+ doped LLZO powders was confirmed by X-ray diffraction and Raman Spectroscopy studies. Field Emission Scanning Electron Microscopy (FESEM) studies indicated a change in morphology and an increase in the area of the intergranular Li–Al–O liquid layer is observed with the increase of Li and dopant concentrations. Composition analysis of the prepared samples was examined by X-ray photoelectron spectroscopy (XPS) analysis. PL emission band observed at 579 nm was assigned to4F9/2 - 6H13/2 transition in yellow region under the ultraviolet excitation wavelength of 351 nm. White light emission was confirmed by the Commission Internationale de L'Eclairage (CIE) chromatic coordinate graph. Thermoluminescence studies were carried out and the results indicated that the grown phosphors are suitable for industrial dosimetric applications where high doses are needed to be measured.



中文翻译:

用于 WLED 和剂量测定应用的 Dy3+ 掺杂 LLZO 荧光粉的可调光致发光特性

三价镝 (Dy 3+ ) 活化的石榴石结构的 Li 7 La 3 Zr 2 O 12 (LLZO) 荧光粉通过常规固态反应方法合成。通过 X 射线衍射和拉曼光谱研究证实了制备的 Dy 3+掺杂的 LLZO 粉末的相结构。场发射扫描电子显微镜 (FESEM) 研究表明,随着 Li 和掺杂剂浓度的增加,观察到晶间 Li-Al-O 液体层的形态变化和面积增加。通过X射线光电子能谱(XPS)分析检查制备的样品的组成分析。在 579 nm 处观察到的 PL 发射带被指定为4 F9/2 - 6 H 13/2在 351 nm 紫外激发波长下黄色区域的跃迁。白光发射得到了国际照明委员会 (CIE) 色度坐标图的证实。进行了热致发光研究,结果表明生长的磷光体适用于需要测量高剂量的工业剂量测定应用。

更新日期:2021-09-23
down
wechat
bug