Premium
Eu 3+ –Eu 2+ ‐doped xAl 2 O 3 –ySiO 2 and xAl 2 O 3 –zMgO composites phosphors
Author(s) -
Guo Qihuang,
Wu YuHeng,
Wu Yuansheng,
Yu Lixin,
Gao Zhenyu,
Zhong Jianlin,
Zou Yingxuan
Publication year - 2020
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.3743
Subject(s) - chromaticity , analytical chemistry (journal) , luminescence , phosphor , electron paramagnetic resonance , materials science , doping , crystal structure , crystallography , crystal (programming language) , chemistry , physics , nuclear magnetic resonance , optics , programming language , optoelectronics , chromatography , computer science
In this paper, the Eu 3+ –Eu 2+ (4%, molar ratio)‐doped xAl 2 O 3 –ySiO 2 (x = 0–2.5, y = 1–5) and xAl 2 O 3 –zMgO (x = 0–1.5, z = 0–3) composites phosphors with different Al 2 O 3 to SiO 2 (A/S) and Al 2 O 3 to MgO (A/M) ratios were prepared using a high‐temperature solid‐state reaction under air atmosphere. The effects of the A/S and A/M on luminescence properties, crystal structure, electron spin resonance, and Commission Internationale de l’Eclairage chromaticity coordinates of the samples were systematically analyzed. These results indicated that the different A/S and A/M ratios in the matrix effectively affected the crystal phase, degrees of self‐reduction of Eu 3+ , and led the relative emission intensity of Eu 2+ /Eu 3+ to change and adjust.