无机材料学报2022，Vol.37Issue(8)：897-902,6.DOI:10.15541/jim20210773
Ce掺杂SrMgF4超结构多晶体的吸收/光致发光光谱
Optical Absorption and Photoluminescence Spectra of Ce-doped SrMgF4 Polycrystalline with Superlattice Structure
柳琪 1朱璨 1谢贵震 1王俊 1张东明 1邵刚勤1
作者信息
- 1. 武汉理工大学 材料复合新技术国家重点实验室, 武汉 430070
- 折叠
摘要
Abstract
Rare-earth (RE) ions doped perovskite-related fluorides are candidates for tunable optical materials. In this work, SrMgF4: xCe (x=0, 0.007, 0.013 and 0.035, in mole) powders were synthesized by a precipitation method. X-ray diffraction (XRD) patterns indicate that the obtained phosphors possess monoclinic superstructures. Electrovalence analysis confirms the existence of Ce3+/Ce4+ mixed valence. Two distinct fluorescence bands B and C were observed with different excitation wavelengths in the ultraviolet (UV) light region. Energy levels were modified strongly by the crystal field derived from monoclinic superstructures when the symmetry of Ce3+-polyhedra changed from high- to low- symmetry.关键词
SrMgF4/铈掺杂/超结构/钙钛矿/光致发光Key words
SrMgF4/Ce-doped/superstructure/perovskite/photoluminescence分类
化学化工引用本文复制引用
柳琪,朱璨,谢贵震,王俊,张东明,邵刚勤..Ce掺杂SrMgF4超结构多晶体的吸收/光致发光光谱[J].无机材料学报,2022,37(8):897-902,6.
