人工晶体学报2024，Vol.53Issue(7)：1112-1120,9.
Er掺杂PbF2晶体的局域团簇结构与光谱性能研究
Investigation of Localized Cluster Structure and Spectral Properties of Er-Doped PbF2 Crystals
摘要
Abstract
In this paper,a series of Er∶PbF2 crystals were successfully grown by Bridgman method.The first-principles calculation based on the density functional theory was applied to investigate the clustering effect of Er3+in PbF2 crystals in details.The relationship between the up-conversion(UC)luminescence properties(luminescence intensity,color variation)and the cluster structure in Er∶PbF2 crystals was obtained for the first time.It is found that as Er3+concentration increases,the clusters evolve from monomers to higher-order configurations,with the distance between Er3+ions decreasing and then increasing,resulting in the intensity of the red emission in the UC fluorescence first increasing and then decreasing,and the red-green luminescence ratio also decreases after the Er3+concentration is higher than 6.5％(mole fraction),indicating that the luminescence color can be adjusted from red to yellow-green.This study proves that the structural evolution of rare-earth ion clusters could regulate the spectroscopic properties of Er∶PbF2,which provides a novel method for the design of multi-color luminescent materials.关键词
Er∶PbF2晶体/上转换发光/密度泛函理论/铒离子团簇/光谱性能Key words
Er∶PbF2 crystal/up-conversion luminescence/density functional theory/erbium cluster/spectral property分类
数理科学引用本文复制引用
李琳,张沛雄,谭俊成,朱思祁,尹浩,李真,陈振强..Er掺杂PbF2晶体的局域团簇结构与光谱性能研究[J].人工晶体学报,2024,53(7):1112-1120,9.基金项目
国家自然科学基金(51972149,61935010,51872307,51702124,62175091,51702124) （51972149,61935010,51872307,51702124,62175091,51702124）
广东省重点领域研究发展计划(2020B0090922006) （2020B0090922006）
广州市科技计划(2024A03J0240) （2024A03J0240）
