发光学报2013，Vol.34Issue(8)：959-964,6.DOI:10.3788/fgxb20133408.0959
Yb3+,Tm3+离子掺杂浓度对NaYF4∶Yb3+,Tm3+发光光谱的影响
Effect of Doping Rare-earth Concentrations on The Luminescence Spectrum of NaYF4∶ Yb3+ , Tm3+ Nanocrystals
摘要
Abstract
The NaYF4∶Yb3+,Tm3+ nanocrystals were synthetized with different doping concentrations of Yb3+,Tm3+ ions by a thermal decomposition method.The morphology,crystalline phase and optical properties were characterized by scanning electron microscopy (SEM),X-ray diffraction (XRD) and luminescent spectra.With the concentrations of Tm3+ increasing,the emission intensity of Tm3+ firstly increased and then decreased because of the effects of ion concentration quenching and cross relaxation between the neighboring Tm3+.The decrease of the luminescent intensity with the increase of Yb3+ ions is due to the concentration quenching effect.关键词
上转换/NaYF4/Yb3+,Tm3+/交叉弛豫/浓度猝灭Key words
upcoversion / NaYF4 ∶ Yb3+ , Tm3+ / cross-relaxation/ concentration quenching effect分类
数理科学引用本文复制引用
赵承周,孔祥贵,宋曙光,李晓坤..Yb3+,Tm3+离子掺杂浓度对NaYF4∶Yb3+,Tm3+发光光谱的影响[J].发光学报,2013,34(8):959-964,6.基金项目
国家自然科学基金(61275202,61275197,11174277,11004189)资助项目 （61275202,61275197,11174277,11004189）
