摘要
采用精氨酸辅助水热法,通过调节RE3+和F-源的摩尔比制备出亚微米级六棱柱形β-NaGdF4∶Eu3+发光材料,用XRD、FESEM、EDS和荧光光谱对样品的形貌、结构和发光性能进行了表征。结果表明:随着F-源量的增加,样品由空心结构变成实心结构。当RE3+∶F-=1∶8时制得的表面光滑均匀的NaGdF4∶Eu3+空心六棱柱的发光强度最强。以Eu3+的5D0→7F2跃迁占据主导地位,说明Eu3+占据NaGdF4非对称的1a格位和非对称的1f格位。
Sub-microscale 13-NaGdF4： Eu3＋ luminescence materials with hexagonal prism morphology were prepared via arginine-assisted hydrothennal method by conveniently adjusting different molar radio of RE3＋ and F source. The XRD, FESEM, EDS and increasing, the shapes of structure, morphology and properties of the samples were characterized by photoluminesence the samples have spectra. The results showed that as the F- content been changed from hollow into solid. The luminescent intensity of NaGdF4： Eu3 ＋ hollow hexagonal prism with smooth and uniform surface was considered to be the best, likewise a fluoride excess （RE3 ＋： F- = 1：8 ）. The 5D0→7F2 was the main transition of Eu3＋ , indicating that Eu3 ＋ was occupied in 1 a and 1 f site of NaGdF4.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2013年第10期2019-2023,共5页
Journal of Synthetic Crystals
基金
国家自然科学基金(51072026
50972020)
吉林省科技发展计划项目(20130206002GX)
