摘要
采用高温固相法合成了SrMoO4:Dy3+荧光粉。在紫外光(λ=353nm)激发下,该样品发射出Dy3+的特征光谱。用热分析仪、X射线粉末衍射和荧光光谱对样品的结构、性能等进行了研究,考察了Dy的掺杂量、不同助熔剂对样品的结构和性能的影响,并讨论Dy3+浓度猝灭机理。研究表明:合成过程中添加适量的复合助熔剂Li2CO3+H3BO3,并当Dy3+的掺杂量为4%(摩尔分数)时,样品的荧光强度最强。这也说明了能量从基质MoO42–传递到Dy3+是十分有效的。
Trivalent dysprosium ion （Oy3＋） activated strontium molybdate （SrMoO4） phosphor was synthesized via solid-state reaction in a weak reductive atmosphere of active carbon. The effects of the sintering temperature, the activator concentration and the different fluxes on the luminescence properties were investigated by thermogravimetry^lerivative thermogravimetry, X-ray diffraction and photoluminescence spectroscopy, respectively. The excitation and emission spectra indicate that this phosphor can be effectively excited by near UV light of 387 urn, and it exhibits a bright yellow emitting. The optimum concentration for Dy3＋ is 4%. The results indicate that SrMoO4：Dy3＋ may be a potential luminescent material for solid-state lighting applications.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2012年第12期1755-1759,共5页
Journal of The Chinese Ceramic Society
基金
福建省自然科学基金项目(2011J01037)
福建船政交通职业学院科技发展基金项目(KY1114)资助
关键词
镝掺杂钼酸锶
荧光粉
固相法
光谱性质
dysprosium-doped strontium molybdate
phosphor
solid-state reaction
luminescence
