摘要
Eu^(2+)离子具有许多能量比较低的吸收带,因此在多种发光基体中都可作为有效的激活剂.Eu^(2+)离子激活的磷酸盐、硅酸盐,铝酸盐和硼酸盐等都是优良的荧光材料,其发射峰范围在350-575nm.Eu^(2+)离子激活的SrB_4O_7是其中一种重要的新型长波(A段)紫外灯用荧光材料,早已广泛地应用于工农业、公安、国防、环保及医疗卫生等领域.
A sample was produced by heating the mixture of boric acid,strontium carbonateadded europium oxide at 800--1000℃ in reductive atmosphere for 4 hours.Accordingto the pattern of X-ray diffraction of the sample, Its phase and mechanism of emis-sion under the ultraviolet excitation of sample are discussed. It was shown that theemission was relative with the content of Sr_(1-x)Eu_xB_4O_7 as well as the impurity of the sample.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
1992年第5期702-706,共5页
Acta Physico-Chimica Sinica
关键词
X射线衍射
激活剂
铕离子
发光
UV-emission
X-ray diffraction
Luminous center Eu^(2+)
