摘要
应用燃烧法在较低温度(600℃)下,于空气中快速合成BaMgAl10O17∶Eu2+(BAM)荧光体。通过XRD和荧光光谱对荧光体进行表征和研究,考察了Eu2+的掺入浓度、尿素用量和Sr2+的掺杂等对荧光体发光性能的影响。结果表明BaMgAl10O17∶Eu2+荧光粉在450nm处的荧光发射源于Eu2+的4f65d1-4f7跃迁。荧光体的发射强度与Eu2+浓度有很大关系,当Eu2+摩尔分数为10%时,发射强度最大。尿素用量对荧光体结晶性能和发光性能有很大影响,当尿素与硝酸盐之比为2.5∶1时,荧光体发光强度最高。Dy3+、Er3+、Nd3+和Pr3+掺杂时,荧光体发光强度增加。Sr2+的掺杂对BAM荧光体的晶体结构和发光性能有很大影响。
The aluminate phosphor BaMgAll0O17 ：Eu^2＋ （BAM） was successfully synthesized by rapid combustion process at 600 ℃ furnace temperature. The phosphor was characterized by XRD and fluorescence spectra. The effect of urea and the ratio of Sr^2＋ were inspected. The results showed that the emission spectrum of BaMgAl10O17 ：Eu^2＋ peaking at 450 nm was assigned to the Eu^2＋ 4f^65d1-4f7. The luminescence intensity of the phosphor depended on the concentration of Eu^2＋ highly and reached a maximum at 10 %（mole fraction）. Additionally the study also indicated that the amount of urea had a great effect on the crystal performance and luminescent property of phosphor. The luminescence intensity of the phosphor was the strongest when the value of urea： NO3^- was 2.5： 1. The luminescence intensity of the phosphor would increase with doping rare earth ions, including Dy^3＋ ,Er^3＋ , Nd^3＋ and Pr^3＋. The crystal performance and luminescent property had a great change when Sr^2＋ ions was doped in BAM.
出处
《液晶与显示》
CAS
CSCD
北大核心
2007年第1期32-36,共5页
Chinese Journal of Liquid Crystals and Displays
基金
江苏省高校自然科学基金资助项目(No.03KJD320062)
