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1. 长春理工大学 材料科学与工程学院,吉林 长春,130022
2. 中国科学院大学 北京,100049
3. TCL多媒体研发中心, 深圳 广州,518067
纸质出版日期:2018-2-5,
网络出版日期:2017-8-23,
收稿日期:2017-6-1,
修回日期:2017-8-22,
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季洪雷, 米晓云, 张鑫等. 水热合成法制备CaTiO<sub>3</sub>:<em>Re</em><sup>3+</sup>(<em>Re</em>=Eu,Dy)及发光性能[J]. 发光学报, 2018,39(2): 127-133
JI Hong-lei, MI Xiao-yun, ZHANG Xin etc. Luminescent Properties of CaTiO<sub>3</sub>:<em>Re</em><sup>3+</sup> (<em>Re</em>=Eu, Dy) Phosphors Prepared <em>via</em> Hydrothermal Process[J]. Chinese Journal of Luminescence, 2018,39(2): 127-133
季洪雷, 米晓云, 张鑫等. 水热合成法制备CaTiO<sub>3</sub>:<em>Re</em><sup>3+</sup>(<em>Re</em>=Eu,Dy)及发光性能[J]. 发光学报, 2018,39(2): 127-133 DOI: 10.3788/fgxb20183902.0127.
JI Hong-lei, MI Xiao-yun, ZHANG Xin etc. Luminescent Properties of CaTiO<sub>3</sub>:<em>Re</em><sup>3+</sup> (<em>Re</em>=Eu, Dy) Phosphors Prepared <em>via</em> Hydrothermal Process[J]. Chinese Journal of Luminescence, 2018,39(2): 127-133 DOI: 10.3788/fgxb20183902.0127.
采用水热合成法合成了CaTiO
3
:
Re
3+
(
Re
=Eu,Dy)荧光粉,通过XRD(X-ray diffraction)、SEM(Scanning electron microscope)和光谱对样品进行了分析。研究发现在pH=12时,合成出的CaTiO
3
:
Re
荧光粉结晶度和发光性能最好;SEM分析表明荧光粉颗粒尺寸在450 nm左右,分散性好;确定了稀土离子最佳浓度。在353 nm激发下,CaTiO
3
:0.12Dy
3+
的发射峰分别位于485 nm(蓝)和576 nm(黄)。当Dy
3+
浓度发生变化时,两种跃迁产生的蓝黄光发射峰的强度比值(I
Y
/I
B
)也会发生变化,因此,可以利用这一点对CaTiO
3
:Dy
3+
荧光材料的发光颜色进行调谐。
CaTiO
3
:
Re
3+
(
Re
=Eu
Dy) phosphors were synthesized by hydrothermal method. XRD
SEM and PL spectra were used to characterize the samples. The crystallinity and luminescent properties of CaTiO
3
:
Re
3+
phosphors reach optimal state when pH=12
and SEM analysis indicates that the powder has good dispersion when the particle size is about 450 nm. The optimum concentration of rare earth ions is determined. The emission peaks of CaTiO
3
:0.12Dy
3+
locate at 485 nm (blue) and 576 nm (yellow) under 353 nm excitation. The intensity ratio of the blue-yellow emission peaks (I
Y
/I
B
) produced by the two transitions can be regulated
via
adjusting Dy
3+
concentration. Therefore
luminescent color of CaTiO
3
:Dy
3+
phosphor can be tuned by changing Dy
3+
concentration.
CaTiO3水热合成发光pH
CaTiO3hydrothermal methodluminescencepH
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