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新疆师范大学 物理与电子工程学院, 新疆矿物发光材料及其微结构实验室,新疆 乌鲁木齐,830054
纸质出版日期:2016-2-10,
收稿日期:2015-11-6,
修回日期:2015-11-18,
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万英, 何久洋, 马媛媛等. 蓝色长余辉材料CaAl2O4:Eu2+,Li+的发光性质[J]. 发光学报, 2016,37(2): 181-186
WAN Ying, HE Jiu-yang, MA Yuan-yuan etc. Luminescent Properties of Blue Emitting Long Afterglow Phosphors CaAl2O4:Eu2+,Li+[J]. Chinese Journal of Luminescence, 2016,37(2): 181-186
万英, 何久洋, 马媛媛等. 蓝色长余辉材料CaAl2O4:Eu2+,Li+的发光性质[J]. 发光学报, 2016,37(2): 181-186 DOI: 10.3788/fgxb20163702.0181.
WAN Ying, HE Jiu-yang, MA Yuan-yuan etc. Luminescent Properties of Blue Emitting Long Afterglow Phosphors CaAl2O4:Eu2+,Li+[J]. Chinese Journal of Luminescence, 2016,37(2): 181-186 DOI: 10.3788/fgxb20163702.0181.
采用高温固相法制备了CaAl
2
O
4
:Eu
2+
Li
+
发光材料
并讨论了掺杂Li
+
对CaAl
2
O
4
:Eu
2+
发光性质的影响。X 射线衍射(XRD)和PL测试分析表明
在CaAl
2
O
4
:Eu
2+
中掺入Li
+
后
Eu
2+
的发光有一定的增强
而余辉时间则延长了4倍左右。通过热释光谱测量
分析了其陷阱能级的数量并估算了陷阱能级深度。结果表明
掺杂Li
+
会在发光离子周围产生更多的电子陷阱
使陷阱的密度和深度增加
从而提高荧光粉的余辉性能。
CaAl
2
O
4
:Eu
2+
Li
+
phosphors were synthesized by high temperature solid-state method. Influence of Li
+
doping on the luminescence properties of CaAl
2
O
4
:Eu
2+
was studied. X-ray diffraction (XRD) and photoluminescence (PL) spectra analysis show that the luminescence intensity of CaAl
2
O
4
:Eu
2+
is enhanced and the decay time of CaAl
2
O
4
:Eu
2+
is increased approximately 4 times with the doping of Li
+
. By the use of thermo luminescence spectrum measurement
the number and the depth of trap level were analyzed. The doping of Li
+
can produce more electron traps around the luminescence ions
resulting the increase of the trap density and depth
so as to improve the afterglow properties of phosphor.
CaAl2O4:Eu2+Li+高温固相法蓝色长余辉材料电子陷阱
CaAl2O4:Eu2+Li+high temperature solid-phase methodblue emitting long afterglow materialdefects level
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滕晓明.蓝紫色铝酸盐长余辉荧光粉的制备与发光性能研究[D]. 芜湖: 安徽师范大学, 2005. TENGX M. Preparation and Luminescent Properties of Bluish Purple Aluminate Long Afterglow Phosphors [D]. Wuhu: Anhui Normal University, 2005. (in Chinese)
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