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1. 重庆理工大学 光电信息学院 重庆,400054
2. 中国科学院 国际材料物理中心,辽宁 沈阳,110016
纸质出版日期:2012-12-10,
收稿日期:2012-8-14,
修回日期:2012-9-21,
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邓家桃, 冯文林, 曾超, 张盈, 金叶. 长余辉发光材料CaAl<sub>2</sub>O<sub>4</sub>∶Eu<sup>2+</sup>,Gd<sup>3+</sup> 的制备和发光性能研究[J]. 发光学报, 2012,33(12): 1315-1318
DENG Jia-tao, FENG Wen-lin, ZENG Cao, ZHANG Ying, JIN Ye. Synthesis and Luminescent Properties of Afterglow Materials CaAl<sub>2</sub>O<sub>4</sub>∶Eu<sup>2+</sup>,Gd<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2012,33(12): 1315-1318
邓家桃, 冯文林, 曾超, 张盈, 金叶. 长余辉发光材料CaAl<sub>2</sub>O<sub>4</sub>∶Eu<sup>2+</sup>,Gd<sup>3+</sup> 的制备和发光性能研究[J]. 发光学报, 2012,33(12): 1315-1318 DOI: 10.3788/fgxb20123312.1315.
DENG Jia-tao, FENG Wen-lin, ZENG Cao, ZHANG Ying, JIN Ye. Synthesis and Luminescent Properties of Afterglow Materials CaAl<sub>2</sub>O<sub>4</sub>∶Eu<sup>2+</sup>,Gd<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2012,33(12): 1315-1318 DOI: 10.3788/fgxb20123312.1315.
采用高温固相法制备了CaAl
2
O
4
∶Eu
2+
Gd
3+
长余辉发光材料。利用X射线衍射(XRD)和荧光光谱测试等手段对所制备的样品进行结构表征和发光性能的分析
探究Eu
2+
摩尔分数为3.5%
硼酸质量分数为0.5%
Gd
3+
摩尔分数分别为2%
3%
4%
5%时样品的发光性能。研究结果表明:实验成功地合成了CaAl
2
O
4
∶Eu
2+
Gd
3+
粉晶
并且Eu
2+
和Gd
3+
的引入并未引起CaAl
2
O
4
晶体结构的改变。样品的激发光谱和发射光谱均为宽带谱
且发射光谱的最大峰值位于444 nm左右
属于Eu
2+
的4f
6
5d→4f
7
跃迁
所发光为蓝光。蓝色荧光粉CaAl
2
O
4
∶3.5%Eu
2+
3%Gd
3+
的发光强度最好。
The afterglow materials CaAl
2
O
4
∶Eu
2+
Gd
3+
were synthesized by high-temperature solid- phase method. The structure and luminescent properties of the samples were characterized by X-ray diffraction (XRD) and fluorescence spectra at room temperature. The effects of luminescent properties for 3.5% Eu
2+
(mole fraction) and 0.5% boric acid (mass fraction) doped CaAl
2
O
4
∶Eu
2+
Gd
3+
with different mole fraction of Gd
3+
(2%
3%
4%
5%) were investigated in detail. The results showed that CaAl
2
O
4
∶Eu
2+
Gd
3+
were successfully synthesized and the structure was not changed even introducing Eu
2+
and Gd
3+
into the samples. The photoluminescence excitation and emission spectra were both broad bands. The dominanted emission band centre located at about 444 nm which was the blue emission of the transition of 4f
6
5d→4f
7
. The luminescence intensity of blue phosphors CaAl
2
O
4
∶3.5%Eu
2+
3%Gd
3+
is the best among all samples.
高温固相法发光材料CaAl2O4∶Eu2+Gd3+
high-temperature solid-phase methodluminescent materialsCaAl2O4∶Eu2+Gd3+
Wang L S, Li M, Lai H S, et al. Synthesis and characterization of SrAl2O4∶Eu2+,Dy3+ long afterglow luminescence materials by spray pyrolysis process [J]. Chin. J. Lumin.(发光学报), 2011, 32(8):766-772 (in Chinese).
Hao H C, Chen B, Zhu J, et al. Long-persistent luminescence properties of SrAl2O4∶Eu2+,Dy3+ doped with Yb3+ and Er3+ [J]. Chin. J. Lumin.(发光学报), 2011, 32(4):319-324 (in Chinese).
Yang Q, Liu Y L, Sha L, et al. Surface treatment of SrAl2O4∶Eu2+,Dy3+ phosphors by combustion method [J]. Chin. J. Lumin.(发光学报), 2011, 32(9):864-868 (in Chinese).
Mu Z F, Hu Y H, Wang Y H, et al. The structure and luminescence properties of long afterglow phosphor Y3-xMnxAl5-xSixO12 [J]. J. Lumin., 2011, 131(4):676-681.
Feng W L, Zhao M F, Xue J Y, et al. Photoluminescence properties of (Ba1-xEux)WO4 red synthesized by the coprecipitation/calcination method [J]. J. Alloys Compd., 2012, 521:146-149.
Li X J, Liang Y J, Yang F, et al. Effect of fluxes on morphology and luminescent properties of Ba2SiO4∶Eu2+ green phosphor [J]. Chin. J. Lumin.(发光学报), 2012, 33(8):808-811 (in Chinese).
Yang X X, Lv S C, Qu X R, et al. Hydrothermal preparation of BaWO4∶Eu3+ red phosphor and its luminescent properties [J]. Chin. J. Lumin.(发光学报), 2012, 33(8):851-856 (in Chinese).
Yang Y L, Li X M, Feng W L, et al. Effect of surfactants on morphology and luminescent properties of CaMoO4∶Eu3+ red phosphors [J]. J. Alloys Compd., 2011, 509(3):845-848.
Ji T K, Jiang H Y. Thermal stability of red afterglow phosphor Y2O2S∶Eu,Mg,Ti,Gd [J]. Chin. J. Lumin.(发光学报), 2011, 32(2):122-126 (in Chinese).
Zhou X M, Zeng H H. Synthesis and characterization of new long lasting red phosphors Y2O2S∶Eu,Si,M(M=Mg, Ca, Sr, Ba) [J]. Chin. J. Lumin.(发光学报), 2010, 31(1):59-63 (in Chinese).
Wang R Q. Effects of excitation wavelength and the Eu2+-doped content on phosphorescence of Sr4Al14O25∶Eu2+,Dy3+[J]. Chin. J. Lumin.(发光学报), 2010, 31(5):686-690 (in Chinese).
Yang Y G, Yuan X M, Wang Y Q, et al. Preparation and research of nano-scale blue-emitting phosphor CaAl2O4∶Eu2+[J]. Chin. J. Liq. Crys. Disp.(液晶与显示), 2005, 20(3):220-224 (in Chinese).
Yang Z P, Wang W J, Guo Z, et al. Effect of Sr2+ doping on distribution of traps and characteristic of afterglow for CaAl2O4∶Eu2+,Nd3+,La3+ [J]. J. Chin. Ceram. Soc.(硅酸盐学报), 2004, 32(2):118-121 (in Chinese).
Weast R C. CRC Handbook of Chemistry and Physics [M]. Boca Raton: CRC Press, 1989:F-187.
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