稀土长余辉发光材料SrAl2O4∶Eu2+, Dy3+的制备及性能研究

王红梅; 庞明; 张继红; 王永钱; 胡小华; 杨应国; 袁曦明

稀土长余辉发光材料SrAl₂O₄∶Eu²⁺, Dy³⁺的制备及性能研究

中国地质大学纳米科技中心, 湖北武汉 430074

基金项目:

湖北省科技攻关计划重大项目 2001AA102A03

详细信息

作者简介:
王红梅(1977-), 女, 在读硕士研究生, 研究方向为稀土发光材料

中图分类号: TQ050.4
计量
- 文章访问数: 3675
- HTML全文浏览量: 336
- PDF下载量: 10
- 被引次数: 0
出版历程
- 收稿日期: 2002-06-15
- 刊出日期: 2004-01-25

Study on Preparation of Rare Earth Metal Long Phosphorescence and Its Properties

Nanotech nology Center, China University of Geosciences, Wuhan 430074, China

摘要

摘要: 采用溶胶-凝胶法在低温、还原气氛下制备了长余辉发光材料SrAl₂O₄∶Eu²⁺, Dy³⁺.用X射线粉晶衍射对其进行了物相鉴定, 表明在10 5 0℃已经得到纯相的SrAl₂O₄产物, 115 0~ 14 0 0℃物相没有改变, 仍是SrAl₂O₄相.研究了灼烧工艺、铕和锶的比值、硼酸的加入量、激活剂铕和镝的比值、基质元素铝和锶的比值等条件对SrAl₂O₄∶Eu²⁺, Dy³⁺长余辉发光材料的相对发光强度的影响.结果表明: 采用H₂作还原气氛, 灼烧温度为12 0 0℃, 恒温2h, 然后随炉自然降温的生产工艺, 可制备出发光性能优良的长余辉发光材料.
- 溶胶-凝胶法 /
- 稀土 /
- 长余辉发光 /
- 发光性能
Abstract: Sol-gel synthesis technique (SST) has been used to prepare SrAl₂O₄∶Eu²⁺, Dy³⁺. The XRD shows that the production prepared at 1 050 ℃ is pure-phase SrAl₂O₄∶Eu²⁺, Dy³⁺, and the phase will not change subjected to the temperature of 1 150 ℃-1 400 ℃. Effects of such factors as the temperature in the sintering process, different proportions of Eu/Sr, different additions of boracic acid, different proportions of Eu/Dy and different proportions of Al/Sr on the relative luminescent height have been studied. The research shows that under the condition of taking hydrogen as reductant, taking 1 200 ℃ as sintering temperature, keeping constant temperature for 2 hours and naturally lowering the temperature, high-quality phosphor products can be produced.
- sol-gel /
- rare-earth /
- long afterglow material /
- luminescent properties

HTML全文

图 1 不同温度烧结后所得发光体的粉晶衍射图

Fig. 1. XRD patterns of phosphors sintered at different temperatures

下载: 全尺寸图片幻灯片

图 2 SrAl₂O₄∶Eu²⁺, Dy³⁺的发射光谱

Fig. 2. Emission spectra of SrAl₂O₄∶Eu²⁺, Dy³⁺

下载: 全尺寸图片幻灯片

图 3 烧结温度对相对发光强度的影响

Fig. 3. Effect of temperature of sintering on relative luminescent intensity

下载: 全尺寸图片幻灯片

图 4 SrAl₂O₄∶Eu²⁺, Dy³⁺的发射光谱

Fig. 4. Emission spectra of SrAl₂O₄∶Eu²⁺, Dy³⁺

下载: 全尺寸图片幻灯片

图 5 Eu/Sr对相对荧光强度的影响

Fig. 5. Effect of proportion of Eu/Sr on relative luminescent intensity

下载: 全尺寸图片幻灯片

图 6 SrAl₂O₄∶Eu²⁺, Dy³⁺的发射光谱

Fig. 6. Emission spectra of SrAl₂O₄∶Eu²⁺, Dy³⁺

下载: 全尺寸图片幻灯片

图 7 硼酸加入量对相对发光强度的影响

Fig. 7. Effect of addition of boracic acid on relative luminescent intensity

下载: 全尺寸图片幻灯片

图 8 SrAl₂O₄∶Eu²⁺, Dy³⁺的发射光谱

Fig. 8. Emission spectra of SrAl₂O₄∶Eu²⁺, Dy³⁺

下载: 全尺寸图片幻灯片

图 9 Eu/Dy对相对发光强度的影响

Fig. 9. Effect of proportion of Eu/Dy on relative luminescent intensity

下载: 全尺寸图片幻灯片

参考文献(15)

Hoogenstraaten, W., 1958. Electron traps in zinc-sulfide phosphors. Philips Res. Repts. , 13: 515- 693. http://www.researchgate.net/publication/284885858_Electron_traps_in_zinc_sulphide_phosphors
Li, G.D., 1990. A kind of long persistence luminescent phosphors. CN 1039259A(in Chinese).
Lin, Y.H., Tang, Z.L., Zhang, Z.T., et al., 2001. Influence of different additives on luminescent properties of Sr₄Al₁₄O₂₅ : Eu, Dy phosphor materials. Journal of the Chinese Ceramic Society, 29(3): 218- 220(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-GXYB200103004.htm
Ma, X.F., 2000. Development and application of rare-earth long afterglow phosphors and their improvement techniques. Chinese Journal of Rare Metals, 24(4): 305- 308(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZXJS200004017.htm
Matsuza, W.T., Aoki, Y., Takeuchi, N., et al., 1996. A new long phosphorescent phosphor with high brightness, SrAl₂O₄: Eu²⁺, Dy³⁺. J. Electron Chem. Soc. , 143(8): 2670- 2673. doi: 10.1149/1.1837067
Randall, J.T., Wilkins, M.H.F., 1945. Phosphorescence and electron traps. Proc. R. Soc. London Ser., A, 184: 366- 407. http://www.socolar.com/Article/Index?aid=100019404799&jid=100000010036
Takasaki, H., Tanabe, S., Hanada, T., 1996. Long-lasting afterglow characteristics of Eu, Dy codoped SrO-Al₂O₃ phosphor. J. Ceram. Soc. Japn. , 104: 322- 326. doi: 10.2109/jcersj.104.322
Wang, X.X., Lin, Y.H., Zhang, Z.T., 2002. Eu and Dy cocoped Sr₂MgSi₂O₇-based long afterglow photo luminescent materials. Journal ofthe Chinese Ceramic Society, 30(2): 216- 219(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-GXYB200202015.htm
Yamamoto, H., Matsuza, W.T., 1997. Mechanism of long phosphorescence of SrAl₂O₄∶ Eu²⁺, Dy³⁺ and CaAl₂O₄∶ Eu²⁺, Nd³⁺. J. Lumin. , 72- 74: 287- 289. doi: 10.1016/S0022-2313(97)00012-4
Yuan, X.M., Xu, Y.S., Yu, J.B., et al., 2002. Sol-gel synthesis used to prepare nano fluorescent powder Y₄Al₂O₉: Eu³⁺. Earth Science— Journal of China University of Geosciences, 27(4): 409- 412(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQKX200204011.htm
李光大, 1990. 一种夜光粉. CN 1039259A.
林元华, 唐子龙, 张中太, 等, 2001. 不同添加剂对Sr₄Al₁₄O₂₅∶ Eu, Dy长余辉光致发光性能的影响. 硅酸盐学报, 29(3): 218- 220. doi: 10.3321/j.issn:0454-5648.2001.03.005
马秀芳, 2000. 稀土长余辉发光材料的开发应用与改性处理. 稀有金属, 24(4): 305- 308. doi: 10.3969/j.issn.0258-7076.2000.04.016
王晓欣, 林元华, 张中太, 2002. Eu, Dy共添加的Sr₂MgSi₂O₇基长余辉发光材料. 硅酸盐学报, 30(2): 216- 219. doi: 10.3321/j.issn:0454-5648.2002.02.016
袁曦明, 许永胜, 于江波, 等, 2002. 溶胶-凝胶法制备纳米荧光粉Y₄Al₂O₉∶ Eu³⁺的初步研究. 地球科学——中国地质大学学报, 27(4): 409- 412. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200204011.htm